A van’s water system is simpler than the electrical side: a pump, tanks, sink, some PEX. And it’s well worth the build, because running water (and optionally a hot shower) draws the line between “van camping” and “van life“! We’ve now built two vans:
FarOutVan 1
Super simple yet very functional
- Single fresh tank (interior)
- Portable grey tank (undersink)
- Sink (no hot water)
- Exterior hot shower (propane)
FarOutVan 2
All the amenities
- Dual fresh tanks (interior & exterior)
- Dual grey tanks (portable & exterior)
- Sink (with hot water)
- Interior hidden hot shower
- Electrical + coolant-fed water heater
This guide covers the design fundamentals that apply to both vans. The full installation walkthroughs live in the FarOutVan 1 Installation (bottom of this page) and our FarOutVan 2 water installation. Let’s build stuff!
Water System In A Nutshell
Main Components
Fresh Tank
Stores clean, potable water used for drinking, cooking, showering, and washing.
Fresh tanks are typically installed:
- Inside the van, in the garage: large tank (15-35 gallons), less subject to freeze than outside.
- Inside the van, below the sink: small portable water jugs – can be filled almost anywhere, but more often, are less subject to freezing than outside.
- Outside the van, under the floor: often installed in lieu of the spare tire – subject to freezing.
Grey Tank
Collects relatively clean wastewater from the sinks and shower.
Typical grey tank installation:
- Small portable water jug under the sink: easy to empty, but more frequently – less subject to freezing than outside.
- Outside the van, under the floor: large tank more subject to freezing.
Black Tank
Exclusively for toilet waste. It contains human waste and toilet paper, requiring specific chemical treatments.
We personally avoid black tanks in our vans, because we prefer to use composting toilets.
Water Pump
Maintain pressure in the system at all times.
We like to use a diaphragm water pump, because it’s pressure-activated; there is no ON/OFF switch. When the pressure drops (a faucet is opened), the pump senses it and starts pumping to restore pressure, continuing until the full pressure is restored. From a user perspective, it’s exactly like using water in a house.
Accumulator
(optional)
Creates a pressure buffer, thus reducing the pump’s cycling and pulsation.
An accumulator is optional with most modern diaphragm pumps, but we much prefer to use one because of the reduced cycling and pulsation.
Water Heater
(optional)
… heats… water… You guessed it!
In FarOutVan 1, we kept it simple with an instant-hot shower system outside, in the back of the van. Our sink didn’t have hot water at the faucet, so we heated water with a kettle on the stove. Simple, and we lived full-time like that for four years.
In FarOutVan 2 we have a “central” water heater, and each appliance is connected to it.
Simple Water System
FarOutVan 1
Diagram
(Click on the components to learn more)
Items List
| Component | Description | Quantity | Buy Link |
|---|---|---|---|
| MAIN | |||
| Fresh Water Tank | 25 Gallons | 1 | Amazon |
| Test Plug | To plug the fill hole of the water tank | 1 | Amazon |
| Water Tank Filler with valve | To fill the water tank | 1 | Amazon |
| Fitting: 1/2″ MPT to 3/8″ Barb | To install the vent hose | 1 | Amazon |
| Hose: 3/8″ I.D. clear | That’s the vent hose | 1 | Amazon |
| Fitting: 1/2″ MPT to 1/2″ PEX | To install the drain valve | 1 | Amazon |
| Valve: 1/2″ PEX | To drain the fresh water tank | 1 | Amazon |
| Fitting: Shurflo 1/2″ MPT to 1/2″ Hose Barb | To install the vinyl tubing for the drain | 1 | Amazon |
| Tubing: 1/2″ Braided Vinyl Clear | Flexible drain that can be folded away | 1 | Amazon |
| Shurflo Water Pump | Diaphragm Pump, 3 gallons per minute, 55 PSI | 1 | Amazon |
| Shurflo Accumulator | To reduce cycling | 1 | Amazon |
| Shurflo Strainer | Prevent damaging the pump if crap enters the system… | 1 | Amazon |
| Elbow Adapter | 90° angle to connect Silencer Kit (as needed) | 1 | Amazon |
| Shurflo Silencer Kit | Reduce noise from pump vibration | 1 | Amazon |
| ON/OFF switch | “Emergency” water pump switch | 1 | Amazon |
| Fitting, “Tee”: 1/2″ PEX to 1/2″ PEX to 1/2″ PEX | To split the PEX pipe for sink & shower | 1 | Amazon |
| Valve: 1/2″ PEX | We turn this valve off in winter and drain to prevent freezing (we don’t use the shower or bike wash in winter) | 1 | Amazon |
| SINK AND GREY WATER | |||
| Dometic VA7306AC Sink | Dometic sink not sold anymore; here’s an alternative | Tecvan | |
| Swivel Fitting: 1/2″ FPT to 1/2″ PEX | To connect the PEX pipe to the sink | 1 | Amazon |
| End Cap: 1/2″ FPT | To cap the unused hot water sink fitting (essential!) | 1 | Amazon |
| Drain | The sink does not include the drain, so make sure to order this! | 1 | Amazon |
| Camco Flexible Drain | 1 | Amazon | |
| Wye & Valves | To direct grey water into aqua-tainer or through-floor | 1 | Amazon |
| Quick-Connect | To easily detach the aqua-tainer for dumping | 1 | Amazon |
| Garden Hose | 1 | Amazon | |
| Hose Clamps, Worm-type | To ensure the garden hose doesn’t slip out of the aqua-tainer | 1 | Amazon |
| Aqua-Tainer | 4 gallons grey water tank | 1 | Amazon |
| SHOWER | |||
| EccoTemp L5 | On-demand propane shower | 1 | Amazon |
| Swivel Elbow Fitting: 1/2″ FPT to 1/2″ PEX | To install the water valve | 1 | Amazon |
| Valve: 1/2″ PEX | Water Valve | 1 | Amazon |
| Valve: 1/2″ FPT to 3/8″ Flare | Propane Valve. See our Propane System article for more. | 1 | |
| BIKE WASH | |||
| Spray Faucet with coil hose | 1 | Amazon | |
| Swivel Fitting: 1/2″ FPT to 1/2″ PEX | To connect the PEX pipe | 1 | Amazon |
| End Cap: 1/2″ FPT | To cap the unused hot water sink fitting (essential!) | 1 | Amazon |
| OTHERS | |||
| Fitting, “Tee”: 1/2″ PEX | This is required if, like us, installing both the shower & the bike wash | 1 | Amazon |
| Fitting, Elbow: 1/2″ PEX | The PEX pipe can bend 5″ radius max. For tighter turns, use this elbow. | As Required | Amazon |
| Bend Support | This has less restriction than an elbow | As Required | Amazon |
| PEX Tubing, 1/2″ | a.k.a. pipe, hose… | As Required | Amazon |
| Fitting, MISC | We can’t possibly list all the fittings you might need for your installation! Here is the complete SharkBite catalog. | SharkBite Catalog | |
| PEX Cutter | PEX tubing can be cut with a carpenter’s knife, but this tool will make your life easier | 1 | Amazon |
Complete Water System
FarOutVan 2
(Currently in construction)
Diagram
(Click on the circles to learn more)
Fresh Water Tank
Fill Port
Gravity Fill
Typically, fresh tanks in vans are unpressurized, meaning they are designed to store water but not hold pressure (e.g. pressurized city inlet). Therefore, gravity fill is recommended.
FarOutVan 1’s fresh tank is gravity-filled, and it couldn’t be simpler. We don’t want our van to look like an RV, so we didn’t install an exterior fill port.
We simply insert the hose in the fill port, and flow can be shut off with the Camco Shutoff Valve Add-On:
The fill port is closed using this test plug:
We carry a 50 feet hose (lead free and BPA free) to fill our fresh water tank. If we had to start over, we might consider carrying two 25 feet hoses, because 25 feet is what we need 95% of the time and using a longer hose slows down the process (more length adds flow restriction). So for the rare cases when we need over 25 feet, we could connect the two hoses together…
A gravity fill hatch inlet can also be install to “relocate” the fill port:
Pressure Fill
Pressure fill is typically the “city water inlet” found on RVs. Once the tank is full, pressure will build inside the tank (assuming the overflow port don’t allow as much water OUT as water IN).
FarOutVan 2 utilizes the Aquor RV City Water Inlet. Theses inlets are popular with a reason: they feature a quick-connect with valve that’s super easy to use. To minimize pressure buildup in the fresh tank, we used 3/4″ PEX tubing.
For FarOutVan 2, we found the neat Zero-G hose which is WAY more compact than FarOutVan 1’s Camco hose. We carry a 25-ft hose on the Rear Door MOLLE Panels for quick access (attached with a 3D Printed Holder for Zero-G Hose that we designed), and we have another 25-ft hose in the water cabinet in case we need 50-ft:
Water Pump Port
The outlet that feeds your water pump. It’s usually on the front or back of the tank, at the bottom edge.
Most tanks have 1/2″ NPT female outlet ports, so a 1/2″ NPT male fitting is required (check with your brand/model to make sure).
Drain Port
The outlet used to empty your tank (between trips, winterizing, etc.). It’s usually larger than the other ports, to allow more flow.
Vent Port
When pumping water out of the tank, or filling it, the water volume removed or taken in must be replaced with air. That’s the role of the vent port. To prevent water from coming out of the vent port (when braking or on steep or rough roads, for example), we connected a hose to the vent port and installed it about 15 inches above the tank.
The tanks we recommend (see “Water Tank Links” table above) have 1/2″ NPT female vent ports (so a 1/2″ NPT male fitting is required).
See section 1.3.1 for picture.
What Size?
It totally depends on your usage and how many days of autonomy (without having to fill) you want. As a rough guideline and to help you make your calculations, here is our usage living full-time in the van:
- One shower (one person) uses a little less than 3 gallons of water (that’s being very careful not wasting water, i.e. turning shower off when soaping, etc.).
- We dump between 2-4 gallons of grey water from the sink every day (we cook a lot, so we wash a lot of dishes; you might dump less than that).
That being said, we fill our 25 gallon tank every 4-5 days in summer (depending on showers). Every 7-10 days in winter (we shower in aquatic centers or gyms and try to fill our 1L water bottles as often as we can in public places).
When choosing the size of your tank, remember that water is not a luxury, it’s essential! Having to search for water frequently is no fun, so make sure to select a tank that gives you plenty of autonomy!
Inside or Outside the Van?
By installing our tank and plumbing inside the van, we can use our system even during skiing season, nice! We tested it in temperatures as low as -24F (-31°C). Of course, having the tank inside occupies precious space in the garage, but that’s a compromise we are happy to make.
If we were to use the van exclusively in summer, we might consider installing our tank outside the van, underfloor. Installing the tank underfloor frees garage space AND improves the van handling because it lowers the center of gravity.
If we were to start over, now that we know that we use much less water in winter, we would consider installing a tank inside the van AND a tank outside the van. The idea is to maximize water capacity without occupying too much space in the garage:
- In summer, we would use both tanks (extra capacity for showers).
- In winter, we would winterize the outside tank and use only the inside tank.
- Remember, this extra precaution is because we use the van below freezing temperatures! If that’s not your case, there’s probably no point in doing this.
- That’s food for thought, we don’t have any installation layout/details for that…
More water tanks here:
Wheel Well & Spare Tire Tanks
Wheel well & spare tire water tanks are a thing now, and we wish that option existed when we built FarOutVan 1! Actually, we ARE currently building FarOutVan 2 and installing a wheel well tank and a spare tire tank!
Space Optimization
Decrease the waste of space, increase the living/storage space. That’s the name of the game when building a van!
Lower Center of Gravity
The fresh water tank carries a significant weight; lowering the center of gravity will improve the handling of the van.
Simpler Installation
No need to build a raised shelf to clear the wheel well.
Models
There’s also has a few other van-specific interesting options:
Ford Transit
Sprinter
ProMaster
Grey Water Tank
Portable Interior Tank – FarOutVan 1 & 2
Pros
- Portable = Easy to dump
- Interior = less subject to freezing
- Simple installation
Cons
- Small-ish = Dump more frequently
- Collect water from sink only
- Occupy storage space
1. Aqua-Tainer
We use 4 gallon Aqua-Tainer, but 7 gallon works too.
2. Aqua-Tainer x Garden Hose Adapter
Aqua-Tainer threads are proprietary, no existing fitting will fit. So we designed and 3D printed our own! Buy in our Store.
3. Garden Hose Quick-Connect
4. Camco Sink Drain
Easy flexible sink drain. Buy on Amazon.
5. 2-Way Valve (optional)
To divert water into the grey tank, or through the floor. Buy on Amazon.
6. Garden Hose
Through-floor drain. Buy on Amazon.
Permanent Exterior Tank – FarOutVan 2
Pros
- Large = Dump less frequently
- Collect water from sink + shower
Cons
- Exterior = subject to freezing
- Complex installation
The underfloor grey water tank installation is documented here:
What Size?
That depends on how often you don’t mind having to empty it. As a guideline, we empty our 4 gallon grey water tank almost every day:
- Washing dishes is what uses the most water. We cook a lot, so we wash a lot of dishes! You might get less grey water than we do.
- If we use our hole-in-the-floor, we don’t have to empty our grey water tank every day…
Inside or Outside?
Because we use the van for skiing in winter, we had to install our grey water tank inside the van so it doesn’t freeze. It uses some space under the sink, but we’re happy that we can use our sink during winter!
The lowest temperature we have experienced so far is -31°C (-24F), and we could still use the water system! 🙂
Black Water Tank
We don’t have a black water tank and we don’t need to search for RV Dump Stations. Neat! How is that? Because we installed a Nature’s Head composting toilet. And we’re SO GLAD we did! We talk about our composting toilet here (how it works, how it’s emptied, what frequency, etc.):
Water Pump
Diaphragm Pump
A diaphragm pump keeps the water system pressurized at all times. It means having running water just like at home in a house.
The pump has no on/off switch. It starts automatically when the pressure drops, and it shuts-off automatically when the appropriate pressure is reached. For example, using the sink (or shower, or whatever) creates a pressure drop; the pump senses it and runs until the pressure goes up again.
One of the most common and reliable diaphragm pumps out there is made by Shurflo:
Shurflo Revolution 4008
- Shut-Off Pressure: 55 PSI
- Re-Start Pressure: 40 PSI
- Recommended Fuse: 10 amps
- Flow: 3 Gallons Per Minute
5.1.1- Connecting The Pump
The Shurflo Revolution 4008 has one 1/2″ NPS male inlet and one 1/2″ NPS male outlet. Because the pump produces quite a lot of vibration, it’s better to connect the pump using flexible pipes. We recommend using the Silencer Kit from Shurflo:
It’s also a good idea to install a strainer at the inlet port of the pump, so debris can’t find its way through the pump and damage it:
We connected the silencer to the strainer with this fitting (to save some space):
5.1.1- Electrical Wiring
By now, we understand that a diaphragm pump doesn’t require an ON/OFF switch… However, we recommend adding one to manually shut the pump off. It’ll prevent the pump from running indefinitely when the fresh water tank runs empty (it’ll happen!).
The pump has to be connected to the electrical system. Don’t worry, we also have a guide for that 🙂
Manual Pump
To keep things really simple and to save on electricity, a manual pump can be installed:
Hand Pump
Foot Pump
Accumulator
If installing a diaphragm pump (like the Shurflo we recommend), you might consider adding an accumulator. The accumulator contributes to longer pump life, less noise, less amperage draw, and reduced water pulsation. It also reduces cycling (the pump starts less often), nice.
Per manufacturer: “The most efficient use of the accumulator occurs with the accumulator pressure set at the same pressure as the pump’s re-start setting.” (Hint: it’s 40 PSI for the Shurflo Revolution 4008 pump). We tested different pressures, and we prefer to set it to 30 PSI as the water volume capacity is greater at that pressure (therefore, the pump cycles less).
The pressure can be checked with a normal tire gauge (you have one in your glove compartment, right?) and adjusted with a bike pump (it’s a schrader valve), it’s super easy. When checking or adjusting pressure, just remember to turn off the pump and to open the sink faucet (this is to read the static pressure). The accumulator comes unpressurized.
Shurflo Accumulator
Sink
For Pressurized System
Pretty much any sink will do. We have the Dometic VA7306AC sink in FarOutVan 1 because it’s compact, foldable and looks great. If your counter space is limited, it’s a great way to optimize it. The only downside we found is that the foldable faucet is in the way when washing/rinsing large items (such as full size plates or pot/pan); we wish it was located further back so we didn’t have to swing it around.
Edit: Looks like the Dometic sink we used is no longer sold. We installed the TecVan sink in FarOutVan 2:
Tec Vanlife
A newer option that recently caught our attention! It looks super classy, functional, and also convert as a shower head!
- 52″ extra-long pull-out head (see demo in video).
- Made from 3mm stainless steel coated with a thick layer of oil-free nanotechnology coating resistant to staining.
- Removable cover (can be used as a cutting board!).
- Cold & hot water fittings: 1/2″ NPT.
- Drain size: 1-1/2″ fitting (strainer not included).
- Exterior dimensions: 450mm x 390mm (17.72″ x 15.35″).
- Interior dimensions: 380mm x 347mm (14.96″ x 13.66″).
- Cutout: 420mm x 360mm (16.54″ x 14.2″).
- Depth: 230mm (9″)
For Manual Pump
If going for a manual pump, keep things simple!
Spout
Sink
Hot Water
Nope
We don’t have hot water in the sink in FarOutVan 1, and we’re OK with it: we just use our kettle to heat water. That’s the most economical way (water and gas) for sure! The most annoying part is that it’s not really practical to rinse the dishes with the kettle, so we rinse them with cold water, which makes drying the dishes more difficult. For everything else, we don’t mind.
Kettle With Thermometer
Electric
The Bosch Mini Tank Water Heater is quite popular in vans. It comes in 2.5-gallon, 4-gallon, or 7-gallon tank capacity, is plugged to a 120V AC outlet, and is rated for 1,440W.
Pros:
- Easy to install
- Affordable
Cons:
- Not designed for a mobile application (could get damaged by vibration)
- No drain valve (winterization)
- 1,440W heats fast, but can overload your electrical branch if used simultaneously with another 120V appliance.
Electric & Coolant (Hybrid)
The Isotemp Spa (by Indel Webasto) is a fantastic option. It comes in 4-gallon, 5.3-gallon, 6.5-gallon. It works on 120V AC (750W), or from the vehicle coolant (VERY efficient), or both.
Pros:
- Easy to install (electric only)
- Designed for mobile applications (vibration, very robust)
- Features a drain valve (easy to winterize)
- Excellent tank insulation (will stay hot without heat source for a long time)
- If connected to the vehicle coolant, VERY energy efficient (“free” heat while driving)
- 750W-rated = won’t overload the electric branch (can be used simultaneously with other appliances).
Cons:
- Higher cost upfront
- More complex installation if connected to the vehicle’s coolant.
Propane
Tankless (On-Demand)
As the name suggests, a tankless water heater has no tank. Water is heated instantly on-demand, so it can provide a continuous flow of hot water. It’s super-efficient since it doesn’t have to keep water hot all day.
This is what we used for the first 10 months in our van. But then we realized we don’t need to have a portable system. It is quite bulky and cannot be integrated to our water system. So we decided to try something else…
We’ve been using the Eccotemp since 2018 and we’re super happy with it. It’s good, cheap, and easy to install. It can be integrated into a pressurized system, it’s not bulky, and the water is surprisingly HOT.
With Tank
Atwood has a wide range of water heater models, but the one that catches our attention is the G8A-6E model:
- Tank Capacity: 6 gallons
- Water Temperature: 100F to 150F
- Energy: Propane
- Recovery: 11.6 gallons per hour
- Dimensions: 16″ high x 12.5″ wide x 18″ deep
Make sure to check Atwood’s website for all their available models: http://www.atwoodmobile.com/water-heaters.asp
Atwood 6 Gallon Water Heater
Diesel
If budget is not an issue, you might consider the Webasto Dual Top Evo. It’s an air heater (similar to our Webasto air heater installation) AND water heater combined. It works with diesel and has an 11 liter water tank integrated. Fun fact: it’s over $7K…
Webasto Dual Top Evo
Bike Wash
FarOutVan 1
Washing a bike uses quite a lot of water, so we obviously don’t use it very frequently. But there are some occasions where the bike wash is a real life saver; removing a layer of mud from the down tube by hand is no fun!
Now, can someone explain why Antoine is CONSTANTLY walking in dog poo while Isabelle is not??! We’re thinking of renaming it the “Dog Poop Wash” as it has become the primary use…
Exterior Spray Faucet
Inlet, Outlet, Mixing Valve
FarOutVan 2
Like many of you, we used Aquor inlets/outlets and mixing valve to the back of the van:
Bike wash, exterior shower, and fresh tank fill: Aquor RV City Inlet. Mixing valve = Aquor Mixing Valve.
https://faroutride.com/water-cabinet/Under the hood (FarOutVan 2’s Water Cabinet):
Pipes & Fittings
Pipes
Let’s get straight to the point, PEX tubing is what you want.
- PEX tubing has become the standard for houses and RVs.
- It’s cheap and readily available in any hardware or RV store.
- It comes in red/blue color to differentiate hot/cold side (both colors have the same properties).
- It resists freezing (but fittings might crack, don’t let it freeze!) and high-temperature.
- It’s easy to cut, easy to connect, and easy to route (flexibility: 5″ minimum radius for 1/2″ diameter PEX).
- It won’t corrode.
- Note that PEX is NOT UV resistant and should not be installed under constant sun exposure.
PEX Tubing
PEX tubing can be cut with a carpenter’s knife, but a PEX cutter will make your life easier:
PEX Cutter
Fittings
10.2.1- Clamping
This is the method we recommend for permanent, leak-free connections. It’s easy, fast, fun (yep!) and there is very little chance for error. It’s also good to know that a clamp tool can clamp any ring size (as opposed to crimp). Here is how it goes:
- Insert the clamp ring on the outside of the PEX tubing.
- Insert the barbed fitting into the PEX tubing.
- Using the Clamp Tool, compress the clamp ring. The clamp tool will not release from the clamp ring unless a properly-secured connection has been made; therefore, a GO/NO-GO gauge is not required!
PEX Clamp Tool
For 3/8″ up to 1″ rings
PEX Clamp Rings
1/2″
10.2.2- Crimping
Crimping is very similar to Clamping; a crimp ring is used instead of a clamp ring. Both methods give equally good results, except a GO/NO-GO gauge has to be used for crimping to ensure the crimp ring was sufficiently deformed. Crimping is the cheapest method for large projects.
PEX Crimp Tool
For 1/2″ rings
PEX Crimp Rings
1/2″
10.2.3- Compression Fittings
The disadvantage with clamp/crimp is that it might be impossible to operate the tool in tight spaces. In that case, you could use Flair-it compression fittings as they require no tool for installation. We personally haven’t tried them, but they’re quite popular in the RV industry. Flair-It fittings come in a variety of shapes and functions:
10.2.4- Push-To-Connect Fittings
Push-to-Connect fittings are almost too good to be true. Just push the PEX tubing into the fitting and voilà! …In fact, maybe they are indeed too good to be true. We tried them and when we pressurized the system, many fittings had slow leaks.
- Slow leaks are the worst because they’re hard to notice and could create damage in the long run… Why did we have a slow leak? The Sea Tech fittings rely on an O-ring that goes on the outside of the PEX tubing (not inside); the surface of the PEX tubing must be scratch and damage free. These fittings are “reusable”, but the action of disconnecting creates scratches on the outside surface of the tubing…
- O-Rings dry and lose efficiency in the long run.
- Some people reported having no issue at all after many years, but we think they are too sensitive to install, to outside tubing surface conditions and to O-ring deterioration. We’re not 100% confident, so we pass (we would be OK with them for temporary repair or outside installation).
10.2.5- Threaded Fittings
For all threaded plastic fittings:
- Do not use Teflon tape or Teflon paste! These are lubricant, not sealant, designed for metal fittings and they will promote over-tightening of plastic fittings = cracks = leaks.
- Don’t over-tighten: finger tighten plus one or two turns.
- Use non-hardening, plastic-safe, non-toxic thread sealant (not lubricant). It’s a paste that does not dry and can be removed easily (not permanent).
- We did not use thread sealant on the Shurflo fittings attached to Shurflo appliances (pump & accumulator).
Thread Sealant
Compatible with plastic fittings (PVC, CPVC, ABS, Nylon). Non-toxic (OK for potable water). Non-hardening. See product info (pdf).
Winter
To Winterize
When water turns from liquid into ice, its volume expands by approximately 9%; as a result, any water trapped into a component that freezes will crack said component.
In an RV, it is almost impossible to completely drain the water from everything. The best way to achieve this would be to use an air compressor to blow out the system, but it’s not guaranteed to work… That’s why most people winterize their water system with antifreeze.
Our water system, however, is quite simple; there are few components, and these components are all accessible. So it can be winterized by draining all the water and without adding antifreeze. Empty the water tank completely and, with the pump activated, open each faucet independently (sink, hot shower, bike wash) for a rough “pre-drain”. Disconnect the water pump, the accumulator, the hot shower (Eccotemp), and the bike wash. Water will come out, so have a large bowl and some towels ready! If you can, take all these appliances inside your house for the winter (hey, the removal should only take a few minutes of your time it’s not that bad!). If removing them is not possible, blow out with compressed air to drain them well. Be extra careful with the hot shower (Eccotemp), it’s much harder to drain because of the heat exchanger (we’d really take this one inside the house for the winter..).
Or To Not Winterize
Since we usually live full-time in the van and all our components (pipes, water heater, fresh water tank, etc.) are located inside (warm-side), we can use our water system ALL-YEAR, sweet! We even used it when it was -24F (-30°C). We only take the precaution of winterizing the bike wash / shower at the back of the van; this area can freeze occasionally (it’s far from any heat source), so we avoid taking any risk and drain it.
Hacks
12.1- Water Bandit
To increase our chance of finding water while we’re on the road, we carry a neat Water Bandit. It can be fitted on almost any tap (thanks to the rubber side), then a hose can be connected to it (thanks to the “garden-hose-fitting”) on the other side. We’re using it occasionally.
12.2- Sillcock Key
Following this post, many of you recommended we get a Sillcock Key. Apparently, this tool can open water supplies at some rest areas, campgrounds, corner stores, etc. After a few years on the road, we actually only used it once, but we’re happy we had it!
Monitoring Tank Levels
Keep it simple!
For a majority of people, monitoring the level of the tanks just by looking through them does the job. That’s what we did for the first year or so we lived full time in our van; it worked just fine, and it’s the cheaper solution.
Simarine Pico
After a year or so living full time in our van, we decided to upgrade for a fancy monitoring system. The Simarine Pico is not only sexy, it is also packed with cool features: battery monitoring, tank level monitoring, temperature sensors, inclinometer, etc. We appreciate the tank level feature (fresh tank, grey tank & Nature’s Head liquid tank) and the low/high level alarm. It would be hard to go back after getting used to it…
How to sanitize the Water System
Because we live full time in our van, our water system is constantly refreshed (we fill our tank approximately every 4 days). Therefore, we sanitize our tank every six months. If you must leave your van alone for a week or two without draining the system, consider sanitizing before using it (especially in a hot climate!).
1- Prepare a bleach solution
- Use 1/4 cup of bleach for every 16 gallons of water in your fresh tank.
- Dilute the bleach in at least 1 gallon of water.
- Do NOT add the bleach in the tank without diluting it first!
2- Sanitize
- Add the bleach solution to the fresh tank and fill with potable water.
- Circulate water through the entire water system for about a minute (by opening the sink and other devices).
- Let it sit for at least 4 hours (overnight is better!)
3- Rinse
- Drain the fresh water tank and re-fill with potable water.
- Circulate fresh water through the entire water system for a few minutes.
- Repeat once more (drain, re-fill, circulate, drain).
- That’s it!
Installation – FarOutVan 1
Below is how we installed our water system in FarOutVan 1.
For FarOutVan 2: Water System Installation – FarOutVan 2
Tank Installation
The tank is installed above the wheel arch:
The tank is secured with BoatBuckle Kwik-Lok Tie Downs 2″x4′ (Buy on Amazon). They’re super strong and easy to install/remove. They are attached to Stainless Steel Tie-Down “D” Rings (Buy on Amazon):
When the tank is full, there is noticeable “bow” on the unsupported side of the tank; we therefore added a wood support to counterbalance the bow (the straps alone won’t help). Note that the wood support must go across the entire height of the tank (from bottom to top) to be effective (otherwise the strap will flex):
Water Pump, Accumulator & Plumbing Installation
Water pump & accumulator:
We built a “shield” for the pump and accumulator and installed the switch on it:
It looks like this with the “shield” on:
This is the tubing near the pump and the accumulator:
- Our tank has a water pump port at the rear; unfortunately this tank is not made anymore… The tanks we suggest have all ports on the same side.
- To save space, we used a Shurflo 90° elbow adapter fitting between the strainer and the silencer kit.
And this is the tubing where it splits toward the bike wash / shower:
Sink and Grey Water Tank Installation
The sink installation into the cabinet is covered in our Sink & Stove Cabinet article
This is our grey water tank:
Meanwhile in China:
Bike Wash Installation
Hot Shower Installation
To connect the cold water (blue PEX tubing), we used a swivel-elbow adapter followed by an elbow (per our water diagram); this way the valve (which acts as the shower handle) is easily accessible and is routed around the propane valve (see also following picture for a different view angle).
When not in use, the shower head is stored using a Quick Fist Clamp mini (Buy on Amazon):
The shower head temporary mounts in the window using a suction cup adapter (Buy on Amazon):
And that’s our exterior shower setup. We documented how we built our exterior shower
If you’d rather have an indoor setup, see our hidden shower with in-floor shower pan in Van #2.
On Second Thought…
- October 2017 : One month living full-time in the van! We talk about the water system in our “First Month on the Road” article
- December 2017: We modified our grey water system so we can dump water directly through the floor (or in the grey water tank).
- June 2018: We traded the Mr Heater BOSS for an EccoTemp (see justifications above in this article). We also re-plumbed our system using PEX tubing instead of braided vinyl tubing (because that’s the proper way to do it).
I have a question about securing the fresh and gray water tanks. You said you use a floating float and I plan to do the same. But I am concerned about the water tanks “jumping” when hitting bumps due to the large mass when filled with water. My fresh water tank will be above the wheel well and the gray water tank on the floor. How did you secure the tanks to prevent then jumping? Did you drill through the floor for an attachment point?
Hi! We secured our water tank with straps attached to the bed “leg” (as shown here: https://faroutride.com/platform-bed-installation/); it’s shown in the “installation” section: https://faroutride.com/water-system/#installation
CHeers!
I hope it’s ok to ask a question in the comment section. I noticed that in your parts list, the vent tube had a 3/8 connection involved. I was hoping to use a 1/2 inch OD 3/8 ID flexible tube for my vent tube) it fits in factory holes to exit the van. Is 3/8 ID enough for one of these systems? Did you use that? Any problems? Thanks for all you do
3/8 ID is what we have, no issues at all! 🙂
Thank you for a great and easily understood article, thinking the same as you … no hot water to the sink, the kettle is sufficient
Again, thank you
Barrington
Just wondering what you do for water filtration?
We don’t filter our water and it’s been fine 🙂
But I’ve seen many people use this inline filter: https://amzn.to/3O38W3H
Bonjour Isabelle et Antoine !!!
merci pour vos informations si généreusement diffusées!
J’ai suivi vos conseils relatifs au système d’eau. Il semble qu’Il n’y ait aucune référence à une prise d’air pour l’évacuation de l’eau de l’évier. À tout le moins, je ne l’ai pas trouvée.
Or, j’ai de la difficulté à éliminer l’eau de l’évier que je l’achemine directement à l’extérieur par le plancher ou dans le réservoir d’eau grise.
Bonne route à vous, merci et à un de ces 4 !
Effectivement nous n’avons pas de prise d’air pour l’évacuation de l’eau. L’évacuation se fait un peu plus lentement, mais pas assez pour que ça nous cause du soucis.
Hi guys,
“we usually live full-time in the van” and the water doesn’t freeze. Okay.
The design of your system puts some critical components deep in the garage, the coldest area of the van. In our van that area does occasionally gets close or below freezing, usually when the outside temp is below -10C and the inside temp is +10C, sleeping at night.
I was wondering what at temp you sleep at night in the winter and if you have had many close calls?
Cheers,
For a good night of sleep, we keep the “bedroom” temperature above 12C (54F) during the night. With that, we never got issues with components freezing.
Do you have a wall or something between your living area and your garage? If so, you might get more issue with the garage freezing (and moisture). Personally we have a curtain between our living area and the garage, so when it’s REALLY cold outside (like below -15C or such) we leave the curtain open, so there’s a better air circulation to the garage (keeps the garage a bit warmer).
Well, not a wall, but our refrig is where your closet is. There is a bit of an opening aside of the refrig, maybe 8 inches, going along the water tank. Plus, since I wrote that above, I am learning that our thermostat might be 2C cold, so then it might be more like 8C at night. So, we could turn up the heat a little. I should mention that our batteries, which are in a similar location to yours, get even colder, but at least they can’t freeze, and I I think they will allow charging down to -3 or -4C if we need.
One thing different about your garage is that there is more solid stuff in your, ours is not as organized what with everything flopping around on the floor. So you might have a bit of thermal mass back there to even temps out, and not our big volume of cold air which quickly gets cold.
Anyway, also since I last wrote, I tried an experiment, wedging a piece of foam over the piping at the back of the water tank, between the tank and the propane locker, which for us is about 4 or 5 inches. The idea is to trap some of the “heat” from the water tank to keep the piping above freezing, and that seems to have worked for two nights (-9 and -8 outside, +8 inside, and the water pipe temp only dropped to about +3 both nights, much improved). Now the temps are up again, so no more testing!
I will keep you updated, but the final test might not be until next year!!
It seems that drilling a new port on the _front_ of the tank might simplify and protect the whole system bettor.
Cheers, Don
PS, How is your new build going! Need an update!!
How would you connect a tank inside together with an outside tank?
I live in Hawaii. I have a 21 gallon spare tire from NW conversion and a 40 gallons from Amazon.
I could pump from under to above to fill in the upper tank again.
How would you design it. Happy to pay for your services.
Please be aware thar bleach can attack stainless steel. Better to use puriclean. Also fitting a drain point on the cold water system will avoid frost damage to pump, heater etc when not in use during freezing conditions. Great article otherwise with really helpful advise.
Hello,
I am getting ready to buy my water tanks and am finding that the rectangular tanks fit my build better than the wheelwell style. The wheelwell style are kind of naturally baffled to minimize water slosh because of their shape. Did you find the effect of slosh noticable with your 25gal tank? Thanks in advance!
We can hear it sometimes, but that’s the least of our concerns with all the road noise, dishes, music, etc. 😉
I wouldn’t worry about it!
I wasn’t so worried about the sound as the inertial force of the water on stopping/brakes that I’ve read about with large water tanks
Sounds like it’s a non-issue for you! Thanks for the reply.
Hi quick question!
Is the tank shown in the photos the same one as the one in the 25g water tank link?
I want the orientation of the tank to be as you have it but that would mean the fill port would have to be 1/2″ not the 1.5″ port. Unless the photos on Amazon are different than actual tank.
Thanks!
Sorry, our current water tank has been discontinued and is not available anymore on Amazon. The tank we link to has a different configuration.
Hello! Love this site, has been a godsend for my buildout. 2 quick questions for you:
1. how concerned were you with weight distribution between the passenger / driver side? The plan for my current set up will result in the driver side have the kitchen (fridge + stove), sink (+ 20gal freshwater tank), overhead storage, as well as a back dresser alongside the wall near the bed like yours. While the passenger side will have the electrical system, I worry that the driver side will have way more weight on it which may cause problems. Did you guys think about this / how seriously did it impact your decision making? (FYI I’m going to be way under the payload capacity for my van so no worries there)
2. One solution to this challenge is I could put the freshwater storage tank in the garage on the passenger side, and route the hose to the sink on the driver side by lining the bottom of my bed platform with the freshwater line. It seems odd to have a freshwater line of ~7-10 feet, but a good solution to the weight distribution challenge. Based on your experience, would a set up like this be possible (e.g., still hold water pressure)? Do you see any big issues in doing it that way?
Thanks a ton!!!!
Hello!
I have a quick question about the tank, I am not knowledgeable on this subject, so I’m confused about something. The tank that you provide an Amazon link to says the following on the specs:
“NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.”
But you guys say you do fill yours with a hose. In addition, in section 5.1 Diaphragm Pump – you say your system is pressurized at all times. Are you using the same 25 gal. tank that you provide a link to? If so, how are you able to use a hose to fill it? It’s probably something simple, forgive my ignorance on the subject, I just want to make sure I order the right thing and the tank doesn’t explode or leak when I fill it. I would be very grateful to hear your thoughts, so I can use your link to make a purchase. Thanks so much!!
In our system, the fresh water tank is NOT pressurized. The pressurized section is what comes AFTER the pump.
When we fill our tank, we simply insert the hose into the tank and fill it, in the same manner you would fill a bucket; this DOES NOT pressurize the tank.
Hope that makes sense!
antoine
Awesome! Thank you sooo much, that really helps!! 🙂
Hola thank you for the nice write up~
I am strongly considering installing 1/2” PEX plumbing with the steel clamping tool. Did you ever break a plastic/ polypropylene barbed connector while installing? This is my sole concern~
Thanks
Bruce
We didn’t broke any plastic connector, all good! 🙂
Thank you do much for posting all this info. Just finished roughing in my camper/sprinter and found your easy to follow diagrams so helpful. Can’t wait to start on the plumbing system.
We have a question about the accumulator. We have found that when changing altitude the accumulator seems to function differently, which makes sense. We first noticed that the pump was constantly on (but very low) when at altitude from sea level, since the pressure was probably higher than the pump could maintain. We were able to take some air out of it but then the fill valve broke so we ordered a new one. We were wondering if you ever change the accumulator pressure and if so how often you do. Thanks!
We never change the pressure, it works pretty good as it is at any elevation for us!
Hi,
Question for the silencer kit. I notice in the diagram it looks like you install the silencer directly around the strainer and accumulator, yet in your build photo you have a white elbow bend part installed before the silencer tubes. Do you have a name for that part? I’m trying to shop for it but don’t know the proper description. Your site has been a tremendous help for building our van. Thank you so much!
I believe that’s the fitting your referring to: https://amzn.to/3w0pnET
🙂
or this? https://www.amazon.com/SHURflo-244-3366-Elbow-Adapter-Fitting/dp/B002IZDM50/ref=sr_1_8?crid=321TQZ461Y1MI&keywords=shurflo+elbow+adapter+to+female&qid=1638138067&sprefix=shurflo+elbow+%2Caps%2C241&sr=8-8
Just a note – I wouldn’t recommend the Plasto-Joint Stik Plastic Thread Sealant. On the label it says “Non-Potable Water Applications Only”.
What is the adapter you’re using to connect the quick disconnect to the grey water tank? I purchased both recommended products and my quick disconnect seems to be a different thread count than the cap on the grey water tank so it won’t screw in nicely. Thanks!
I’m wondering this too. They didn’t mention it anywhere in the guide
We are having the same issue, did anyone figure out what thread this Reliance tank is or a workaround, driving us crazy! Thanks!
We simply fitted a garden hose through the spigot hole, then used a worm gear clamp to “hold it in place”. Not ideal, not fully sealed, but it did the job OK.
Today I revisited this topic (thanks to your comment). Turns out Aqua-Tainer has proprietary threads, NO OTHER FITTING will fit.
So I designed and 3D printed an adapter which has the proprietary threads on one side, and garden hose threads on the other side:
It works flawlessly (after many iterations…) and seals the deal! 🙂
I added it to our store: https://faroutride.com/product/reliance-adapter/
Hope this helps!
antoine
Have you had any problems with your splitter for the grey water ? Does it clog sometimes since the valves are small?
No problem with the splitter. We do have to clean the hoses about twice per year to keep them free of debris.
Can you link the hose that you use to fill your tank? Thanks!!
Excellent point! I added this to the page:
“We carry a 50 feet hose (lead free and BPA free) to fill our fresh water tank. If we had to start over, we might consider carrying two 25 feet hoses, because 25 feet is what we need 95% of the time and using a longer hose slows down the process (more length adds flow restriction). So for the rare cases when we need over 25 feet, we could connect the two hoses together… ”
Link to hose: https://amzn.to/3fTHaro