Fresh Water, The Build


If you haven’t already, take a look at our post about the 3 Types of Holding Tanks, or keep reading if you know about holding tanks. In this post, we will

Water Pump

The SHURflo 3.0 Revolution Water Pump looks like a solid pump. It’s 12v and uses 7amps, while that is a relatively high consumption, it’s not going to run anywhere close to a 24 hour draw; it may end up being 7amps daily. We will still need to account for the possibility of a higher amp draw in our battery bank calculations.

The SHURflo 3.0 uses 1/2” NPSM Male fittings; and uses an internal 55psi switch for “on-demand” pumping. If you turn on the shower, etc. and the water  pressure in the pipes drops below 25psi, the pump will start, the pump will maintain its output until the pipes pressure returns to 55psi, as in, when you turn off the shower. And of course they have some add-ons that we may be interested in.


Pipe Diameter

Fresh water lines will be a thinner diameter tube/pipe due to there being no need to pass solids through the lines. In theory, combined with a properly sized pump, this system should give us a nice water pressure in the shower and at the sinks.

Black water plumping typically isn’t a concern on a skoolie, most utilize a straight through gravity style toilet. A single large diameter

Storage Tanks

For the fresh water tank location, we may have to get a little creative. There are two obvious installation points: Interior, and Exterior. Each has its own advantages and disadvantages, so we must consider carefully.

Exterior is relatively straight forward, mounting along the frame under the carriage is a great option that frees up interior storage space. When mounting in the Interior, the best space we can think of, is under the bed. Unfortunately, that would mean giving up a large volume of interior storage space. On the other hand, mounting the tank in the interior means its less prone to freezing, unlike the under-carriage mount.

As you can see, each option has a variety of pros and cons that must be considered before beginning our build.


It’s not just the holding tanks that you should think about insulating, but also the water lines. There are ways to prevent holding tanks contents from freezing, such as agitating the water within, with an air pump. Often, for household plumbing, it is advised to leave a faucet tap cracked, so that a steady drip can flow, preventing water lines from breaking due to expanding freezing water within the lines . Heat Tape and Round Foam Insulation can be used to help stabilize the temperature within the pipes.

Fresh Water Fill Line

We know that we will need a fresh water fill line, and a water pressure regulator, like this. When using the regulator, it’s important to connect it directly to the water source. If connected at the Skoolie/RV, your fill line could be over-pressurized, and thus damaged.

To find out more about how and where to fill your water tanks check out our blog post on Finding Free Fresh Water

Smart Home

Along with the rest of the Smart Home Features I will be integrating into the Skoolie, I plan to continuously monitor the fresh water tanks level, as well as the temperature, using a Waterproof Digital Temp Sensor. Now not only will we now know when the tanks is getting low, but also when the lines might be getting too cold. Additionally, one of these temperature sensors can be integrated into the water heater, for live monitoring of the hot water temperature.

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