How the system is installed
From the fit conversation about your bay through to the walkthrough at handoff.
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Water treatment and a dedicated wash connection, configured for the service bay. See the equipment together and the controls you use at the panel.
The water treatment equipment and wash setup share one service bay. The hose reel stays mounted, with the pressure washer and panel within reach. This photographed build also stores the aftercare kit up front.
Each installation is configured around the space and plumbing in your rig. The photos show one arrangement; your equipment and accessories are specified with your installation.


Removing the wash kit exposes the working layout. The hose reel and washer remain mounted beside the treatment equipment.

Valve labels and meter displays sit where you can see them. Control labels vary between builds, so use the operating instructions supplied for your installation.
Softening and filtration serve the connected onboard supply. Watch the soft-water overview at 52:48.
Follow the filmed process for the coach, from preparing the wash products through to the final rinse. Jump to foaming and washing at 21:29.
The installed softener still needs regeneration, and exhausted DI resin needs replacement. See regeneration at 54:02 and resin replacement at 40:20.
Softening reduces hardness in the connected onboard supply, and filtration addresses the substances covered by the selected media. The DI stage is used for the exterior final rinse. The controls and plumbing keep each treatment available for its intended job.
Softening exchanges calcium and magnesium for sodium ions. It does not lower total dissolved solids or guarantee longer DI resin life. How much rinse water a resin fill treats depends on the dissolved ions entering it and the volume used.
What each stage does on its own is a longer conversation, and it has its own page.
Softener vs. filter vs. spot-free rinse →
A dual TDS meter sits on the panel. One probe reads the water arriving from the hookup. The other reads the water leaving for the hose.
On the rig we filmed, the arriving side held near 429 ppm. The output display dropped below 5 ppm near the end of the clip.
That is one rig on one hookup, and it is worth saying so plainly. Your arriving number is whatever the park hands you that day. That reading is a demonstration, not a guaranteed outlet value. A TDS meter estimates dissolved solids from conductivity; use a separate hardness test to check the softener. Neither reading establishes drinking-water safety.

The clip shows input near 429 ppm and output falling below 5 ppm. One rig, one hookup; the still image shows the starting readings.
Inside the coach, softer water helps soap lather and reduces the hardness that contributes to scale on heating surfaces and fixtures. Routine water-heater and plumbing maintenance still matters.
Outside, use the DI water for a final rinse after washing and removing the soap. Check the rinse-water TDS and follow the service instructions so exhausted resin does not leave new mineral spots.
Treated rinse water helps prevent new deposits. It does not repair existing etching. The softener needs regeneration, and the filter and DI resin need service. Watch the regeneration demonstration or explore the RV water softener system.

Send the make and model and a rough sense of how the service bay is laid out. That gives us enough to say which configuration fits and put an honest number against it. Call (314) 280-3253 or email jason@h2osimplified.com.