# Fresh Water System Repair: Cost, Hours and Process in Hacienda Heights Fresh water system repair covers the fill, the tank, the city water inlet, the supply lines and the fittings that carry potable water through a coach. Most leaks are at a fitting rather than in a line, and the damage that matters is not the water you can see but the subfloor it reached first. ## Specifications - Price band: $285 to $4,500 - Shop hours: 1 to 18 hours - Turnaround tier: Systems and electrical - Insurance billable: yes - Parts lead time: PEX, fittings and valves in stock. Tanks and city inlet assemblies 5 to 15 business days. - OEM brands: Shurflo, Dometic, Thetford, Lippert, Furrion ## Where fresh water systems actually leak PEX line itself rarely fails. The failures are at transitions: crimp fittings, push fit connectors, the manifold, the pump inlet and outlet, the city water inlet check valve, and the tank fittings where a bulkhead passes through the tank wall. Every one of those is a mechanical joint on a vehicle that vibrates. Freeze damage is the second category, and Southern California owners are not immune to it. A coach towed to the Sierra or Big Bear over a winter weekend with water in the lines splits a fitting or a pump head, and the split does not announce itself until the system is pressurized back at sea level. The third is the city water inlet. Its internal check valve is a small plastic and rubber part that fails quietly, and when it does, the pump pushes water back out the inlet instead of to the taps. Owners describe that as a weak pump. It is a $40 part and an hour. - Crimp and push fit fittings, the single largest category - Pump inlet and outlet connections, which see the most vibration - City water inlet check valve, which fails quietly and mimics a weak pump - Tank bulkhead fittings and the fill and vent connections - Freeze split fittings from a cold weekend with water in the lines - Manifold and shutoff valve bodies, especially on older plastic manifolds ## Finding the leak before opening the floor We pressure test rather than hunt visually. The system is isolated and pressurized, then watched for decay. A system that holds pressure has no leak, full stop, and that result alone redirects a lot of jobs toward a roof or a window instead. Where pressure decays, isolating in sections narrows it fast. Close the bathroom branch and see whether the decay stops. That approach usually locates a leak within an hour without removing a single panel, which is the whole point, because panel removal is where the labor lives. Then we read moisture in the floor around the suspected area. This is the part owners most need and least expect: the leak is usually smaller than the damage. A weeping fitting behind a wall has been feeding the subfloor for months, and finding out how far that went is worth doing before the repair rather than after. ## Cost, hours and the claim question A single accessible fitting or a city water inlet is often one to two hours at the posted mechanical and electrical rate of $260 per hour, near the bottom of the band. A tank replacement, a line run behind cabinetry or a manifold rebuild reaches 10 to 18 hours at the top of it. Tanks and inlet assemblies run 5 to 15 business days. The estimate tier is the RV systems estimate at $150, credited against an authorized repair, and it includes the pressure test and the moisture reading. Those two results are what makes the repair scope real rather than a guess. On the carrier side, a sudden line or fitting failure with resulting water damage is frequently a covered event, while a slow weep over two seasons is normally treated as maintenance. The distinction is causation and duration, and we photograph and write the file so an adjuster can read it either way. Where subfloor reconstruction is needed, it is quoted separately so the two scopes stay legible on a claim. ## Not included - Winterization and seasonal water system prep belong to our maintenance program, not here. - We do not chase water leaks at a storage yard. Pressure testing is bay work. - Subfloor reconstruction from long term intrusion is quoted separately as structural work. ## Questions **How do you find a water leak in an RV without tearing it apart?** Pressure test first. The system is isolated, pressurized and watched for decay, then narrowed by closing branches one at a time. That usually locates the leak within an hour with no panels removed, and if the system holds pressure the leak is not plumbing at all, which redirects the job toward a roof, a window or a slide seal instead. **Why does my fresh water tank drain when nothing is running?** Common causes are a failed low point drain valve, a cracked tank bulkhead fitting, or a check valve that lets the tank siphon toward the city inlet or the pump. All three are inexpensive parts. The reason to address it quickly is not the water loss, it is where the water is going, which is usually into the subfloor. **My pump runs but pressure is weak. Is the pump bad?** Often it is the city water inlet check valve instead. When that small internal valve fails, the pump pushes water back out through the inlet rather than to the taps. It presents exactly like a tired pump and it is a modest part and about an hour of labor. We test both before recommending a pump. **Will insurance cover water damage from a plumbing failure?** Frequently, where the failure was sudden. A split fitting or a burst line with resulting damage is normally a covered event. A slow weep that fed the subfloor over two seasons is usually treated as maintenance. Causation and duration are the deciding factors, so we document the failure point and the moisture readings and keep the subfloor scope on a separate line. --- Source: https://ocrv.club/rv-service/fresh-water-system-repair OCRV Center, 23281 La Palma Ave, Yorba Linda, CA 92887 Phone (949) 799-3387. Email info@ocrvcenter.com. Serving Hacienda Heights and the surrounding area. 18.4 miles, 24 to 38 minutes via SR-60 west to Fullerton Rd, then south to La Palma Ave. In shop work only. All estimates are priced and credited against an authorized repair.