RV Plumbing & Water System Repair
Mobile fixes for water pumps, leaks, tank valves, sensors, and freeze damage. Local pros also winterize and de-winterize at your site.
Loose water is the most harmful thing inside an RV. RV plumbing is built lighter than the pipes in a house. PEX fittings shake loose on rough roads. Water pumps lose prime and burn out. Waste-tank valves stick or drip. A local pro closes off the water system and tests it one part at a time. That way leaks get found at the source, not where the water pooled.
Common on-site fixes include 12V pump and accumulator swaps, city-water inlet and check-valve work, PEX fitting and fixture repair, and waste-tank valve rebuilds. Local pros also fix tank gauges stuck on full. That is usually a bad sender or a ground problem, not a new tank.
Seasonal care is where mobile service really helps. A local pro winterizes with an air blowout and antifreeze. In spring the pro de-winterizes, cleans the lines, and pressure tests. This is done in your storage spot or driveway. You skip two trips across town each year.
Sound familiar?
- The pump runs when no tap is open
- Low or pulsing water pressure
- Water under cabinets or in the underbelly
- Tank gauge stuck on full or empty
- Gate valve won't close or drips after dumping
How the diagnosis works
- A pro pressures the system in sections to find leaks
- A pro tests pump prime, the pressure switch, and the accumulator
- A pro checks the city-water inlet and check valve
- A pro tests tank sensors and their grounds
- A pro looks under the belly for freeze or road damage
How the repair typically goes
- Replace bad pumps and set the right cutoff pressure
- Redo bad PEX joints with the right fittings and crimps
- Rebuild or replace waste valves and seals
- Fix or replace bad tank senders
- Pressure test the finished system and check for no cycling
Good fit for mobile repair
- Pump, fitting, valve, fixture, and sensor repairs
- Finding leaks and replacing one section of line
- Winterizing and de-winterizing
When a shop is the honest answer
- Wide freeze damage across many lines and tanks
- Floor or wall repairs after long-term leaks
- Tank swaps that need the under-belly dropped
Common components and causes
- 12V water pumps and accumulators
- PEX fittings, crimp rings, and tubing
- City-water inlets and check valves
- Waste-tank gate valves and seals
- Tank level senders
- Road shaking loosening fittings
- Freeze damage from partial winterizing
- Worn pump parts and lost prime
- Valve seals dried out between trips
- Over-tight plastic fittings cracking
Safety first
- Shut off the pump and city water at the first sign of a leak inside. Minutes matter when water gets into walls and floors.
- A pro does waste-system work with proper clean-up steps. Please leave any hooked-up sewer hoses in place for the pro.
What affects the price
Every visit starts with diagnosis and a written quote before repair work begins. These factors move the number:
- How easy the leak is to reach, such as a cabinet, the belly, or a wall
- Parts needed and fixture quality
- System size for winterizing
- Clean-up needs for waste-side work
How much does mobile RV Plumbing Repair cost?
Most mobile RV Plumbing Repair runs $150 to $600 for most leaks and fixtures. On-site labor typically runs $120–$175 per hour, with a service call of $95–$150, credited toward the repair. Simple fixes cost the least. The final price depends on parts, roof or slide access, and your rig make and model. These are rough ranges, not a quote. Every visit starts with an on-site check and a written quote before any work.
- Fix a leaking fitting or supply line
- $150–$400
- Faucet, toilet, or valve replacement
- $200–$500
- Water pump replacement
- $250–$550
- Winterization / de-winterization
- $100–$250
- On-site labor rate
- $120–$175 per hour
- Service call / diagnostic
- $95–$150,credited toward the repair
Want a real number for your rig? Call (830) 402-5300 and tell us what it is doing. You get a written quote before any work begins.
Where this service is available
Related services
- RV Water Heater Repair
Mobile service for RV water heaters. Local pros fix elements, thermostats, anode rods, gas valves, and ignition faults, and handle tankless units on-site.
- RV Maintenance
Planned upkeep at your site. Local pros care for roof sealant, water systems, and batteries, and handle seasonal winterizing.
- Pre-Trip Inspection
A written, multi-point inspection at your site before a trip or purchase. A local pro checks the roof, propane, batteries, appliances, and tires, and flags must-fix items.
Frequently asked questions
What should I do first when I find water inside my RV?
Turn off the water pump right away. Then close or disconnect the city-water connection. Open a faucet to let the pressure out. Put towels or a pan under any drips. Pull items out of wet cabinets so air can reach the surfaces. The faster you take the pressure off, the less water gets into the walls and floors.
How is mobile RV repair priced?
You pay a service-call fee that covers travel and diagnosis. Then you pay for parts and labor on the repair you approve. A local pro gives you the diagnosis and a clear quote before any repair work starts. A pro never works on an open-ended okay. A few things change the price. Those are the part type, how hard the access is, and the size of the repair. Each service page explains this.
How quickly can a local pro get to me?
It depends on a few things. Your spot in the service area matters. So does how busy local pros are and whether your problem is an emergency. A local pro books scheduled visits for a time window and puts emergency calls first by safety. When you call, we take your request and share a real ETA from the pro instead of a blanket promise. We also follow up with you if the schedule changes.
Need rv plumbing repair?
Call for honest phone triage, or send a service request and dispatch will follow up with a realistic window.