RV plumbing repair is a common call — and one that needs attention before a small leak or a failing pump turns into a bigger and more expensive problem. Everything in an RV plumbing system is compressed into a tight space, exposed to road vibration, temperature swings, and freeze cycles that residential plumbing never has to deal with.
We diagnose and repair the full spectrum of RV plumbing problems on-site at your location — no shop drop-off, no waiting.
Understanding Your RV Plumbing System
Proper RV plumbing repair starts with understanding how the system is laid out. There are three distinct systems at work in every RV, each with its own failure points.
The Potable Water Supply System
Delivers clean, pressurized water to every fixture — sinks, shower, toilet, and outdoor shower if equipped. Runs from your fresh water tank through a 12V demand pump, or from a city water connection through a pressure regulator, and distributes through PEX or polyethylene supply lines. This system is responsible for your water pressure, flow rate, and water quality at the tap.
The Sanitary Drainage System
Removes wastewater from every fixture and routes it to either your gray water tank (sinks and shower) or black water tank (toilet). Gravity does most of the work. Proper slope on drain lines, functional tank valves, and clear vent paths keep this system working. When any of those fail, you know about it quickly.
The Venting System
The piece most RV owners don’t think about until something goes wrong. Every drain needs an air vent to allow wastewater to flow freely without creating a vacuum or allowing sewer gas to back up into the living space. Roof vents can become blocked, vent lines can separate at connections inside walls, and improperly installed plumbing can eliminate venting entirely. Slow drains, gurgling sounds, and sewer odors inside the RV are all signs of a venting problem.
RV Plumbing Repair — What We Fix
Fresh Water Pump Issues
A water pump that cycles constantly, won’t build pressure, runs but produces no flow, or makes excessive noise is a common call. We test pump output pressure, check for downstream leaks causing continuous cycling, inspect inlet screen condition, and verify 12V supply voltage at the pump. Most pump failures are straightforward and all are repairable on-site.
Low Water Pressure & Flow
Low pressure at the fixtures can come from a failing pump, a partially closed valve, a clogged inline filter, a failing pressure regulator on city water, or a kinked supply line. We test pressure at the pump outlet and at the fixture to isolate where the drop is occurring.
Leaks & Line Repairs
PEX fittings, push-fit connectors, and threaded fittings all fail over time — especially after freeze damage or years of road vibration. We locate the leak, access the line, and repair it with the correct fitting type for the application. We don’t patch leaks with tape or temporary fixes.
Holding Tank Valves & Drainage
Gray and black tank dump valves take a beating over the years. A valve that won’t fully open, won’t fully close, or leaks around the stem is a problem that gets worse with time. We replace failed dump valves on-site and inspect tank connections and fittings while we’re there.
Sewer Odors & Venting Problems
If you’re getting sewer gas smell inside the RV, the source is usually a dry P-trap, a failed tank vent, or a cracked vent line. We trace the source systematically — check trap water levels first, then inspect roof vents for blockages, then trace vent lines for damage or separation at connections.
Winterization & De-Winterization
Proper winterization protects your entire water system from freeze damage. We blow out supply lines with compressed air, add RV antifreeze to trap seals and the water heater bypass if needed, and verify every low-point drain is open. De-winterization in the spring includes flushing the system, checking all connections for winter damage, verifying pump operation, and confirming the water heater is ready for use.
Water Heater Bypass & Tank Service
The water heater bypass is one of the most important and most overlooked parts of winterization. A bypass left in the wrong position means you’re filling your water heater with antifreeze instead of protecting it. We verify bypass valve position during both winterization and de-winterization and check anode rod condition on tank-style heaters.
How We Approach Every RV Plumbing Repair
Every plumbing repair starts the same way — a full system pressure test and operational check before we start pulling things apart. We find the actual source of the problem, not just the most visible symptom, and we fix it with the right materials for an RV application.
We don’t guess, we don’t patch, and we don’t leave until the system holds pressure and operates correctly.
OUR TOOL KIT
Plumbing gear we trust
Camco brass RV water pressure regulator (40055) — Caps park pressure before it reaches your fittings and PEX. The cheapest leak prevention there is.
Camco TastePURE inline water filter — Filters sediment and chlorine taste at the hose bib, before water gets into the tank or lines.
Camco TastePURE 25-ft drinking water hose — A dedicated drinking-water hose. Don’t use the same hose you rinse the tank with.
As an Amazon Associate we earn from qualifying purchases.
Need RV Plumbing Repair?
We come to you — campsite, driveway, or storage facility. Book online or call and we’ll get it sorted.