RV Plumbing Experts in Lakeland, FL
RV plumbing is nothing like residential plumbing. PEX lines, 12-volt water pumps, three separate tank systems, and constant vibration from the road create unique failure points that a household plumber simply is not trained to handle. In Florida, the heat accelerates seal and gasket deterioration, and standing water in tanks becomes a breeding ground for bacteria faster than in cooler climates.
Our technicians understand the complete RV water system—from the city water inlet to the black tank dump valve, and every fitting, valve, and connection in between. Whether you are dealing with a water pump that will not stop running, a toilet seal that has dried out and cracked, or a grey tank sensor that reads full when the tank is empty, we have seen it, diagnosed it, and fixed it. At Nationwide Haul, we treat your RV plumbing with the same precision we bring to chassis and engine work—because a water leak behind a wall can cause just as much damage as a mechanical failure under the coach.
Plumbing Services We Provide
Water Pump & Pressure
Your RV water pump is the heart of your fresh water system when you are not connected to city water, and when it fails, everything stops. We diagnose and repair Shurflo and Flojet pumps—the two most common brands in the RV industry—addressing pulsing delivery, low water pressure, noisy operation, and pumps that refuse to prime. We also service and install accumulator tanks, which smooth out pressure fluctuations and reduce pump cycling that wears the motor prematurely. For city water hookups, we inspect and replace city water pressure regulators that protect your system from campground water pressure spikes that can blow fittings and damage valves throughout the coach.
Fresh Water System
Your fresh water system includes the tank, every line running through the coach, and every connection that delivers water to your faucets, shower, and appliances. We perform complete tank sanitization to eliminate bacteria buildup—especially important in Florida where warm temperatures accelerate microbial growth. Our technicians repair and replace water lines using PEX and Pex-B tubing with proper fittings and valves rated for RV use. We handle hot water crossover diagnosis, where a faulty check valve or mixing valve allows hot and cold water to blend incorrectly throughout the system. We also provide full winterization and de-winterization services for seasonal travelers heading north, ensuring every line, trap, and low point is properly protected or flushed.
Grey & Black Tank Service
Holding tanks are the part of RV plumbing that nobody wants to think about—until something goes wrong. We handle tank repair for cracks, leaks, and mounting issues, as well as valve replacement for both gate valves and knife valves that seize, leak, or refuse to close completely. Tank sensors are one of the most common complaints we hear—we clean and replace sensors so your monitor panel gives you accurate readings again. We install and repair tank flush systems that make cleaning easier and more thorough, and we address holding tank vent repairs that prevent odors from entering the living space. If your black tank is not draining properly or your grey water is backing up into the shower pan, we will find the obstruction and resolve it.
Toilet Repair
RV toilets take a beating—they are used constantly, the seals dry out in storage, and the mechanisms are fundamentally different from residential toilets. We service Thetford and Dometic toilets, the two dominant brands in the RV market. Common repairs include seal replacement (the number one reason a toilet will not hold water in the bowl), foot pedal mechanism rebuilds, water valve replacement, and flush ball service. For coaches equipped with macerator toilets, we service the Dometic MasterFlush system including the macerator motor, blade assembly, and discharge plumbing. We also offer composting toilet installation for owners looking to eliminate black tank maintenance entirely—a popular upgrade for boondockers and full-timers.
Faucets, Showers & Fixtures
Worn-out faucets, leaking shower heads, and corroded fixtures are more than cosmetic annoyances—they waste water, create moisture damage behind walls, and make daily life in your RV frustrating. We replace, repair, and upgrade kitchen and bathroom faucets, shower heads, mixing valves, diverters, and drains. If you are experiencing low water flow at a single fixture, we diagnose whether the issue is a clogged aerator, a failing valve, a kinked line, or a system-wide pressure problem. We also handle fixture upgrades for owners who want to replace builder-grade components with higher-quality residential-style alternatives.
Water Heater Plumbing
Your RV water heater connects to both the fresh water system and the propane or electrical system, making it a critical intersection of multiple coach systems. We replace anode rods—the sacrificial component that protects the tank from corrosion and should be inspected at least once a year. We service and replace bypass valves used during winterization, flush tanks to remove sediment buildup that reduces efficiency and capacity, and replace check valves and pressure relief valves that prevent dangerous pressure buildup. We also inspect and repair winterization connections to ensure your bypass system functions correctly when you need to protect the heater during cold weather storage.
Underbelly & Line Repair
Some of the most critical plumbing in your RV is hidden behind the underbelly—the protective membrane that shields water lines, tanks, and connections from road debris and the elements. When a line freezes and bursts, when a fitting vibrates loose after thousands of miles, or when rodents chew through tubing, accessing and repairing that damage requires dropping sections of the underbelly and working in tight spaces. Our technicians perform underbelly access for frozen and burst line repair, re-insulation of exposed lines, and heat tape application for owners who travel or store their RV in cold weather. We reseal the underbelly properly after every repair to maintain the thermal and moisture barrier that protects your plumbing year-round.
Common RV Plumbing Problems
Many plumbing issues share similar symptoms but have very different root causes. Here are the problems we diagnose and resolve most frequently at our Lakeland facility:
- Water pump runs constantly — This almost always indicates a leak somewhere in the fresh water system. Even a small drip at a hidden fitting can keep the pump cycling endlessly, wearing out the motor and wasting battery power.
- Low water pressure — Causes range from a failing pump or clogged inlet screen to a kinked line behind a wall or a partially closed valve that was left in winterization position.
- Foul smell from tanks — Bacteria buildup in holding tanks is common, especially in warm climates, but a blocked or damaged tank vent can also force sewer gases back into the living space.
- Toilet will not hold water in the bowl — The flush seal has dried out, cracked, or warped. This is the single most common RV toilet complaint and is a straightforward repair when caught early.
- Grey water backing up — A stuck gate valve, a blocked drain line, or a full tank with faulty sensors can cause grey water to back up through the lowest drain in the coach—usually the shower.
- Water heater bypass leaking — Bypass valves used during winterization can develop leaks or get left in the wrong position, sending cold water into the hot side or allowing the tank to drain when it should be holding.
Florida-Specific Plumbing Concerns
Operating and storing an RV in Florida introduces plumbing challenges that owners in northern states rarely face. The intense UV exposure degrades exterior plastic fittings, city water inlets, and hose connections faster than in cooler climates—we see cracked and brittle exterior fittings regularly on coaches that spend most of their time outdoors. Florida heat puts additional stress on water pumps, especially when a coach sits in direct sun and the pump compartment reaches extreme temperatures.
Bacteria growth in holding tanks and fresh water tanks accelerates during hot months. A tank that was sanitized in the spring can develop significant microbial contamination by midsummer if the water sits stagnant. We recommend fresh water tank sanitization at least twice a year for Florida-based RVs, and more frequently for coaches that are not used regularly. Regular sanitization is not just about taste and odor—it is about protecting the health of everyone on board.
Why Choose Nationwide Haul
- ASE-Certified Technicians trained specifically in RV water and plumbing systems—not residential plumbers guessing at RV-specific components
- Complete System Diagnosis — we trace the problem from symptom to source, whether that means pressure testing lines, dropping the underbelly, or pulling a toilet to inspect the flange
- OEM and Quality Aftermarket Parts — we stock Shurflo, Flojet, Thetford, and Dometic components so common repairs do not require weeks of waiting for parts
- Warranty-Friendly Service — we work with extended warranties and RV protection plans including Good Sam, Wholesale Warranties, and manufacturer programs
- Honest, Transparent Pricing — detailed estimates before work begins, no surprise charges, and we explain exactly what we found and why we recommend the repair
- Total RV Care — plumbing, appliances, roof, chassis, and engine all serviced under one roof, so you never have to shuttle your RV between multiple shops