RV Fresh Water Parts

RV Fresh Water System Parts & Supplies

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Wash away your fresh water worries.

Keep your RV’s water system flowing smoothly with durable, dependable RV plumbing parts and fresh water system components. Whether you’re installing a new fresh water tank, replacing a water pump, or winterizing before the cold hits, we’ve got the RV water system parts and tools you need to do the job right. Choose from water pressure regulators, inlets, tanks, valves, filters, fittings, hoses, and shut-off kits—all designed to fit and function within your RV’s setup. From clean water delivery to proper drainage and cold-weather protection, our complete selection of RV plumbing supplies helps you build a safe, sanitary system from start to finish.

With over 75 years of assisting our neighbors and customers, over 1 million photos and videos taken to make sure you’re getting exactly what you need, and over 35 thousand installations completed, we’ve got the product know-how and experience to help you make the right choices for the job at hand.

How often should I sanitize my RV’s fresh water tank?

A clean water system means a safer trip. It’s best to sanitize your fresh water tank every six months, or any time you notice an odor or discoloration in the water. Flushing the system with a sanitizing solution or RV-safe cleaner helps prevent bacteria buildup and keeps your water fresh and safe for drinking, cooking, and showering.

How long can fresh water stay in my RV’s tank before I need to drain it?

Fresh water doesn’t stay fresh forever. If your RV has been sitting for more than two weeks, it’s a good idea to drain and refill the tank to avoid bacteria or stale water. Using an inline water filter can help keep contaminants out, so your water is safe from the first pour to the last.

Can I travel with a full fresh water tank?

You can, but there are a few things to keep in mind. Water adds weight—about 8.3 pounds per gallon—so a full tank affects fuel efficiency and handling. If you’re heading to a campsite with water hookups, it may make sense to travel with only what you need and fill up when you arrive. If you’re boondocking or heading somewhere remote, a full tank ensures you have enough water to last the trip.

What type of hose should I use to fill my RV’s fresh water tank?

Not all hoses are created equal. Always use a potable water hose designed for drinking water—these are BPA- and lead-free, keeping your water safe from contaminants. Garden hoses aren’t made for drinking water and can contain chemicals that affect water taste and quality. A dedicated drinking water hose keeps your system clean, safe, and ready to use.

How do I properly fill my RV’s fresh water tank?

Filling your fresh water tank the right way ensures clean, reliable water for your trip.

Connect a potable water hose to a clean water source.
Run water through the hose for a few seconds to flush out any debris.
Insert the hose into the fresh water inlet (usually labeled “Fresh Water Fill”).
Turn on the water supply and monitor the tank’s level—many RVs have a gauge to prevent overfilling.
Once full, turn off the water, disconnect the hose, and secure the inlet cap.

Using a water filter and pressure regulator helps protect your plumbing system and improve water quality, so your setup lasts longer and works better.