A Comprehensive Guide to RV Wastewater Tanks for Efficient Travel

An old proverb says you never miss the water until the well dries. Any RV camper understands that water is an important resource that should not be taken for granted. An RV’s water system must have a dependable and effective water tank that can supply enough water to the showerhead, toilet, and kitchen faucet to meet basic daily needs.

RV is not ready to be a home for someone without a few fundamental systems, including an RV water tank, RV protection, and any other RV accessories, regardless of the RV's size, year, or class.

RV wastewater tanks


RV water tanks are robust and made to withstand repeated use throughout the day without overheating or failing. They are also compact enough to be installed and carried with ease. RV camping is more enjoyable with proper water tanks.

Here is a comprehensive water tank guide for B2B buyers to optimize water storage in RVs.

Why does an RV need a water tank?

RV campers should have an emergency supply of fresh water, plenty for all daily tasks, and self-hydration when traveling in their camper. As a result, they should be very mindful of the freshwater holding tank's capacity and ensure it can accommodate all of the needs.

Three independent water holding tanks are found in most RVs. Each of these tanks supports the plumbing system in the camper in a completely different way. Each tank needs specialized maintenance to make it remain functional.

Now, have a look at various types of RV water tanks available for B2B purchase:
  • Fresh water tank
The only water entering the RV is from the freshwater tank, which stores clean drinking water.

Sometimes, they can also be called potable water tanks. The word "table" describes water's suitability for human consumption. This phrase is labeled on spigots at gas stations, RV parks, and any place with a freshwater connection.

Never add water from a spigot marked "on-potable" to your freshwater tank. Non-potable water is unfit for human consumption since it hasn't been filtered or treated.
  • Grey water tank
The grey water tank collects all the wastewater from the shower and sink that goes down the drain.

Grey water is typically from bathing, washing dishes, and food preparation. It is termed grey water because, after being emptied from the tank, it frequently has a greyish tint to it.
  • Black water tank
All the contents of the toilet are stored in the black water tank. The terms "septic tank" and "aste tank" frequently refer to the black water tank. The waste flowing from your RRV's toilet into this tank is liquid and solid. A black water tank is only present in RVs that contain toilets.

You might also find a camper with a combined grey and black water tank. All the wastewater that escapes your RV is stored in these tanks.

These tanks are referred to as "lack water" because the contents of the former are noticeably darker than those of the latter.

The importance of choosing the right RV water tank size material for different travel needs

Capacity is arguably the most crucial information regarding the holding tanks in the RV. In certain areas, it is also necessary to provide proof of the water-holding tank capacity at the time of registration.

An RV can transport between 20 and 100 gallons of freshwater into the backcountry on average, giving everyone comfort and peace of mind while enjoying a natural getaway. The ability of motorhomes and RVs to transport the contemporary conveniences of home outside is their major advantage.

A three-digit label often indicates an RRV's holding tank capacity—the format X-X-X can be used to write this number. For instance, if a label reads 50-35-30, it indicates 50 gallons in the freshwater tank, 35 in the grey water tank, and 30 in the black water tank. Although the tank capacities aren't usually marked, users can always find the capacity on the RV or in the owner's manual.

A large class-A RV rarely comes with a freshwater tank smaller than 60 gallons. Class-C RVs hold anywhere from 35-60 gallons. Class-B RVs hold anywhere from 20 to 40 gallons.

Most RV campers will deal with their RRV's plumbing system every day. Many daily tasks in an RV involve the plumbing, including cleaning, cooking, and using the restroom. For this reason, while seeking an RV, it is essential to be knowledgeable about the plumbing system and to have a thorough understanding of it.

Which RV tank size is required?

How big are water tanks in RVs, then? Many ask how long a 40-gallon freshwater tank will last because that's the typical size of an RV freshwater tank. Individual differences will result in vast differences in holding tank capacities. The following variables will affect the size of tanks required:
  • The amount of water needed for bathing and cleaning
  • How many people are using the RV or camping
  • How many days were spent in a campsite with a water hookup
  • The amount of water needed to stay hydrated
  • How much water is used in cooking
Take some time to consider these factors critically, and then you can decide which size of tank you need in the RV. Running out of freshwater is frightening and may even be fatal. Never go to a distant wilderness area by RV without ensuring you have sufficient clean water.

Measuring the RV Water Tank

Determining the camper's precise holding tank capacity can occasionally be challenging. There are methods to determine how many gallons each tank can contain.

Simply searching online should be the first step. The manufacturer's website should list the holding tank's size and capacity.

If your online search turns up nothing, measure each tank's height, width, and length using a tape measure after locating each one in the camper. Use those values to find the total cubic feet, inches, or cm volume.

You can also hire an RV expert to undertake this work for you. A technician can obtain dimensions for you and will have the necessary tools and knowledge to access the tanks safely.

How to refill a freshwater RV tank?

These recommendations make filling your fresh water tank simple, safe, and hassle-free:
  1. Invest in a drinkable water hose. A hose designated specifically for a freshwater tank is known as a potable water hose. Usually white in hue, they are composed of a substance that doesn't impart an artificial flavor to the water.
  2. Use spigots marked "notable" or "drinkable" only when filling. Never fill with unidentified water, even if it takes a while to locate a faucet providing drinkable water.
  3. Never fill your fresh water tank via the black water drain pipe. It would be terribly disgusting and quite detrimental to your health to do this.
  4. Some companies sell water treatment tablets that you may add to your freshwater tank to help cleanse the water and stop bacteria growth. It is made of chlorine dioxide, which is safe to consume in small amounts. If you decide to utilize treatment pills in your tanks, please make sure you thoroughly explore your options and take caution when determining the right amount to use.

How to release sewage from RV?

Here are many tips to release sewage from RV:
  1. After locating a dumping station, place the drain valve on the RV next to the dumping port. Open the valve on the black tank and connect the wastewater line to the dumping port on the RV. The black tank should be heard, perhaps even seen, emptying into the dump station stank.
  2. Users should empty the septic tank before emptying the grey water tank. This serves the straightforward function of letting grey water drain from the hose when emptying the black water tank. The procedure is the same as emptying the black tank.
  3. Users can release the sewage by linking the RV to the sewage treatment station through a pipeline in the campground.
  4. Users can dump the sewage in sanitary sewage wells. Make sure you differentiate the sewage, especially when it contains chemicals, including detergent and bath and kitchen water.
  5. Users can apply emission-free and eco-friendly toilet amenities usually available in the luxury RV. With this, excrement can be automatically broken down.
  6. Some RV campers release sewage in the suburban fields, but we do not advise this. Sewage contains hazardous chemicals that cannot be released into the natural habitat.

RV Water Tank by HOMFUL

It is a portable water tank that is lightweight with large wheels. To build this water tank, we use heavy-duty food-grade HDPE, which is lightweight and robust. Users can use this tank for black or fresh water. It is easy to carry when it's time for cleaning or refilling because of its two large rolling wheels.

RV Waste Water Tank by HOMFUL

The large wheel and handle make it simple to take on the road. We build this tank with lightweight and durable materials. For cleaning, users can utilize an internal water rinse. Or clean the tank with a brush or hand through the largemouth design hole. Users can empty the tank faster without spilling by matching the connecting hose with the bottom hole.

https://www.homfulgroup.com/rv/waste-water-tank/waste-water-tank-71c08b.asp


Publication Date: 1/2/2024

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