RV Composting Toilet Options: End The Black Tank Stank

Your Guide To Buying The Best RV Composting Toilet

The idea of owning an RV composting toilet might seem disgusting to many RV users but it is an amazing eco-friendly option. It does require some extra work but it is easy to use and install. It doesn’t smell either.

Consider it as a mini ecosystem, which separates the solid matter from the liquid. The matter is converted into a humus, which you dump out on the soil. It is like spraying natural fertilizer to a farm. There is a variety of RV composting toilets available in the market and our guide will help you find the best one.

Advantages of using an RV composting toilet

An RV composting toilet offers more benefits than you could have ever imagined. Here are three advantages you need to know about:

1. Environment-friendly

We have already mentioned how an RV composting toilet is a more eco-friendly option that other types of RV toilets. It also requires less work because you don’t have to dump the compost as frequently as you dump a normal toilet.

2. Perfect for boondocks

If you are traveling to the boondocks and spending a few days out there, taking an RV composting toilet with you is the best idea. You don’t need the black water tank but only the white and grey water tank.

3. Re-sellable

Yes, you will get many buyers interested in purchasing your used RV composting toilet. After you are done with your RV life or want to upgrade to a better toilet, you can sell it.

4. No plumbing

A composting toilet doesn’t need any water or plumbing connection. The installation is quick and easy as well.

Smells less than a normal toilet

It is a common misconception that an RV composting toilet smells terrible but that’s not true. It is because its internal system separates solid matter and liquid, so you don’t get a sewage-like consistency or smell. When you open the tank to dump it, the matter looks and smells like dirt. Also, the toilet has a fan that circulates air to separate the smell from the solid contents.

The compost makes an excellent plant food. We humans have been using animal waste as manure for a long time and human waste actually works in the same way. You can use the manure for fresh herbs in your RV or just sprinkle it in the forest nearby. Also, urine is a great source of ammonia, which adds nitrogen to the soil.

Features to look for while purchasing an RV composting toilet

The last thing you want to do is make a wrong purchase and regret about it. Here are x features the RV composting toilet you pick should have:

1. Capacity

The cost of the toilet varies according to its size. If you an alone RVer, a toilet with a small storage tank capacity will work for you. However, if you have a family with you, you need to look into bigger options. Also, a small toilet will suffice a day’s trip for four people.

2. Durability

Durability is the most crucial feature on our list. The material and the manufacturing process has a lot to do with it. Most composting toilets are partially made of vitreous china and plastic. Even if it costs more, purchase a high-quality product even though it costs more.

3. Decomposing rate

The decomposing rate depends on whether you purchase an electric or non-electric toilet. The former type has a faster breakdown rate since it uses power for the process. A non-electric toilet isn’t bad either but the rate of breakdown is extremely slow.

4. Portability

The weight of the toilet depends on its size. There are toilets that only weigh 28 lbs but some are as heavy as 400 lbs. If you move frequently as most travelers and RV’rs do, you might want to purchase a lightweight toilet so you keep your vehicles total weight at a reasonable weight.

A portable rv waste tank is another option to use when you do not have access to full hookups. This is essentially dumping your rigs grey or black tank into a container on wheels and using that to haul to a dump site.

5. Design

There are two types of composting toilet designs — central composting and self-contained. If you live in a neighborhood where many RVs or houses use composting toilets, you can use a central composting system (like a multiple set of porta-potties all using one system). If you are the only one using it, stick to a self-contained variant.

6. Power

You can choose between electric and non-electric composting toilets, whichever suits your needs better. A non-electric toilet is more eco-friendly since it doesn’t use any power, so you aren’t burning any fuel.

7. Warranty

Some RV composting toilets come with 25 years of manufacturer’s warranty, which is why they are resellable. They are quite economical considering the benefits they come with.

Nature’s Head Self Contained Composting Toilet 

Nature's Head Self Contained Composting Toilet with Close Quarters Spider Handle Design
  • No one - and I mean no one - will beat my customer service and individual support
  • Easy to install by any reasonably handy person.
  • Absolutely No Odor. No Maintenance. 5 Year Warranty.
  • Huge Capacity. 2 people using full time will empty every 4-6 weeks. Easy empty in 5 minutes.
  • A vast improvement over older composting toilet designs. This one works!

Perfect for rugged use in your RV, Nature’s Head Self Contained Composting Toilet with Close Quarters Spider Handle Design is a lightweight toilet that weighs only 28 pounds and uses only 12 volts of energy. It is self contained and a portable variant that has proven to withstand the harsh marine environment, where there is no electricity or power. It comes with a full-size elongated seat, which is more comfortable than a round pot. The toilet comes with a five years manufacturer’s warranty and 60 days return policy.

It is a dry toilet, which means it separates liquid from the solid matter before it reaches the composting tank. The toilet’s low volume air circulation fan is placed in the top portion, which not only removes foul air but also keeps the toilet environment fresh. An excellent choice for outdoor use, this product by Nature’s Head doesn’t require any water. It is easy to clean as all you need is clean water or moistened paper towel.


  1. Waterless and portable self contained design
  2. Five years manufacturer’s warranty and 60 days return policy
  3. Lightweight and easy to clean
  4. Separates liquid and solid matter before it reaches the composting tank


  1. Expensive
  2. Doesn’t have an external vent
  3. Has a small urine tank

Check out the Extended Natures Head Toilet Review Here.

Nature’s Head Dry Composting Toilet with Standard Crank Handle

Nature's Head Dry Composting Toilet with Standard Crank Handle
  • Hand crank agitator in base for fast composting
  • User friendly
  • Easy installation
  • Features a molded design
  • Includes 5' vent hose, bottle cap, 12v power plug

Nature’s Head Dry Composting Toilet with Standard Crank Handle is a user-friendly model, which has a crank agitator that speeds up the composting process. It is one of the company’s most popular products having sold over 10,000 units. The self-contained toilet has a urine-diverting mechanism, which directs liquid to a separate tank at the source instead of transferring it from the composting tank. Disassembling the toilet for dumping its contents is easy and hassle-free.

The body is made out of hard stainless steel, which makes it highly durable and designed for easy cleaning. Nature’s Head is known for its prompt and round-the-clock customer service. If you have any trouble, email or call them and they will attend you. Just like the previous products, the company offers five years warranty and 60 days return policy on the product. The only downfall of this toilet is that is doesn’t come with an external vent but the air circulation function works fine.


  1. Stainless steel construction offers superior strength and durability
  2. Oval design for comfortable experience
  3. Five years manufacturer’s warranty and 60 days return policy
  4. Easy to disassemble while cleaning out the compost tank


  1. Expensive compared to most composting toilets
  2. Not ideal for tropical areas as it attracts flies and maggots
  3. Composting chamber lid isn’t airtight

Saniflo SANICOMPACT One piece Toilet

SANIFLO Sanicompact - Dual-flush System - Residential
  • BONUS HALF BATH: The Sanicompact is a self-contained dual-flush toilet system used to install a half bathroom up to 9 feet below the sewer line,...
  • DUAL PURPOSE: The Sanicompact will also discharge gray water from a sink. The wastewater drains into a 1.25” hose connection in back of the...
  • EFFICIENCY AT ITS FINEST: The standard dual flush version uses 1.28 gpf or 1 gpf and uses less water than any regular toilet but with the same...
  • TECHNICAL SPECIFICATIONS: Motor: 0.5 HP oil-filled thermally protected; Noise level ≤ 53 dBA (Lp) (measured at 3 ft.); Discharge rate at 9 ft:...
  • 3 YEAR WARRANTY: All of Saniflo's products have a 2 year warranty with purchase, and an extended year with registration. Our warranty program can...

This Saniflo one piece toilet is a medium-sized toilet perfect for half bathrooms and RV homes. Its unique design contributes to the comfort of the user. It uses one gallon of water per flush, which is released after you press a button on the side. It is built using the macerating pump cycle flush system, which cleans a large amount of solid waste with minimum quantity of water. It can pump nine feet of water in vertical direction and 100 feet in horizontal direction.

It is a narrow toilet that can fit easily fit into tiny spaces like attics, under stairwells, and in lofts. You can hook the toilet’s plumbing connection to the sink’s plumbing connection. The toilet seat hinges are made out of chrome, which imparts strength and durability. It also has a non-return valve, which avoids backflow of wastewater after you flush the toilet. You get a two years limited manufacturer’s warranty on this product. It also comes with a 180 days return policy if the motor is damaged and 30 days return policy on the vitreous china bowl.


  1. Macerating pump cycle flush system cleans a large amount of waste with one gallon of water per flush
  2. Narrow but comfortable toilet for small spaces
  3. 180 days return policy on toilet motor


  1. Mounting setup could have been better
  2. Only two years limited warranty
  3. Poor customer service

Sun-Mar Excel Non-Electric Self-Contained Composting Toilet

Sun-Mar Excel Non-Electric Self-Contained Composting Toilet, Model# Excel-NE
  • Non-electric model; ideal for applications off the grid
  • Low profile unit complements any bathroom
  • Uses no water
  • 100% non-polluting
  • Includes variable diameter bio-drum with recessed handle for processing compost

A non-electric model by Sun-Mar, this self-contained composting toilet follows a waterless mechanism. It is a 100 percent eco-friendly and comes with a variable diameter bio-drum that assists in easier composting. The toilet weighs 90 pounds and is only available in white color. The self-contained unit prevents foul odor to leave the washroom and can hold up to fecal and urinary waste of up to three people during a long camping weekend.

However, you need to make a draining hole for the toilet, even if you are using it as a composting toilet. Since it is a non-electric toilet, composting takes longer. You will have to purchase a vent fan to keep away the flies. Also, the installation is a bit tricky and if you don’t assemble it properly, the urine will overflow and out of the unit.


  1. Completely eco-friendly unit
  2. Waterless mechanism
  3. Can hold waste matter of three people for three to four days


  1. Tricky installation
  2. Needs additional vent fan


This composting toilet is our favorite and the one that we have and use. It’s some-what affordable(in comparison) and eco-friendly and comes fitted with everything needed to install into various use cases like tiny homes, vans, and RV’s. It’s also narrower than most RV toilets, so you can easily fit into a tiny space in your RV.