Best Composting Toilet Reviews 2020 | In- Depth Buying Guide

In search for the best composting toilet? A composting toilet is completely different from the usual toilets that are used as it uses very less or no water for functioning. These types of toilets are perfect for places where there is a scarcity of water and power or proper sewer system and sewage treatment plant. The composting toilet system produce compost from the human excretes which can be further used in agriculture or horticulture for the purpose of enrichment of soil. So it is an important aspect of ecological sanitation for resource recovery. In many countries, the composting toilets are widely used in public restrooms as there is very minimal need of water and power.

 5 Top Rated Composting Toilet Reviews


Portable Compost Visa Potty 268 – Best Camping Toilet

Portable Visa Potty 268 Review

The Visa 268 is the ideal friend for camping or any trip where the absence of restrooms bothers you the most. So with this compost toilets, you can carry your restroom along with you as it is efficient and easy to use. It has the best features like the piston-type flush system and a two direct rinse along with level indicator which shows the level of both fresh water and waste holding tanks. So from next time onwards, don’t have to go to open fields in the cold winter night to evacuate yourself.

Key Specs

  • It comes with a replaceable and easy to use piston pump with two-directional rinse which enhances the bowl surface coverage.
  • The bowl is extra deep providing a greater comfort. Lid snaps closed for preventing vibration while on the move.
  • The level indicator shows both the fresh water and waste holding tank level.
  • With the detachable spout storage compartment, it is very convenient to clean
  • The holding tank vent helps in easier cleaning and discharge of waste.


The first thing that comes to mind about an outdoor trip is about the availability of restrooms as it is a natural activity that every person needs to do, but for camping and any other outdoor activities, is hard to get restrooms. Here is the visa potty 268 comes off great advantages. Find below the detailed benefits of the visa potty 268: –

  • Easy To Carry

The portable visa potty 268 is easy to carry anywhere you want where there are no restrooms like camping, treks or any construction or building sites and others. So instead of going outside under the open sky, you can use it.

  • Comes With Indicator

The visa potty 268 comes with a level indicator showing the level of both fresh water and waste holding tanks which help you to get intimated about the time of disposing of the waste. So need to clean the tank in now and then, just refer to the indicator.

  • Easy To Clean

The detachable spout storage compartment makes it easy to clean whenever the time comes as it is shown in the indicator. So just detach the compartment from the potty and empty it in some permissible waste disposal place. The highly gloss and smooth surface makes it easier to clean any spots or stains.

  • Comfort

The visa potty 268 comes with an extra deep bowl which provides a great comfort and the lid snaps closed helps in preventing from vibration during movement.

  • Capacity

The visa potty 268 has the capacity of 24 liters and any strong or heavy built personal can have a comfortable time using this toilet. However, it is suggested not to use it as a seat in the closed lid as an additional chair.


  • Easy to clean and discharge waste
  • High capacity of 24 liter
  • Durable and strongly built


  • Can’t be folded so a bit difficult to carry and storage

So for anyone who loves to travel a lot but hates to go in the open. To evacuate self, the visa potty 268 is the best companion as a portable restroom.

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Thetford 92360 Porta Potti 550E Curve – Ultimate Portable Composting Toilet

Thetford 92360 Porta Potti Review

Porta Potti Curve portable toilet is an amazing support system for getting privacy and convenience of using the restroom instead of going under the open sky. Trekking, hiking, picnic or any other activities which need to spend time outside the house may not always come with the option of the restroom, so the Thetford 92360 Porta Potti 550 E-Curve portable rv composting toilet comes to rescue.

Key Specs

  • It has Sleek and homelike design providing with a comfortable seat height,
  • The bowl size is increased
  • It comes with ad integrated toilet paper holder
  • Battery-powered flush controls, the controls are hidden
  • The holding tank level indicator shows the level of both fresh water and waste tanks
  • The water tank comes with an Improved carrying handle
  • Optional hold down kit


  • Size

The dimension of the Porta Potti 550E Curve is 17.8*15.5*17.6 inches with a larger waterless toilet bowl size along with home-like design features providing a comfortable seat height. It is highly durable and easy to use and clean.

  • Flush

It is equipped with a battery power flushed with the hidden controls. You can even use manual water instead of flush if you want.

  • Capacity

The Porta Potti Curve marine compost toilet comes with a higher capacity than the previous models. It can hold 15.9 Liter of fresh water and 20.8 Liter of waste water. It has the capacity of the average of 56 flushes.

  • Indicator

The Porta Potti 550E Curve comes with a level indicator showing the level of both fresh water and waste tanks which help to get informed about the correct time for disposing of the waste. So need to clean the tank in now and then, just keep a watch on the indicator.


  • It comes with a hidden toilet paper holder.
  • There is an optional hold down hold down kit which is seldom included in the waterless toilet systems.
  • The water tank handle doesn’t cut into your hands, thus easier to carry.
  • Clear indicators show the level of both fresh water and waste tank
  • Easy to setup and clean.


  • It can’t be folded. You can separate the chamber, though.
  • The instruction in the user manuals is not mentioned in details

It is a registered trademark of Thetford Corporation and is the world’s leading brand of composting toilet system. So, wherever you’re on the road, at home or on the water, you will never feel the absence of a toilet with Porta Potti. Sanitary, odorless and leak proof. It is available in several sizes and best home composting system with a wide range of applications.

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Camco 41541 Portable Toilet – Off Grid Composting Toilet

Camco 41541 Portable Toilet Review

Camco’s 5.3-gallon portable is the best composting toilet for tiny house which is designed for camping, boating or any other recreational activity outside the home where you may face the issue of no restrooms. Its sturdy polyethylene construction is compact and lightweight. The capacity of the holding tank is 5.3 gallon which is detachable and comes with a sealing slide valve to lock in odors and protect against leakage. It includes two side latches to secure the tank to the toilet and a carrying handle for easy transport. The Camco’s 5.3-gallon portable comes with an easy to use bellow-type flush and pull slide valve for easy flushing. The toilet measures 16.38″H x 13.75″W x 16.13″D. It weighs 11.5 lbs empty. Included is a packet of Camco’s TST biodegradable toilet chemical.

Key Specs

  • 5.3-gallon holding tank is detachable
  • Sealing slide valve locks in odors and protects against leakage
  • Comes with two Side latches which secure the tank to the toilet
  • Bellow-type flushes for easy flushing.
  • Sturdily built with polyethylene construction making it compact and lightweight.
  • While empty it weighs 11.5 lbs.
  • Comes with one year warranty.


  • Larger Tank

It comes with a 5.3-gallon detachable tank, so you just need to remove it and dispose of the waste. It has enough room to accommodate the waste of the whole family for a longer period, that means, you can enjoy a hassle-free family trip without thinking about the wastes.

  • Light Weight

Carrying a heavy portable toilet along with you for any trips or outings is a bit difficult task. This waterless toilet systems weighs only 11.5 lbs which is much lighter to carry conveniently.

  • Protection

The sealing slide valve helps to lock the odors and also protect from any leakage. So while traveling, no need to think about the bad odor coming from the potty.

  • Built

It Measures 16.38″H x 13.75″W x 16.13″D. Please note: Total Seat Width is 13 inches. Seat dimensions (inside) are 8.5″W x 9″D. It is built with sturdy polyethylene construction which makes it more compact and lightweight.


  • It is much lighter in weight thus easier to carry and travel.
  • It is strongly built with polyethylene construction.
  • Comes with a capacity of 5.3 gallons.
  • One year warranty


  • Can’t be folded, so it’s a bit difficult for storage and carrying.
  • Not all prefers carrying a tank full of the human potty and dispose of it.

So for now onwards there is no need to worry about going outside in the dark winter night to empty yourself, just setup your Camco 41541 Portable Toilet in your tent and keep the private things within the tent only.

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Thetford 92853 Porta Potti – Great Composting Toilet For RV

Thetford 92853 Porta Potti Review

The Thetford Porta Potti 550P Sanitation Device is a great help in taking care of the daily basic need. The flush system is equipped with battery power, thus no need for any external power source. The flush level is also placed in an easy to reach location. It also comes with an indicator to keep you informed about the level of fresh and waste water and also has integrated toilet paper holder.

Key Specs

  • Easy-to-read holding tank level indicator shows the level of both fresh water and waste tanks
  • It’s easy to empty the waste tank with the rotating pour-out spout
  • No chance of leakage and odors with the help of sealed valves.
  • Removable seat and cover for easy cleaning
  • Piston pumps flush which is battery operated.
  • Comes with 1-year warranty.


  • Capacity

It has the capacity of holding 15.9 liters of fresh water and 20.8 liters of waste water, so just refill the fresh water and clean the waste tank once and you can enjoy a long family trip as it can easily accommodate the whole family for a longer period. It has 56 flush capacities.

  • Indicator

With Porta Potti 550P, there is nothing to worry about cleaning the wastage as it comes with an easy to read indicator showing the water level of both fresh water and waste water.

  • Comfortable

The oval shape seat provides a great comfort like the home potty, and it also has the height of 16.5 inches which is same as the residential one.

  • Size

The dimension of the Porta Potti 550P is 17.5*17*16 inches with a larger toilet bowl size along with home-like design features providing a comfortable seat height. It is highly durable and easy to use and clean.


  • The Higher capacity of 20.8 liters of wastewater.
  • Average flush capacity – 56
  • Battery operated piston flush pump.


  • Can’t be folded.
  • The manual instructions are not of much help.

Porta Potti 550P Portable Toilet is a great way to get the feeling of using residential toilets even when you are outside for trip or any other purposes as it comes with high comfort and advanced features.

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

Sun-Mar Excel Non-Electric Reviews

The Excel was the first ever self composting toilet which was approved and certified by National Sanitation Foundation (NSF), so it means that the Excel is equipped with all kind of required standards for good composting toilets. Only the Sun-Mar self-contained units are approved for residential and cottage use by NSF, whose Standard #41 is the toughest composting performance standard in the world. It is the highest capacity self-contained toilet which is non-electrical and mostly preferred for heavy cottage and continuous residential usage.

Key Specs

  • It doesn’t require electricity to run so a best one for application off the grid
  • Low profile unit complements any bathroom
  • No need of water.
  • Non-polluting
  • It has variable diameter bio-drum with recessed handle for processing compost


  • High Capacity

Sun-Mar Excel Non-Electric Self-Contained Composting Toilet has enough capacity to support any heavy cottage and continuous residential usage. It has gone through the toughest composting standard of Standard # 41 by the NSF. The Excel is also the first self-contained composting toilet to get certified by NSF for cottage and residential usage.

  • Energy Saving

The Excel doesn’t require either electricity or water for operating, thus providing a great saving in energy. It reduced the use of water to 20 % to 50 % thus savings in the money.

  • Odor Issue

A 2” vent is attached at the top of the Excel in the back, you can also use an electrical fan, but it is not required much. Normally the Excel can evaporate all liquids without creating any odor, but still, as a precautionary, a 1” emergency drain is fitted at the rear.

  • Certified

To approve for residential use, the Excel was tested by the National Sanitation Foundation (NSF) at maximum capacity for six continuous months, and during this testing phase the Excel produced no odor and produced a clean and safe compost. Only Sun-Mar self-contained units are certified and listed for residential and cottage use by NSF, whose Standard #41 is the toughest composting performance standard in the world.


  • Savings in power and water
  • Certified by NSF
  • Can be used in any bathroom


  • Not a well known or used product.
  • Needs manual intervention for composting.

This is the best option to use in places where there is a scarcity of water and power as it doesn’t need any of them to operate and along with this, it is even certified by NSF for cottage and residential usage also.

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Benefits Of Using The Good Quality Composting Toilet

  • Reduction Of Water Usage

A composting toilet is a great way to significant savings in water storage in the household and the best solution for places which have the scarcity of water. The water storage cost can be reduced to at least 50 % by using right composting toilet along with other household water reduction techniques.

  • No More Odor Problems

With the suction air flow system in most compostable toilet, the chance of odor in the restroom and house is highly reduced as the air flow system constantly works as an extraction fan.

  • Reduced Maintenance Costs

The local authorities constantly pay and now increasingly paying rebates to the residents who are using quality composting toilets. The sewage and water rates cost a huge amount per year and also have annual maintenance cost which is compulsory. Thus the composting toilets are a great help to reduce all these issues.

  • No Need of Plumbing

Being waterless, there is no need of plumbing or water connection which results in the quick installation of the unit.

  • Reduced Need of Area

As with composting toilets, there is no need of construction of septic tank, thus saves a good amount of area in households and other public places.

  • Recycling

The composting toilet can easily recycle the household wastages like food scraps, paper, lawn clippings, and others as they can easily be composted back through the toilet. If you choose to put in a reed bed gray water systems, the annual clippings can also be composted. There is very less amount wastage in this system.

  • Difficult Locations

The composting toilet is not depended on any particular location as it can be easily installed anywhere like rocky sites, no water storage, swampy grounds or others whereas in the case of other systems, it might not be possible to install. All the complicated locations can easily be adjusted with minor changes for installing composting toilets.

How To Choose The Best Composting Toilet

To choose the right small composting toilet, you first need to know about what is a composting toilet? then its different types of composting toilets that available in the market:

  • Self Contained Composting Toilet

In this toilet and composting system are housed together in a single unit. This type of toilet is normally installed in places where the usage will be quite limited. This is not suitable for heavy usage.
Small cabins or cottages which are rarely used or are used mostly on weekends are the best situations for a self-contained unit. Many cabin owners also use a basic composting toilet in the guest house or even keep a small one that is mobile for use when there are extra guests.
A simple, self-contained composting toilet comes to a great help when there is any maintenance going on in the house or the restroom. This one comes a great deal in that situations and acts as an efficient additional source of the restroom.

  • Remote or Central Composting Toilet

In this, the composting system is separate from the main toilet and placed under the floor or outside the cottage. This type of toilet is more complex and is usually installed in places where the expected usage is very higher volume. Larger cottages and year-round properties are ideal for a central composting toilet.

A central composting toilet is like a two piece system thus offering the look of a traditional looking toilet. The central composting toilets come in two different types like:-

  • 1 Pint Flush

This is the most common and popular type. It looks like a traditional toilet due to the flushing liquid and toilet water seal.

  • Waterless

This type is best for places where there is water shortage as it requires no water to operate and instead of water, air suction is used.

  • Installation Requirements

So before you buy the top quality composting toilet, it is very important to decide which type of toilet suits you and your locality the most and also about the process of installing the same. Some toilets may require electricity and water connection and other things. So get the details in prior and plan accordingly about choosing the top rated composting toilets. Go here to find out the best toilets available on the market.


A composting toilet is a great way to save valuable sources of water and electricity as it requires very little or no power or water to operate. Over that, it is a great way to contribute towards the environment by helping in recycling. The procedure of composting toilets in the recycling of human wastes is safe as it eradicates and reduces potential phytotoxins. These types of composting toilets are best suitable for parks, rural areas and others that lack a suitable supply of water and sewage system. It also reduces and even eliminates the need for a septic tank and reduces the environmental footprint. So get the best composting toilet by reading this buying guide.

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