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10 Best Composting Toilets 2025 in the United States
#1
Winner
OGO™ Compost Toilet | Best Nature's Compost Toilet | RV, Tiny Houses, Vans, Boats | Electric Mixing | Urine Separating | Urine Level Sensor | No Black Tanks No Dump-Stations
The OGO™ Compost Toilet stands out as a practical solution for those who live in RVs, tiny houses, boats, or off-grid environments. Its urine separating feature is a highlight, effectively preventing odors and eliminating the need for chemicals or water, which is a big plus for users looking for a more eco-friendly option. The toilet's capacity allows for 25-30 uses for solid waste and 2.4 gallons for liquid, which is reasonable for its intended use in smaller spaces.
Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!#2
Nature's Head Self Contained Composting Toilet with Close Quarters Spider Handle Design
The Nature's Head Self Contained Composting Toilet is designed for those seeking an efficient and odor-free solution for waste management. One of its standout strengths is its large capacity; it can serve two people full-time, allowing for easy emptying every 4-6 weeks, which is quite practical for households or camping situations. The installation process is also user-friendly, making it accessible for individuals who are reasonably handy around the house. Plus, the manufacturer's commitment to customer service ensures support if needed, which can be reassuring for first-time users.
Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!#3
Compost toilet Separett Villa urine diverting high capacity
The Separett Villa 9215 is a waterless composting toilet designed for off-grid use, making it an excellent choice for those looking to minimize water usage or who live in remote areas. One of its strengths is its high capacity, allowing it to handle significant waste while efficiently diverting urine, which promotes better composting. The wall-mounted design saves space, a plus for smaller bathrooms or installations where floor space is limited.
Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Top 10 Best Composting Toilets 2025 in the United States
#1
Winner
9.8 score
OGO™ Compost Toilet | Best Nature's Compost Toilet | RV, Tiny Houses, Vans, Boats | Electric Mixing | Urine Separating | Urine Level Sensor | No Black Tanks No Dump-Stations
OGO™ Compost Toilet | Best Nature's Compost Toilet | RV, Tiny Houses, Vans, Boats | Electric Mixing | Urine Separating | Urine Level Sensor | No Black Tanks No Dump-Stations
Capacity: 2.4 Gallons
Type of System: Compost Toilet
Ventilation: Important for performance
Ease of Maintenance: Removable solids bin and urine bottle
Power Source: Electric
Size and Design: 15"L x 16"W x 18.4"H, Modern
Chosen by 1391 this week
Nature's Head Self Contained Composting Toilet with Close Quarters Spider Handle Design
Nature's Head Self Contained Composting Toilet with Close Quarters Spider Handle Design
Capacity: serves two people, empties every 4-6 weeks
Type of System: Self Contained Composting Toilet
Ventilation: zero odor
Ease of Maintenance: regular maintenance necessary
Size and Design: 20.98"D x 19.02"W x 20.98"H
Compost toilet Separett Villa urine diverting high capacity
Compost toilet Separett Villa urine diverting high capacity
Capacity: high capacity
Type of System: waterless composting toilet
Ventilation: pipe, insect net, rain cap
Ease of Maintenance: easy to clean, simple install
Power Source: 12V / 110-240 V
Size and Design: compact, wall-mounted, 34 pounds
TRELINO Composting Toilet Evo S Gray, Portable Toilet for Camping & Outdoor, Odorless, 1.2 gal & 1.6 gal Capacity, 13 x 15.4 x 11.7 inches
TRELINO Composting Toilet Evo S Gray, Portable Toilet for Camping & Outdoor, Odorless, 1.2 gal & 1.6 gal Capacity, 13 x 15.4 x 11.7 inches
Capacity: 1.2-gallon urine, 1.6-gallon solid
Type of System: Composting
Ventilation: Separation and drying
Ease of Maintenance: Odorless, no chemicals or water
Power Source: None
Size and Design: 15.35 x 12.99 x 11.65 inches
Thinktank Waterless Toilet White
Thinktank Waterless Toilet White
Type of System: Urine-diverting system
Ventilation: Separate air intake and exhaust
Ease of Maintenance: Easy to clean, minimal exposure
Power Source: No batteries required
Size and Design: 23.2"D x 18"W x 19"H
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Compost toilet Separett Tiny with urine container for RV, van, camping, and boats
Compost toilet Separett Tiny with urine container for RV, van, camping, and boats
Type of System: composting toilet
Ventilation: built-in system
Ease of Maintenance: straightforward
Size and Design: compact, privacy-focused design
Cuddy Lite Layering Compost Toilet - for Camping, Boats, RVs, Campervans & Tiny Houses - Urine Full LED Indicator, Fan, Carbon Filter, Urine Diverting Solids Cover, Easy Clean - Affordable & Compact
Cuddy Lite Layering Compost Toilet - for Camping, Boats, RVs, Campervans & Tiny Houses - Urine Full LED Indicator, Fan, Carbon Filter, Urine Diverting Solids Cover, Easy Clean - Affordable & Compact
Capacity: 3.9 gallons
Type of System: Waterless system
Ventilation: Carbon filter, 12V fan
Ease of Maintenance: Easy-to-clean bin, practical handles
Power Source: 12V power source
Size and Design: 16.8"D x 16.3"W x 15.1"H
Nomad by OGO Urine Separation Toilet. Best Commode for Off-Grid & Outdoor Camping, RVing, Boating, Road Trips and Recreational Activities. No Water Flush. No Chemicals. Boondock Ready.
Nomad by OGO Urine Separation Toilet. Best Commode for Off-Grid & Outdoor Camping, RVing, Boating, Road Trips and Recreational Activities. No Water Flush. No Chemicals. Boondock Ready.
Type of System: Urine separation
Power Source: Passive
Size and Design: 15.4"D x 13"W x 12.38"H
SUN-MAR GTG TOILET | Portable Toilet, Compost Toilet for RV
SUN-MAR GTG TOILET | Portable Toilet, Compost Toilet for RV
Type of System: composting
Ease of Maintenance: battery-free
Power Source: none
Size and Design: 7.8 x 6.2 x 9.45 inches
#10
7.5 score
Cuddy Portable Composting Toilet for Camping & Off-Grid Living - Chemical Free, Waterless, Self-Contained System - 3.9 Gallon Capacity, Easy Clean, Odor-Free Fan & Filter, Patented Extending Agitator
Cuddy Portable Composting Toilet for Camping & Off-Grid Living - Chemical Free, Waterless, Self-Contained System - 3.9 Gallon Capacity, Easy Clean, Odor-Free Fan & Filter, Patented Extending Agitator
Type of System: Portable Composting Toilet
Ventilation: Integrated fan, carbon filter, external vent
Ease of Maintenance: LED indicator, handles on solids bin
Size and Design: 16.8"D x 15.1"W x 16.3"H, White
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Buying Guide for the Best Composting Toilets
Choosing the right composting toilet can be a bit overwhelming, but with the right information, you can find the perfect fit for your needs. Composting toilets are an eco-friendly alternative to traditional flush toilets, converting human waste into compost through a natural decomposition process. When selecting a composting toilet, it's important to consider several key specifications to ensure it meets your requirements and provides a comfortable and efficient experience.CapacityCapacity refers to the amount of waste a composting toilet can handle before it needs to be emptied. This is important because it determines how often you will need to maintain the toilet. Smaller capacities are suitable for occasional use, such as in a cabin or tiny house, while larger capacities are better for full-time use in a household. To choose the right capacity, consider the number of users and the frequency of use. For example, a toilet with a capacity of 20-30 gallons might be sufficient for a couple, while a larger family might need a capacity of 50 gallons or more.
Type of SystemThere are two main types of composting toilet systems: self-contained and central (or remote) systems. Self-contained systems have the composting unit integrated into the toilet itself, making them compact and easy to install. These are ideal for small spaces and occasional use. Central systems, on the other hand, have a separate composting unit located away from the toilet, often in a basement or outside. These systems are better for larger households and continuous use, as they can handle more waste and require less frequent emptying. Choose the type based on your space availability and usage needs.
VentilationVentilation is crucial in a composting toilet to control odors and ensure proper decomposition. A good ventilation system will include a fan and vent pipes to direct air flow and remove moisture. This helps to keep the composting process aerobic, which is essential for breaking down waste efficiently and preventing unpleasant smells. When evaluating ventilation, consider the ease of installation and the effectiveness of the system. If you are sensitive to odors or plan to use the toilet in a small, enclosed space, prioritize models with robust ventilation features.
Ease of MaintenanceMaintenance involves emptying the compost, cleaning the unit, and occasionally adding bulking material like sawdust or peat moss. The ease of maintenance can vary significantly between models. Some toilets have removable trays or bins that make emptying simpler, while others may require more effort. Consider how often you are willing to perform maintenance tasks and choose a model that aligns with your comfort level. If you prefer minimal maintenance, look for features like automatic mixing or larger capacity units that need less frequent attention.
Power SourceComposting toilets can be non-electric or electric. Non-electric models rely on natural ventilation and manual operation, making them ideal for off-grid locations or areas without reliable electricity. Electric models use power for ventilation fans, heating elements, or mixers, which can enhance the composting process and reduce odors. However, they require a power source, which may not be suitable for all locations. Choose a power source based on your location and the availability of electricity. If you are in a remote area, a non-electric model might be more practical.
Size and DesignThe size and design of the composting toilet should fit comfortably in your space and complement your aesthetic preferences. Consider the dimensions of the toilet and ensure it will fit in the designated area without obstructing movement. Design elements like seat height, shape, and color can also impact your comfort and satisfaction. If you have limited space, look for compact models. For a more traditional look, choose designs that resemble standard flush toilets. Your personal comfort and the overall look of your bathroom should guide your decision.