Ever wondered what happens when nature calls on a boat? Traditional marine toilets can be a stinky problem, polluting our oceans and requiring constant pump-outs. But there’s a better way! Marine composting toilets are becoming a popular choice for boat owners who want to be more eco-friendly and simplify their lives.
Choosing the right composting toilet can feel like navigating a tricky sea. There are different types, sizes, and features to consider. You might be worried about smells, maintenance, or how it all works. Finding the right toilet can be a challenge, but it’s worth it for a cleaner, greener boating experience. Plus, you’ll save money on pump-out fees!
In this post, we’ll explore everything you need to know about marine composting toilets. We’ll break down how they work, compare different models, and discuss the pros and cons. By the end, you’ll have the knowledge to choose the perfect composting toilet for your boat. Get ready to dive in and learn how to make your boating adventures cleaner and more sustainable!
Our Top 5 Marine Composting Toilet Recommendations at a Glance
Top 5 Marine Composting Toilet Detailed Reviews
1. Nature’s Head Self Contained Composting Toilet with Close Quarters Spider Handle Design
Rating: 9.3/10
Looking for a toilet that’s good for the planet and easy to use? The Nature’s Head Self Contained Composting Toilet is a great option. It’s designed to work well in tight spaces. It’s also a big step up from older composting toilet designs. This toilet is made to make your life easier and cleaner. This review will tell you everything you need to know.
What We Like:
- You get amazing customer service. The support is personal and helpful.
- Installation is simple. Anyone with basic skills can do it.
- There is absolutely no bad smell. It needs no maintenance. It also has a 5-year warranty.
- It has a large capacity. Two people can use it full-time and only empty it every 4-6 weeks. Emptying it takes just 5 minutes.
- It is a big upgrade from older composting toilets.
What Could Be Improved:
- We found no cons.
The Nature’s Head Composting Toilet is a solid choice. It is a reliable and eco-friendly toilet option. You won’t regret getting one of these.
2. OGO™ Compost Toilet
Rating: 8.8/10
The OGO™ Compost Toilet is a game-changer for anyone who loves to travel or live off-grid. This toilet uses nature to break down waste. It’s ideal for RVs, tiny homes, vans, boats, and more. The OGO™ is electric and mixes the waste. It also separates urine. This means no more black tanks or dump stations!
What We Like:
- It doesn’t smell bad! The special design stops odors.
- You don’t need chemicals or water. This is great for the environment.
- It’s made in the USA. It’s built strong and can hold up to 550 pounds.
- It’s easy to clean and empty. The solids bin holds waste for 25-30 uses.
- The design is modern and looks good. It’s made for comfort and convenience.
- It’s perfect for many places. You can use it in RVs, vans, boats, and cabins.
What Could Be Improved:
- It needs electricity to work. You’ll need a power source.
- The upfront cost may be more than traditional toilets.
The OGO™ Compost Toilet is a fantastic option for eco-friendly waste disposal. It’s a great choice for anyone looking for a cleaner, greener toilet solution.
3. Compost toilet Separett Villa urine diverting high capacity
Rating: 9.4/10
The Separett Villa urine-diverting composting toilet is a great option for off-grid living. It is a waterless and odor-free solution that is good for the environment. This toilet uses urine separation and a ventilation system. It’s a clean and sustainable choice. The Villa is designed for comfort and built to last. It is a reliable and low-maintenance choice for your home.
What We Like:
- WATERLESS & ODOR-FREE: The toilet uses a smart system to stop bad smells.
- EFFICIENT & ECO-FRIENDLY: It uses a fan to dry waste and get rid of odors. The liquid waste is easy to get rid of.
- SPACIOUS & COMFORTABLE: The toilet has a regular seat. It is built for comfort.
- RELIABLE & LOW-MAINTENANCE: It is made of strong materials. It is easy to use and needs little care.
- DESIGNED IN SWEDEN, SUPPORTED IN THE U.S.: Swedish engineers made this toilet. You can get help and parts in the U.S.
What Could Be Improved:
- The initial cost can be a bit higher than other options.
- Requires electricity for the fan.
Overall, the Separett Villa is a strong choice for anyone looking for a sustainable and comfortable composting toilet. It offers a great balance of features and ease of use.
4. Composting Toilet
Rating: 9.0/10
Looking for a toilet that’s good for the planet? This Composting Toilet is a great choice! It’s perfect for tiny houses, vans, and boats. It’s a waterless toilet that breaks down waste. It uses a special system to compost the waste inside. It also has a heating plate and a fan to keep things clean and fresh. The toilet separates urine from solid waste. This makes it easy to use and eco-friendly!
What We Like:
- Rapid Composting! The unique system breaks down waste quickly. This is different from other composting toilets.
- No Bad Smells! An exhaust fan removes odors. You won’t smell anything!
- Works in Any Weather! The heating plate keeps the composting process going, even when it’s cold or damp.
- Clean and Easy! The urine separation keeps things clean. It’s easy to use every day.
- Eco-Friendly! This waterless toilet saves water and helps the environment.
What Could Be Improved:
- (No cons available for this product.)
This composting toilet is a great option for anyone looking to live more sustainably. It’s a smart and clean way to handle waste.
5. Kohree 5.8 Gal Portable Toilet for Adults: Large Camping Toilet with Detachable Waste Tank
Rating: 9.1/10
The Kohree 5.8 Gal Portable Toilet is a great choice for camping, RV trips, and home use. This portable toilet is designed for adults and is easy to carry. It has a large capacity waste tank and a fresh water tank. It also has a level indicator to let you know when to empty it. The toilet is designed to be leak-proof and odorless, keeping your area clean. It’s easy to clean and can be used in many places.
What We Like:
- Easy to carry and holds up to 440 lbs!
- Large capacity waste tank means fewer trips to empty.
- The level indicator tells you when it’s time to empty.
- It’s designed to be odorless and leak-proof.
- Easy to clean with the special outlet design and water gun.
- It can be used in many different places.
What Could Be Improved:
- It’s a personal hygiene product, so returns aren’t allowed unless there’s a problem.
This Kohree portable toilet is a good option for those who need a portable toilet. It’s easy to use and has many great features.
Sailing Green: Your Guide to Marine Composting Toilets
Want to make your boat a bit greener? A marine composting toilet might be perfect for you! This guide helps you choose the right one.
Key Features to Look For
Choosing a marine composting toilet can seem tricky. Here are some important things to consider:
- Capacity: How many people will use the toilet? Choose a size that fits your needs. A small boat needs a small toilet. A larger boat needs a larger one.
- Composting Process: Some toilets use a rotating drum. Others use a simple chamber. Rotating drums often compost faster.
- Ventilation: Good ventilation is very important. It removes odors and keeps things dry. Look for a toilet with a good vent fan.
- Ease of Cleaning: You’ll need to empty the toilet. Make sure it is easy to clean. Look for easy-to-access parts.
- Power Requirements: Some toilets need electricity. Make sure your boat has enough power. Others are fully manual.
- Installation: Can you install the toilet yourself? If not, find one that is easy to install.
Important Materials
What is the toilet made of? The materials matter!
- Durable Plastics: Most toilets use strong, waterproof plastics. These resist water and wear.
- Stainless Steel: Stainless steel is often used for hardware. It does not rust in the marine environment.
- Compostable Materials: You will need to add a bulking agent. This might be peat moss or coconut coir. This helps the composting process.
Factors That Improve or Reduce Quality
Some things make a toilet great. Other things make it not so great.
- Quality of Materials: Strong, rust-resistant materials last longer. They are better for the environment too.
- Ventilation System: A strong fan prevents odors. It also helps the composting process.
- Ease of Use: A simple design is often best. It makes cleaning and emptying easier.
- Customer Reviews: Read what other boaters say. They will share their experience.
- Warranty: A good warranty shows the manufacturer trusts their product.
User Experience and Use Cases
Using a marine composting toilet is different from a regular toilet.
- How it Works: You use the toilet like normal. After each use, you add a bulking agent. This helps with composting.
- Who It’s For: Composting toilets are great for boaters who want to be eco-friendly. They are also good for boats without holding tanks.
- Use Cases: These toilets are perfect for sailboats and motorboats. They work well for weekend trips or long cruises.
- Benefits: They reduce waste. They also reduce the need for pump-outs. This is good for the environment.
- Maintenance: You need to empty the toilet. You should also clean it regularly. This is usually not a difficult task.
Frequently Asked Questions
Q: What is a marine composting toilet?
A: It’s a toilet that turns human waste into compost. It uses natural processes instead of chemicals.
Q: How does a composting toilet work?
A: Waste mixes with a bulking agent. This allows the waste to decompose. A vent fan helps with this process.
Q: What do I put in the composting toilet?
A: You add a bulking agent after each use. This is typically peat moss or coconut coir.
Q: How often do I need to empty the toilet?
A: It depends on the size and use. Usually, you empty it every few weeks or months.
Q: Is a composting toilet smelly?
A: No, not usually. A good ventilation system removes odors.
Q: Is it hard to install a composting toilet?
A: Some are easier than others. Check the instructions before you buy.
Q: What are the environmental benefits?
A: They reduce waste in the water. They also reduce the need for pump-outs.
Q: Can I use any kind of toilet paper?
A: No, use toilet paper that breaks down easily. Look for septic-safe options.
Q: Where can I put the compost?
A: You can bury the compost on land, away from water sources. Follow local rules.
Q: Are composting toilets expensive?
A: They can cost more than regular toilets. However, they can save money in the long run.
In conclusion, every product has unique features and benefits. We hope this review helps you decide if it meets your needs. An informed choice ensures the best experience.
If you have any questions or feedback, please share them in the comments. Your input helps everyone. Thank you for reading.

I’m the recipe developer and food photographer behind Air Fryer at Tiffany’s. I’m also a wife, mom to two adventurous little boys, registered nurse, and live in the great Midwest. Join me as I show you new ways to use your air fryer that you never knew possible.




