Best Composting Toilet for Boat – Our Top 5 Picks

A composting toilet is perfect for boaters as it is odorless, convenient, environmentally friendly, and makes long boating trips more comfortable. In this article, we list the 5 best composting toilets that are perfect for your boat.

The 5 best composting toilets for boats are as follows:

1. Nature’s Head Self Contained Composting Toilet with Close Quarters Spider Handle Design – Click here to see it on Amazon – Our #1 Top Pick!
2. Nature’s Head Dry Composting Toilet with Crank Handle – Click here to see it on Amazon
3. Separett Villa DC/AC Composting Toilet
4. Sun-mar Excel Non-Electric Self-Contained Toilet
5. Sun-Mar Compact Self-Contained Composting Toilet

By law, all boats that operate in US waters have a Marine Sanitation Device that houses human waste until it can be transferred. Also, all inland freshwater lakes and Great Lakes are “No Discharge Zones”. Having a composting toilet will guarantee a comfortable, safe, and hygienic boat trip.

Read on to learn more about the best composting toilets for your boat, including the features for each.

Also, we hope you find the links here useful. We may get a commission if you purchase something through a link on this page, so thank you!

Also, for an excellent composting toilet for the boat, take a look at our top pick, Nature’s Head Self Contained Composting Toilet with Close Quarters Spider Handle Design:

Click here to see it on Amazon.

Best Composting Toilet for Boat – Our Top 5 Picks

1. Nature’s Head Self Contained Composting Toilet

The Nature’s Head Self Contained Composting Toilet with Close Quarters Spider Handle Design is an excellent composting toilet for boats of all types.

Click here to see it on Amazon.

It is a great investment that provides durability and ease of use. It is built with stainless hardware that disassembles in seconds so emptying it is a breeze.

Nature’s Head Self-Contained Composting Toilet’s latest design comes with a fully elongated seat for maximum comfort. It weighs only 28 pounds and uses only 12 volts.

Despite the urine separator needing to be emptied every two days, Nature’s Head Self-Contained Composting Toilet can be used in harsh environments, complete with a ventilation fan that removes unpleasant odors.

2. Nature’s Head Dry Composting Toilet with Crank Handle

The Nature’s Head Dry Composting Toilet with Standard Crank Handle is a dependable variant that comes with a hand crank agitator that speeds up the decomposing process of solids.

Click here to see it on Amazon.

Like the previous Nature’s Head model, this toilet is a breeze to set up and dismantle.

It includes a 5’ vent hose and a 12-volt power plug. It’s boater friendly and environmentally friendly. It weighs only 27 pounds, half the price for the top-of-the-line toilets, while providing the same durability.

3. Separett Villa DC/AC Composting Toilet

If you are looking for a lightweight composting, waterless, urine-diverting, off-grid toilet, then the Separett Villa Composting Toilet is the one for you.

Click here to see it on Amazon.

Though the brand hasn’t made much of a name for itself in the composting toilet industry, it still provides a durable, compact, and effective model for boaters.

The downside to this model is its scarcity in supply. Though it is perfect for small spaces and long boat trips, its price is for sure on the higher end. Villa is one of the most expensive composting toilets, but the features and excellent design may make the price worth it for you.

4. Sun-mar Excel Non-Electric Self-Contained Toilet

90 pounds of power makes the Sun-Mar Excel Non-Electric Self-Contained Toilet perfect for off-the-grid trips. It uses no electricity or water, making it the perfect eco-friendly companion on any boat.

Click here to see it on Amazon.

Like the others on this list, it has a recessed handle to help the composting process.

The Sun-Mar Excel does not use any water and has separate bins for both liquids and solids. It does not require any electricity, so it is perfect for remote areas. Its compact design also makes it great for small spaces.

However, some reviewers have cited that the overflow drain tends to clog due to debris. This Sun-mar toilet is one of the best composting toilets for boat heads.

5. Sun-Mar Compact Self-Contained Composting Toilet

The Sun-Mar Compact Self-Contained Composting Toilet is 100% eco-friendly and non-polluting, with a low-profile design that compliments any boat head.

Click here to see it on Amazon.

It uses no water, reducing the expenses. Its compact design does not compromise the durability of the Sun-Mar composting toilet. Complete with a recessed handle for bio-drum that hastens the composting process.

Unfortunately, the Sun-Mar composting toilet has small storage that can only accommodate 1 adult. The humming it produces tends to annoy some users.

Its durable and elegant design is highlighted by its ability to eliminate odor without using any water. This isn’t my favorite pick on the list, but the small, compact size is the one feature that you may like.

Types of Composting Toilets

The two types of composting toilets are self-contained and remote or central composting.

1. Self-Contained Composting Toilets are systems where both the toilet and composting system are housed together. It is advantageous when the expected usage is limited. It is best on boats, especially because they are easily cleaned and transferable.
2. Remote or Central Composting Toilets are a lot more complex and require some energy consumption.

Benefits of a Composting Toilet

Eco-friendly

Composting toilets allow solids to undergo the natural process of decomposition, meaning there are no chemicals involved. The process allows all the nutrients in solids to be untampered, which means it is great for the environment. Who wouldn’t want to do their part in helping Mother Earth?

Easily Used

There isn’t much to worry about with composting toilets. Using them is as easy as regular toilets. Composting toilets have two chambers that hold the liquids and solids separately. This is to allow the solids to decompose naturally. The solids need to be kept dry while the liquids can be emptied out naturally.

More Space

Composting toilets don’t take up too much space. They are often built as a single unit that can be easily installed on your boat. This means more space for you to move around in. Since solids break up naturally, they will consume less space in your holding tank. So you don’t need to worry about emptying them out too often.

Odorless

When you step on many boats, you may notice a distinct stench. You may think that this is how boats just smell, but this is most often due to poor sanitation choices. Composting toilets have a vent that will take care of the odors of all your residuals and even speed up the active decomposition of solids.

Lightweight

Composting toilets normally add 10 pounds of weight when it needs to be emptied out. Compared to a conventional toilet that contains 15-18 gallons of waste, composting toilets are obviously lighter and ergonomic.

Conclusion – Best Composting Marine Toilet

Composting toilets are a great investment for any boater; the only thing you need to do is figure out which one would work best for you and your boat.

A great boat trip depends on the comfort, safety, and sanitation of your boat. Having a trusty composting toilet on your boat trips helps provide you with peace of mind, and as a bonus, helps the environment.

Best Composting Toilet for Boat – Our Top 5 Picks:

1. Nature’s Head Self Contained Composting Toilet with Close Quarters Spider Handle Design – Click here to see it on Amazon –Our #1 Top Pick!
2. Nature’s Head Dry Composting Toilet with Crank Handle – Click here to see it on Amazon
3. Separett Villa DC/AC Composting Toilet
4. Sun-mar Excel Non-Electric Self-Contained Toilet
5. Sun-Mar Compact Self-Contained Composting Toilet

Any of the toilets on this list would make an excellent addition to your boat. A composting toilet is not only more efficient but is great for nature – a win-win!