Best Composting Toilet for Boat-Top 5

best composting toilet for boat

Do you love boat trips as much as we do? Then probably you would understand how messy it is to go number one or number two on boats.

You should know that composting toilets are the ultimate choice for boats. You no longer have to avoid boating trips if you are worried about toilet issues. You’ll be surprised to know that these composting toilets are sanitary, environment friendly, and comfortable. 

Now you can spend more time doing activities on the boat rather than banging your head on some plumbing issue. You can set these composting toilets for boats without much hassle. The best part is that they’re compact and almost maintenance-free.

You will surely need some help while buying one of these. This article will guide and answer all the questions about buying a composting toilet. You can check out our top 5 picks for the best marine composting toilet and choose one for yourself. 

These are our top 5 picks for composting toilet for boat:

  1. SereneLife Road Tripping Toilet – The best value composting toilet
  2. Porta Potti White Thetford Corp – The best overall composting toilet
  3. Natures Head Self-Contained Composting Toilet – Honorable mention
  4. Camco Standard Portable Travel Toilet
  5. Zimmer Portable Composting Toilet

Best Composting Toilet for Boat-Top 5

To save you the extra work, we’ve tried to break down all the toilets’ pros, cons, and features. You will certainly have no problem drawing a comparison between any of the products. Check out these top marine composting toilets and decide for yourself.

1. SereneLife Road Tripping Toilet – The Best Value Composting Toilet

The SereneLife is our top composting toilet due to its price-effectiveness and brilliant features. This composting toilet is not only a marine composting toilet, but you can use it in campsites and mobile homes as well. This toilet is a bang for the buck with so many exceptional features.

This composting toilet is all set to make your boat rides worry-free and fun. If you indulge in a boating trip very often, you will find the 5.3-gallon tank to be extremely helpful.

The toilet is not only reasonable, but it’s user-friendly and easy to install. The big tank prevents you from making unnecessary stops during the boar tide.

The lightweight material used to produce this toilet makes it a little tricky to clean this thing. Thankfully, the rotating spout in this toilet is splash-free.

You would not have many troubles while emptying the waste. You will have an odor-less and a clean time to clean this toilet – and the splash-spout deserves credit for that.

SerenLife has included an easy-to-go packing case that is all prepared to accompany you in boating, hunting, and all outdoor activities. The SereneLife composting toilet is one of the best marine composting toilets in the market. Its unique features, topmost quality, and affordability make this composting toilet a great candidate.

The only problem lies with the tiny size of this composting toilet. Don’t expect this toilet to be very comfortable as it’s small and not ideal for all adults. It can easily fit in kids or teenagers, but most grown-ups will find this toilet unpleasant.


  • The price-tag is economical
  • You can install it easily.
  • It is equipped with an extra-large toilet tank.
  • The carrying case makes it easy to carry this toilet.


  • It is incredibly small
  • Cleaning this toilet is not exactly easy.

2. Porta Potti White Thetford Corp – The Best Overall Composting Toilet

What if I told you that you could have a battery-operated composting toilet seat for your next boat ride? That will surely make you plan your boat trip sooner than you expected.

It is no secret that addressing nature’s call in a boat can be unpleasant. This portable toilet from Porta Potti will be a great addition to your boat trips, campsites, RVs, and trucks.

The modern and sleek structure will immediately grab your attention. The seat height is comfortable for all ages and makes you feel homely. 

It features a battery-powered flush that eliminates most of the hassle. This Porta Potti seat has much more than meets the eyes. Keep a check on the tank level with the help of the indicator.

Porta Porti offers smell-free and no-leak features as well. You will not experience any unwanted odor even after a prolonged period of use.

Whether it’s the kids, the old folks, small or big people, they will find this seat very comfy. This composting toilet is undoubtedly the best marine composting toilet of 2020.

The hold down kit is another unique feature that you can find on this composting toilet for boat. The kit ensures that the toilet seat remains at the place when your boat or vehicle meets bumpy waves or rocky roads.

Don’t be surprised to find a damaged electric pump after a short period. The pump motor or the battery-powered flush can fail.

In such a situation, you have to manually pour water into the toilet seat to get rid of the waste. If you plan on buying this Porta Potti, don’t forget to carry a bowl scrub, as the water feature is not very effective.


  • The design is modern
  • The battery-driven flush is powerful
  • The hold-down kit keeps the toilet at the place.
  • This toilet doesn’t leave any smelly odors.


  • The toilet is expensive.
  • The motor is not durable or reliable.

3. Natures Head Self-Contained Composting Toilet – Honorable Mention

The Natures Head composting toilet has earned its position as the honorable mention. The design is reliable and simplistic. It can easily adjust in compact spaces. Thus, it’s ideal for your boat ride as well.

You can use this toilet as a marine composting toilet. This Natures Head Composting Toilet is a complete package for your boat trips. This composting toilet for boat has an impressive online rating. 

If your hands are tied with a tight budget, this might be the perfect composting toilet for you. The toilet seat keeps the odors in check with the innovative design. You will also find the bin emptying process to be hygienic and sanitary in this composting toilet.

Most time on boating trips goes on setting up the plumbing and all, but not with this toilet. The toilet does not require water supply; hence the set-up is uncomplicated.

This unit comes pre-packed with all necessary parts and items. The great size of this toilet can fit not only boats but also RVs and other tight spaces.

This unit is the most enduring composting toilet for boat. When you compare this model to the other composting toilets in the market, this one’s very lightweight and effective. The 5-year warranty period is a bonus for all consumers.

You can use the low volume air circulation fan to keep the smell at bay. This product can perform well in all types of harsh environments, be it the water bodies or the roads.


  • The toilet is easy to install and maintain.
  • It can withstand harsh environments.
  • This versatile toilet is adaptable to all compact spaces.
  • It doesn’t require plumbing.


  • It is more expensive than other toilets.
  • The toilet seat has a complicated cleaning process.

4. Camco 41541 Standard Portable Travel Toilet

The Camco portable travel toilet is the ultimate game-changer. This versatile toilet seat is available in 3 varieties to fulfill an array of requirements.

The Camco 41541 is a cost-effective option that most riders and campers will be able to afford. It holds a detachable 5.3-gallon tank that can be removed for shorter trips.

This Camco toilet is perfect to be used as a marine composting toilet. You will not face any malfunctioning issues with this toilet seat like the ones that use battery or electricity to operate. The toilet set equips a pump flush to rinse the waste from the bowl. The surface built inside the tank makes waste removal a pain-free process.

The side valves are very effective in sealing the odors that come from the toilet seat. The valves are designed to prevent leakage that creates an unwanted mess. The total width of the seat is about 13-inches, which is just right for all ages.

This composting toilet for boat is made with polyethylene. The Camco 41541 has a high weight-bearing capacity of 330 lbs.

The top lid of this toilet has used ABS resin to add sturdiness and durability. You will not experience any foul odors, leakage, or sudden problems with this top-notch portable travel toilet.

These features make this toilet seat one the best composting toilet for boat. You can use this composting toilet seat for both long and short boat rides and road trips.


  • This composting toilet is highly-versatile.
  • It can store a lot of waste and water at a time.
  • The tight seal ensures that the odor does not escape.
  • It is leak-proof


  • The flusher is unreliable.
  • You may need extra water to rinse the bowl.

5. Zimmer Portable Composting Toilet

This unique, small-sized portable composting toilet will become a permanent companion in your boat trips. You will find the toilet seat to be sufficiently sized, and the height is comfortable for both kids and adults.

Zimmer has used polyethylene to deliver a long-lasting, utility-filled toilet seat. The material is not only durable but also aids easy cleaning.

The composting toilet also features two different-sized water holding tanks. You can use the 3-gallon tank for short rides, whereas the 5-gallon will be useful for longer duration trips.

The pump allows up to 50-70 flushes at one go. The freshwater holding tank is surprisingly easy to detach because of the removable caps.

You don’t need too much time to assemble this unit as it comes in one piece. The side valves lock in the foul odor and prevent the water from spilling.

This travel champ can handle even the roughest environments like a pro. The toilet seat measures around 6.5″ x 13.5″ x 12″ (height x width x depth). It weighs only 9.75 lbs, which makes it easy to carry around.

You can use the handles on the side to easily transport and load it into the boat or the vehicle. This porta potty portable toilet is going to forever change the way you use toilets on boating trips. You can rely on Zimmer to efficiently fulfill your morning requirements. 

The only concern that you might have with this portable toilet is the handle. The handle is not designed for rough and tough usage. It is recommended that you use a supply of extra fresh water every time you rinse the bowl. The flush is incapable of clearing the bowl without extra water.


  • The pricing is economical.
  • It is easy to carry this lightweight product.
  • The structure is durable and long-lasting.
  • It is suitable for both short and long trips.


  • The flush cannot rinse the bowl properly.
  • You have to be extra cautious with the sensitive handle.

The Checklist for The Perfect Composting Toilet for Boat

If you have purchased a portable composting toilet before and it was a miserable experience, you’ll need help while picking a new one. This guide is also helpful for people who are first-time buyers. It’s wrong to think that all composting toilets are equal.

In between the trends of a boat ride and road trips, these toilets are facing a surge. More and more demand has led to frequent upgradations and dynamic features in the composting toilet. You need to consider a few of these essential features to make sure you have the right one.


The first question that you should raise is whether it can block the odor or not. Nobody will like to ride a boat where the toilet is spreading a foul smell. Not all composting toilets are designed with odor-blocking features. You should not adjust with a composting toilet that lacks this essential feature. Your composting toilet should have odor-management abilities.

Look for toilet seats that have a double seal. The double seal will not only block the smell, but it will further prevent water-leakage. Nowadays, the majority of composting toilets promise odor-free structure, but a few of them still cannot reflect the same.


Everyone likes to do their morning business most comfortably. Especially if you are traveling with kids, this is a parameter you cannot afford to avoid. All conversations about composting toilets end with comfort.

If it’s not comfortable, it’s not worth it. When we talk about comfort, we mean the seat’s size and height, the flushing mechanism, and so on. 

You have to squat a little extra on the portable composting toilets – that’s something you cannot avoid. Though these seats are not going to feel very homely, it should allow you to have a hassle-free time on it.

Easy Waste Disposal

A lot of people avoid buying composting portable toilets for the sake of cleaning. You should understand the waste-disposing system. You can also check if the toilet comes with a bag that can ease the disposing process. We suggest you take a good look at this feature.

The waste disposal system can make or break the whole scene. The best kind of composting toilets are the ones that can turn human waste into environment-friendly compost.


If you go on boat rides or road trips very often, this should be your topmost concern. You need to keep these portable compact toilets clean and fresh. The toilets should also be easy to maintain.

A toilet seat that does not have a splash-free design will cause a lot of problems during cleaning. If you want to avoid the tedious cleaning process after every trip, choose a simple and easy-going toilet.

Convenient Design

Do you find square toilet seats to be uncomfortable, or do you prefer the oval ones? A portable toilet that has too many complicated features is more likely to malfunction than the simple ones.

You have to be realistic and choose simplicity over too many features. Extraordinary features seem to be attractive at first, but it does not necessarily mean that it’s better.

Avoid fancy, big, and complicated composting toilets. These kinds of toilets pose a lot of troubles while packing and traveling.

You should buy a portable composting toilet that has minimalistic features and a convenient design. A simple design also requires much less maintenance.


This one’s not difficult to figure out when it comes to composting toilets. The composting toilets are mainly used by people who go on boating and camping trips. Not all portable toilets need to be ideal for carrying around.

We’re trying to imply that a few portable toilets are much heavier and bigger than others. The ‘heavy’ portable toilets are not easy to lift and carry around.

The perfect portable composting toilet for boat is the one that is compact and can easily be stored. You surely don’t want to end up having sore arms even before the fun starts. The toilet should be able to fit in vehicles for the sake of carrying around.

The Capacity of The Tank

Most people miss out on this feature. The tank’s capacity that you require also depends upon how many people are going to use it. It is also affected by the duration of your stay.

The brand owners often classify the tank capacity based on use and family size. If you are buying a composting toilet that has an inadequate capacity, then you’ll have to empty it more often.

Frequently Asked Questions

1. Do I have to use separate toilet paper for composting toilets?

Most of the composting toilets are well designed to handle most types of toilet papers. You do not need a different set of toilet papers when you’re hitting the road or the sea. The toilets can break down all the tissues you toss along with the waste.

If you’re still concerned about jamming the toilet, use a single-ply tissue.

2. Where Does the Waste from The Toilet Bowl Go?

The drainage system in the composting toilets is not like the ones at your home. The human waste collected by these toilet seats goes to the tanks. You have to empty the tanks once they reach their maximum capacity. You can find many stations dedicated to emptying the wastes in the tank.

3. How to Empty A Composting Toilet?

You need to be very sensible when it comes to disposing of human waste from composting toilets. The composting toilet for boat is equipped with a tank that holds human waste. Once you get down from the boat or the vehicle, you should look for a dumping station.

Next, you have to unlatch the air-tight tank from the seat and dispose of the station’s waste. It’s best to use store-bought cleaners to pour into the tank after emptying it.

4. What Extra Things Do I Need with A Composting Toilet?

While composting toilets are well-designed to efficiently handle human waste, you can buy a few more things for a better experience. You can purchase biodegradable deodorizing packs which will absorb the foul odor.

You can also buy a small privacy tent if you are going to use these toilets in campsites. Make sure to buy extra wipes, hand sanitizers, toilet paper while buying the composting toilet.

5. Will the composting toilet attract a lot of bugs, flies, and warms?

It’s normal for you to be worried about bugs in a portable toilet. Relax, as most of the composting toilets have an air-tight seal that does not attract a lot of small bugs. You have to make sure that there is no foul smell capable of bringing in buzzing flies. If you still find a few bugs here and there, try to use a deodorizer to get rid of them.

Let’s Wrap Up

If you want to make your boat rides happier and trouble-free, you’re going to need a well-suited composting toilet. The composting toilets we’ve listed in this guide are the best marine composting toilet.

Most of these composting toilets can be used in many places like trucks, RVs, campsites, etc. We understand that choosing a composting toilet can be a daunting task, and that’s where this guide is helpful.

We should eliminate our wastes like regular, civilized people – we’re not barbarians after all. If you’re looking for value on a small budget, we advise you to check out the SereneLife road Tripping toilet.

If none of the products in this guide made it to your list, make sure you consider the checklist before you make a choice. You will have a great boat trip with these comfortable, safe, and sanitary composting toilets.