
Porta Pottis are portable toilets that can be used on boats. They are lightweight and easy to carry, with a waste-holding tank that can be emptied without needing to dismantle or clean separate parts. The tank features a level indicator to warn you when it needs to be emptied, and an integrated rotating emptying spout to make the process as simple as possible. The tank can be manually emptied, or at a pumping station.
| Characteristics | Values |
|---|---|
| Size | Compact enough to carry aboard small boats |
| Waste-holding tank | Lightweight, with a level indicator to warn when it needs emptying |
| Emptying | Easy, with a rotating emptying spout that requires no dismantling or cleaning of separate parts |
| Vent button | Prevents unpleasant splashing during emptying |
| Stopper | Holds the emptying spout in position, making re-attachment of the two tanks easier |
| Air pump | Provides pressure |
| Flushes | Thetford's Porta Pottie MSD has a four-gallon water tank that provides 56 flushes between refills |
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What You'll Learn

How to empty a boat porta potti
Emptying a boat porta potti is a simple process. First, you need to pivot the spout, uncap it, and open the air vent. Then, you can pour the waste into a toilet at home. It is recommended to follow up with a few rinses until the water you pour out runs clear. You can also use a deodorizer to help control odour.
The Porta Pottis are equipped with a level indicator to warn you in advance when the waste-holding tank needs emptying. The waste-holding tank is lightweight and easy to carry. It features a unique integrated rotating emptying spout, making emptying easy. There is no need to dismantle or clean separate parts. The vent button on the waste-holding tank prevents unpleasant splashing during emptying. The stopper on the waste-holding tank holds the emptying spout in position, making re-attachment of the two tanks easier.
For longer trips, a portable toilet that can be emptied at a pumping station can save time and mess. Thetford’s Porta Pottie MSD is a larger portable toilet that can be installed permanently. It has a four-gallon water tank that provides 56 flushes between refills. It also has a five-gallon holding tank that can be sealed to control odour. This tank can be emptied at a marina or RV pump-out station.
On smaller boats, a compact porta potti can be carried on board. While these may not be as comfortable to use, they are convenient for emergencies.
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How to clean a boat porta potti
To clean a boat porta potti, you should first empty the waste using a vacuum hose and dispose of it properly. Next, wipe down the inside with specialty surface cleaners to remove dirt, germs, and bacteria. Replace the chemicals in the holding tank to eliminate odours and break down waste. Wear personal protective equipment, such as gloves, masks, and eye goggles to protect against bacteria and chemicals.
It is important to clean your porta potti at least once a month, paying particular attention to high-touch areas like door handles, hand sanitiser dispensers, and toilet paper holders.
To leave the porta potti clean for the next user, you can give the bowl a spritz of cooking oil from a pressurised can.
When emptying the holding tank, pivot the spout, uncap it, open the air vent, and pour the waste into a toilet at home. Rinse the tank until the water you pour out runs clear.
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How to know when a boat porta potti needs emptying
Porta Pottis are equipped with a level indicator to warn you when the waste-holding tank needs emptying. When it's time to empty the tank, simply pivot the spout, uncap it, open the air vent, and pour the waste into a toilet at home. You can then follow up with a few rinses until the water runs clear.
Thetford’s Porta Pottie MSD is a larger portable toilet that can be installed permanently. It features a five-gallon holding tank with a sealed holding tank to control odour. This tank can be emptied at a marina or RV pump-out station.
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How to manually empty a boat porta potti
To manually empty a boat porta potti, follow these steps:
- Check the level indicator to see if the waste-holding tank needs emptying.
- Pivot the spout and uncap it.
- Open the air vent to prevent splashing.
- Pour the waste into a toilet at home.
- Rinse the tank until the water runs clear.
- Refill the water tank.
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How to use a boat porta potti on a larger boat
Porta Pottis are lightweight and easy to carry. They are equipped with a level indicator to warn you when the waste-holding tank needs emptying. The tank is easy to empty: simply pivot the spout, uncap it, open the air vent, and pour the waste into a toilet. You can then rinse the tank until the water runs clear.
For a larger boat, you may want to opt for a larger portable toilet such as Thetford's Porta Pottie MSD, which can be dedicatedly installed. This model features a four-gallon water tank that provides 56 flushes between refills. If you want to go days between servicing, a five-gallon holding tank is also available, which features a sealed holding tank to control odour. When you reach a marina or RV pump-out station, you can empty the tank and refill the water. In between stations, the tank can also be manually emptied.
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Frequently asked questions
The Porta Potti is lightweight and easy to carry.
The Porta Potti has a level indicator to warn you when the waste-holding tank needs emptying.
The waste-holding tank is easy to empty. Simply pivot the spout, uncap it, open the air vent, and pour the waste into a toilet at home.
The Porta Potti comes in a range of sizes. The Porta Pottie MSD is a larger portable toilet best suited for a dedicated installation, while the Wild Stool for Yeti Load Out is compact enough to be kept on a 20-foot centre console for emergencies.











































