SereneLife Outdoor Portable Toilet SLCATL320 Piston Flush

Editor rating


User's rating

239 reviews


  • This unit has the rotating spout to empty waste water.
  • Large tank capacities.
  • Wastewater level indicators for quick assessment.
  • The waste spout is bright orange making it easily identifiable.


At this price and with these features, it's hard to note any cons.


The Serenelife SLCAT320 is a proven performer and is the most popular with our readers.  It's also a best seller on Amazon which further confirms its role in outdoor camping and road tripping.

A great mid-range unit with more than just the basic features, but not yet top-level.  Piston and three-way flushing is a bonus, as is the rotating waste spout and waste indicators.  Good sizing, easy to use features and lightweight without hurting your back pocket.

Last updated on March 1 2020

SereneLife SLCATL320 Piston Flush Outdoor Portable Toilet Review

Top 5 features

  • Strong and robust, perfect for outdoor adventures.
  • Excellent capacity in waste tank of 5.3 gallons and 3.2 gallons of freshwater.
  • Rotating waste spout.
  • Piston pump flush system with three-way nozzle.
  • Has waste level tank indicators.

Other helpful features

  • Design supports easy cleaning and maintenance.
  • The waste tank is separated from the bowl by a  double sealed sliding valve, preventing splashback and spills.  
  • Molded handles on both tanks make transporting easy.
  • Easy to fill water tank as it has a good sized opening.
  • The openings on the waste tank are also large and have a strong cap.

For those who love the detail

Dimensions as per manufacturer’s specifications:  16.5″ length/depth  x 14.6″ width x  16.9″ height

Tank capacity: Waste tank is 5.3 gallons and fresh water tank 3.2 gallons.

  • Another excellent portable toilet with strong foundations and a good price. 
  • Excellent height at 16.9″ high.
  • The piston flush system is the most advanced flushing systems making this one of the best camping toilets in terms of flushing effectiveness and ease of use.
  • The three-way flush also means this toilet is going to stay cleaner for longer.
  • Full-size toilet seat.
  • Not that they are hard to use, but a users guide is found under the seat cover (attached to the lid)
  • Comes with its own carry bag.  Hard wearing and durable, it will ensure your camping toilet is kept in tip-top condition when you aren’t using it.
  • A lightweight unit.
  • Compact and easy to clean.
  • It has a rotating spout meaning the process of emptying out the waste water is easier and cleaner.
  • The waste spout is also coloured orange, so there’s no way anyone can mistake it for something else.
  • Waste water tank indicators are in place, meaning a simple glance will tell you when it’s time to empty.
  • A pull out lever operates the sliding valve that covers the hole at the bottom of the bowl.  When the toilet is not in use, and when being emptied, the valve should be closed. Before using the toilet, the valve is opened.
  • Both the top and bottom parts of the toilet may be separated.  The upper unit contains the freshwater whilst the bottom holds the waste.
  • The upper and lower units can be simply separated by the side latches, meaning it is easy to transport either tank to dumping or refilling areas.


  • Help to keep the toilet clean by putting some water or a small bit of toilet paper in the bottom before using it for solid waste.
  • Keep the lid of the toilet closed until you have moved the lever to open the access to the waste tank before use.
  • Keep some wet wipes close by to encourage others to clean the toilet after use if necessary.  Don’t flush these down the toilet.
  • Using the appropriate cleaning chemicals not only helps to keep the camping toilet clean but also assists with keeping the parts lubricated correctly.
  • It’s a good idea when handling portable toilet waste tanks to have some disposable gloves with you.

Cleaning and care

Cleaning the water tank will require a hose be placed into the opening to get a good clean.  As the waste tank does not have an additional rotating spout, you will need to take care not to splash yourself when cleaning.

As the warranty does not cover damage you might do to the portable toilet, it is recommended to use recommended portable toilet cleaning products.  Never use rough cleaners, pastes, scourers or acids on any of the toilet or toilet parts, especially the valves and seals.  Using the recommended products also helps to keep all parts properly maintained.


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