Types of Toilets
Cassette toilets have a removable waste container you empty at a dump station. Fixed toilets (macerating or cassette-in-place) are plumbed into a built-in tank. Under NZS 5465, new self-containment certifications generally require a fixed toilet (see blue vs green; blue expires 7 June 2026). Existing warrants with portable/cassette setups may still be valid until expiry.
Using and Emptying
Use approved chemicals in cassette and holding tanks to break down waste and reduce odour. Empty only at dump stations — never on the ground or into waterways. Empty the cassette when it’s 2/3 full to avoid spills. Rinse the cassette and the dump station area after use. See dump stations for how to find and use them.
Maintenance
Keep seals and blades (if macerating) in good condition. Replace seals if they leak. Clean the cassette with dedicated cleaner and flush the flush tank. A well-maintained toilet lasts longer and avoids smells and leaks that can affect your self-containment warrant.