Keep these out of the system
- Wipes (including "flushable" ones), sanitary products, nappies and cotton buds
- Fats, oils and grease
- Paint, solvents, chemicals and medicines
- Large amounts of bleach or disinfectant
- Food scraps and coffee grounds
Cleaning products
Use cleaning products in moderation, and look for ones the manufacturer labels as suitable for septic systems. Labels aren't independently tested, so moderation matters more than the brand. For an AWTS, your service technician or the manual for your plant is the best guide.
Water use
Spreading out washing loads and fixing leaking taps or toilets avoids flooding the system with more water than it can handle.
Additives
We don't recommend any particular additive. Ask your provider before using one, especially in an AWTS.
Related
Sources: Toowoomba Regional Council – On-site sewerage facilities. General guidance only; check with council or a licensed provider for your property.