Things that should not go down into the septic tank
There is no difference between a septic tank and a sewerage system when it comes to Household Sewer Pollution. The same problems that affect a sewerage system affect your septic tank. It can even overflow and the results go into the waterways.
The Kitchen Sink Don'ts , Toilet and Shower Don'ts and Gully Trap Don'ts pages apply to you and your septic tank just as much as to people on a sewerage system.
And the Stormwater Don'ts apply to everyone.