Septic tanks: What not to do
More than half a million homes in the UK have a septic tank, and most homes with private drainage have a septic tank into which wastewater from loos, showers, sinks, and washing machines is discharged. Making sure you know what not to do with a septic tank is important to avoid unnecessary damage and expenses.
Check out our list of what not to use with a septic tank, this is not a complete list as there are many other things but a basic list of everyday items. So, here are a few things you should not put in your septic tank:
- Bleach
- Paint
- Disinfectants
- Garden pesticides
- Medicines
- Solvents like white spirit
- Drain cleaning and unblocking liquids that contain caustic soda
- Cigarette butts
- Disposable diapers
- Sanitary pads & tampons
- Wipes
- Pop-off toilet brush scrubbers
- Rubbish
- Condoms
- Hair
- Plasters
- String
- Coffee grounds
- Paper towels
- anti-bacterial soaps – biodegradable soaps only!
- latex, plastic, or metallic objects
- hard toilet paper – soft is better for the tank
- Dead fish
- Kitchen grease
- Septic tank installation
- Removal
- Septic tank cleaning
- Conversion of a tank to a treatment plant
- Reports and investigations
- Sorting out soakaway problems
- Advice on emptying and maintaining septic tanks



