What can and cannot go into my septic tank or sewage treatment plant?

The rule is simple: only the three Ps – pee, paper and poo. Everything else should go in the bin. Wet wipes, sanitary products, cotton buds, nappies and cooking fats should never enter the foul drainage system. When choosing cleaning products, opt for low-phosphate or phosphate-free formulations, use them sparingly, and spread laundry washing throughout the week rather than doing multiple loads in a single day. Wipe greasy or oily pans with kitchen roll and bin it before washing – this prevents fats from entering and clogging the system.