Septic Tank Law is Changing

You must read septic tanks and treatment plants: permits and general binding rules before you follow this guidance.

The requirements changed on 1 January 2015. If your system was installed and discharging before 31 December 2014 you have an ‘existing discharge’. If your system was installed and discharging on or after 1 January 2015 you have a ‘new discharge’.

If your discharge causes pollution you may be committing an offence. The Environment Agency will give you advice to help you fix the problem. If your discharge continues to cause pollution the Environment Agency may take enforcement action against you.

https://www.gov.uk/guidance/general-binding-rules-small-sewage-discharge-to-a-surface-water