Generally, if the drain or sewer is within your property’s boundaries, it is your responsibility.A drain or sewer which is off your premises, or collects sewage from properties other than just your own, is usually the responsibility of your water company.
If you aren’t connected to a main sewer - instead using a septic tank, treatment plant or cesspool - or you are connected to a privately owned sewer, you will be responsible for repairs. If numerous properties connect to such sewers, you’ll be jointly responsible.


