The discharge of treated foul water (via an appropriate treatment plant) requires consent in accordance with Byelaw 3. The Board will determine applications received seeking to discharge treated foul water in accordance with the policy below. The Board’s consent does not replace the applicant’s obligation to seek an Environment Permit from the Environment Agency for the treatment plant and outfall or meet the general binding rules published by DEFRA.

Policy: Discharge of Treated Foul Water

The Board will only approve an application to discharge treated foul water where the watercourse can be evidenced as being connected to the wider watercourse network. Applications may be refused if the Board's Officers consider that the proposals may increase flood risk, cause environment harm which cannot be mitigated, negatively impact the efficiency of local drainage or if the receiving watercourse will not be capable of accepting the planned additional flows. Where the discharge is to an open watercourse, the discharge pipe should be installed through a pre-cast concrete outfall unit dug in flush with the drain batter. Suitable erosion protection should be installed below the headwall down to the toe of the watercourse and also dug in flush with the drain batter. Where the discharge is to a piped watercourse, the discharge pipe should be connected into an existing inspection chamber, or a new inspection chamber should be constructed to the Board's specification to accommodate the outfall. If consent is granted by the Board, this may be conditional.