87.28. Effluent of a tertiary treatment system with phosphorous removal: The effluent of a tertiary treatment system with phosphorous removal that cannot be carried towards a leaching field that complies with subdivision 1 of Division XV.4 or towards an above-ground leaching field built with borrowed sand that complies with Division XV.4.1 may be discharged into any watercourse whose dilution rate in dry periods is over 1:300.
The outlet pipe through which the effluent is discharged into the watercourse must be located at all times below the surface of the receiving water.
O.C. 786-2000, s. 69; O.C. 1156-2020, s. 701.