Any drain or conveyance, whether on the surface or subsurface, that allows any nonstormwater discharge including sewage, process wastewater, and wash water to enter the waters of this commonwealth is prohibited.
The following discharges are authorized unless they are determined to be significant contributors to pollution to the waters of this commonwealth:
Discharges from firefighting activities.
Potable water sources including waterline flushing.
Water from crawl space pumps.
Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred (unless all spill material has been removed) and where detergents are not used.
Diverted stream flows.
Flows from riparian habitats and wetlands.
Uncontaminated water from foundations or from footing drains.
Dechlorinated swimming pool discharges.
Water from individual residential car washing.
Routine external building wash-down (which does not use detergents or other compounds).
Water discharged in well testing for potable water supplies.
Roof drains and sump pumps shall discharge to infiltration or vegetative BMPs and to the maximum extent practicable satisfy the criteria for DIAs.
No person shall modify, remove, fill, landscape, or alter any SWM BMPs, facilities, areas, or structures in a manner without the written approval of the municipality, with the exception of necessary maintenance activities such as mowing.