A.
Any drain or conveyance, whether on the surface or subsurface, that allows any nonstormwater discharge including sewage, process wastewater, and wash water to enter a regulated small MS4 or to enter the surface waters of this commonwealth is prohibited.
B.
No person shall allow, or cause to allow, discharges into a regulated small MS4, or discharges into waters of this commonwealth, which are not composed entirely of stormwater, except (1) as provided in Subsection C below and (2) discharges authorized under a state or federal permit.
C.
The following discharges are authorized unless they are determined to be significant contributors to pollution a regulated small MS4 or to the waters of this commonwealth:
(1)
Discharges or flows from firefighting activities.
(2)
Discharges from potable water sources including water line flushing and fire hydrant flushing, if such discharges do not contain detectable concentrations of total residual chlorine (TRC).
(3)
Noncontaminated irrigation water, water from lawn maintenance, landscape drainage and flows from riparian habitats and wetlands.
(4)
Diverted stream flows and springs.
(5)
Water from crawl space pumps.
(6)
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.
(7)
Noncontaminated pumped ground water and water from foundation and footing drains and crawl space pumps.
(8)
Uncontaminated water from foundations or from footing drains.
(9)
Noncontaminated HVAC condensation and water from geothermal systems.
(10)
Residential (i.e., not commercial) vehicle wash water where cleaning agents are not utilized.
(11)
Noncontaminated hydrostatic test water discharges, if such discharges do not contain detectable concentrations of TRC.
D.
In the event that the municipality or DEP determines that any of the discharges identified in Subsection C significantly contribute pollutants to a regulated small MS4 or to the waters of this commonwealth, the municipality or DEP will notify the responsible person(s) to cease the discharge.
E.
In the event that the municipality or PADEP determines that any of the discharges identified in Subsection D significantly contribute to pollution of waters of the commonwealth, or is so notified by PADEP, the municipality will notify the responsible person(s) to cease the discharge.
F.
Upon notice provided by the municipality or PADEP under Subsection E, the discharger will have a reasonable time, as determined by the municipality or PADEP, to cease the discharge, consistent with the degree of pollution caused by the discharge.
G.
Nothing in this section shall affect a discharger's responsibilities under commonwealth law.