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.
C.
The following discharges which may be allowed, based on a finding by the municipality that the discharge(s) do not significantly contribute to pollution to surface waters of the commonwealth, are:
(1)
Discharges from firefighting activities.
(2)
Potable water sources, including dechlorinated waterline and fire hydrant flushings, 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)
Routine external building washdown (which does not use detergents or other compounds).
(5)
Noncontaminated HVAC condensation and water from geothermal systems.
(6)
Water from individual residential car washing.
(7)
Diverted stream flow and springs.
(8)
Noncontaminated pumped groundwater and water from foundation and footing drains and crawl space pumps.
(9)
Residential (i.e., not commercial) vehicle wash water where cleaning agents are not utilized.
(10)
Flows from riparian habitats and wetlands.
(11)
Lawn watering.
(12)
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.
(13)
Dechlorinated swimming pool discharges, if such discharges do not contain detectable concentrations of total residual chlorine (TRC).
(14)
Residential (i.e., not commercial) vehicle wash water where cleaning agents are not utilized.
(15)
Noncontaminated hydrostatic test water discharges, if such discharges do not contain detectable concentrations of TRC.
(16)
Rising groundwaters.
(17)
Uncontaminated groundwater infiltration [as defined in 40 CFR 35.2005(20)].
(18)
Uncontaminated pumped groundwater.
D.
In the event the municipality or DEP determines that any of the discharges identified in Subsection C 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.
E.
Upon notice provided by the municipality under Subsection D, the discharger will have a reasonable time, as determined by the municipality, to cease the discharge consistent with the degree of pollution caused by the discharge.
F.
Nothing in this section shall affect a discharger's responsibilities under state law.