A.
Any drain or conveyance, whether on the surface or subsurface, which allows any non-stormwater discharge including sewage, process wastewater, and wash water to enter the waters of this commonwealth is prohibited.
B.
No person shall allow, or cause to allow, discharges into surface waters of this commonwealth which are not composed entirely of stormwater, except: 1) as provided in Subsection C below, and 2) discharges allowed under a state or federal permit.
C.
The following discharges are authorized unless they are determined to be significant contributors to pollution to the waters of this commonwealth:
(1)
Discharges from fire fighting activities.
(2)
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)
Non-contaminated irrigation water, water from lawn maintenance, landscape drainage and flows from riparian habitats and wetlands.
(4)
Non-contaminated HVAC condensation and water from geothermal systems.
(5)
Diverted stream flows and springs.
(6)
Water from crawl space pumps.
(7)
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.
(8)
Flows from riparian habitats and wetlands.
(9)
Uncontaminated water from foundations or from footing drains.
(10)
Non-contaminated hydrostatic test water discharges, if such discharges do not contain detectable concentrations of TRC.
(11)
Dechlorinated swimming pool discharges.
(12)
Uncontaminated groundwater.
(13)
Residential (i.e., not commercial) vehicle wash water where cleaning agents are not utilized.
(14)
Routine external building wash down (which does not use detergents or other compounds)