[Amended 6-17-2025 by Ord. No. 426]
A. 
No person in Whitpain Township shall allow, or cause to allow, stormwater discharges into the municipality's separate storm sewer system which are not composed entirely of stormwater, except:
(1) 
As provided in Subsection B below; and
(2) 
Discharges allowed under a state or federal permit.
B. 
The following discharges which may be allowed, based on a finding by Whitpain Township that the discharge(s) do not significantly contribute to pollution to surface waters of the commonwealth, are:
(1) 
Discharges or flows from fire-fighting activities.
(2) 
Non-contaminated water from pumped ground water and water from foundation footing drains and crawl space pumps.
(3) 
Discharges from potable water sources, including dechlorinated water line and fire hydrant flushings, if such discharges do not contain detectable concentration of total residual chlorine (TRC).
(4) 
Non-contaminated irrigation water, water from lawn maintenance, landscape drainage and flows from riparian habitats and wetlands.
(5) 
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.
(6) 
Residential (i.e., not commecial) vehicle wash water where cleaning agents are not utilized.
(7) 
Routine external building wash down (which does not use detergents or other compounds).
(8) 
Non-contaminated HVAC condensation and water from geothermal systems.
(9) 
Dechlorinated swimming pool discharges.
(10) 
Diverted stream flows and springs.
C. 
In the event that Whitpain Township or DEP determines that any of the discharges identified in Subsection B significantly contribute pollutants to a regulated small MS4 or to the waters of the commonwealth, Whitpain Township or DEP will notify the responsible person to cease the discharge.
D. 
Upon notice provided by Whitpain Township or DEP under Subsection C, the discharger will have a reasonable time, as determined by Whitpain Township or DEP, to cease the discharge consistent with the degree of pollution caused by the discharge.
E. 
Nothing in this section shall affect a discharger's responsibilities under state law.
The following connections are prohibited, except as provided in § 125-37B above:
A. 
Any drain or conveyance, whether on the surface or subsurface, which allows any nonstormwater discharge including sewage, process wastewater, and wash water, to enter the separate storm sewer system, and any connections to the storm drain system from indoor drains and sinks; and
B. 
Any drain or conveyance connected from a commercial or industrial land use to the separate storm sewer system which has not been documented in plans, maps, or equivalent records, and approved by Whitpain Township.
[Amended 6-17-2025 by Ord. No. 426]
A. 
Roof drains shall not be connected to streets, sanitary or storm sewers or roadside ditches, except as provided in § 125-39B.
B. 
When it is more advantageous to connect directly to storm sewers, connections of roof drains may be permitted by Whitpain Township.
C. 
Roof drains shall discharge to infiltration areas or vegetative BMPs to the maximum extent practicable.
D. 
Sump pumps may be connected into storm sewer systems upon approval by Whitpain Township and acquiring necessary permits.
E. 
Pipe terminals. Pipe discharge terminals for storm- or subsurface water that terminate on the surface of the ground shall be located a sufficient distance from any lot line, except the ultimate right-of-way line, such that the discharge water will blend with the natural sheet runoff before it reaches the property line.
(1) 
A pipe discharge terminal for gravity runoof shall be located no closer than 10 feet to a lot line or ultimate right-of-way line.
(2) 
A pipe discharge terminal for pressurized runoff, including such runoff from sump pumps or similar mechanical equipment related to the management of stormwater, shall be located no closer than 20 feet to a lot line or ultimate right-of-way line.
A. 
No person shall modify, remove, fill, landscape or alter any existing stormwater BMP, unless it is part of an approved maintenance program, without the written approval of Whitpain Township.
B. 
No person shall place any structure, fill, landscaping or vegetation into a stormwater BMP or within a drainage easement, which would limit or alter the functioning of the BMP, without the written approval of Whitpain Township.