Pennsylvania Stormwater Regulations
The federal Clean Water Act (CWA) prohibits the discharge of pollutants into waterways without the appropriate permits. Pennsylvania’s Stormwater Management Act (better known as Act 167), MS4 Program, Chapter 102 (Erosion and Sediment Control Requirements), and NPDES Permit Program for Stormwater Discharges Associated with Construction Activities are amongst the Commonwealth’s methods for meeting the runoff-related requirements of the Clean Water Act. ‚Äď taken from http://www.stormwaterpa.org/how-to-apply-best-practices.html.
|Act 167 Stormwater Management Act
Pennsylvania enacted the Stormwater Management Act (Act 167) in 1978 in an effort to prevent and mitigate the effects of accelerated stormwater runoff.¬† Act 167 requires counties to create and implement watershed-based or county-based stormwater management plans.¬† Additionally, municipalities are required to adopt and enforce ordinances to regulate stormwater impacts of development and redevelopment in accordance with the county plans.¬†
Visit PA DEP's website here to learn more about Act 167.
Policy and Purpose
The policy and purpose of Act 167 is to:
- Encourage planning and management of storm water runoff in each watershed that is consistent with sound water and land use practices.¬†
- Authorize a comprehensive program of storm water management designated to preserve and restore the flood carrying capacity of Commonwealth streams; to preserve to the maximum extent practicable natural storm water runoff regimes and natural course, current and cross section of water of the Commonwealth; and to protect and conserve ground waters and groundwater recharge areas.¬†¬†
- Encourage local administration and management of storm water consistent with the Commonwealth's duty as trustee of natural resources and the people's constitutional right to the preservation of natural, economic, scenic, aesthetic, recreational and historic values of the environment.¬†
- Policy & Purpose information taken from Westmoreland County’s Act 167 Phase 1 report.
For a detailed listing of what is required in an Act 167 plan, see the full Stormwater Management Act here.
To Download the 167 Plans
Roll over a county on the map to the right to view that county's approved 167 Plan!
All plans are in PDF. In order to view them, you must have Adobe Acrobat
Reader installed. If you don’t have Acrobat Reader, it’s available as a free
download from Adobe.
|Approved Act 167 Plans
Our 10 counties are in various stages of Act 167 planning. Hover over the desired county for more information, completed plans, and model ordinances.
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