Storm Water Management Center (MS4)



The Brecknock Township, Lancaster County, Pollutant Reduction Plan (PRP)

for Little Muddy Creek, UNT to Muddy Creek, Muddy Creek, Conestoga River and the Chesapeake Bay Watershed is available for public review on the Township website at

and by request at the Township Building at 1026 Dry Tavern Road, Denver, PA 17517.  Written comments from the public will be accepted from September 18, 2023 to October 17, 2023.  Verbal and written comments will also be accepted during the Brecknock Township Board of Supervisors Meeting scheduled for October 10, 2023 at 7:00 pm at the Township Building. The PRP describes the existing loading of pollutants discharged from the Brecknock Township MS4 to Little Muddy Creek, UNT to Muddy Creek and Muddy Creek which subsequently drain to the Conestoga River and Chesapeake Bay and presents a plan to reduce these pollutants. The PRP is a requirement of the Township’s National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) permit. The Board of Supervisors reserves the right to conduct such other business as may come before it.


Carol Martin, Township Secretary / Treasurer / Admin.
To be published in the Lancaster Newspaper on September 15, 2023



~Go to Code of Ordinance page to view the Brecknock Township Stormwater Management Ordinance~

PENN STATE Extension – What is an MS4???  (Link below) 

Take this knowledge survey at the link below!! 


Stormwater is the precipitation that falls on roofs, lawns and paved areas and is carried  away by a system of stormwater pipes, culverts and ditches.  Collectively, the draining water is called storm water runoff.  Storm water becomes a problem with it picks up debris, chemicals, dirt, pet waste and other pollutants as it flows into the water bodies we use for swimming, fishing and drinking untreated.  Excessive debris can clog inlets, causing flooding and erosion of stream banks.  Property owners including homeowners, business owners and farmers can help reduce stormwater pollution.  For additional information click here, Where it Rains, It Drains Brochure.


MS4 is a municipal separate storm sewer system, meaning any storm sewers, swales, roadways, etc. owned by the municipality within the EPA-designated “urbanized area”.  The designated urbanized areas for Brecknock Township and the associated MS4 can be seen on these maps  (Map #1 & Map #2). Operators of regulated small MS4s are required to maintain a stormwater program in compliance with the MS4 permit to reduce the discharge of pollutants to the required levels, where applicable, or the maximum extent practicable, protect water quality and satisfy the appropriate water quality requirements of the Clean Water Act.  The Township shall educate the public, encourage participation in stormwater-related projects/activities, prevent illicit discharges, address construction site runoff, inspect stormwater BMPs installed for stormwater management, and ensure good housekeeping and maintenance of Township facilities and municipally owned stormwater management systems.

Illicit Discharges
Federal regulations define an illicit discharge as any discharge to the storm sewer system that is not composed entirely of stormwater.  There are exceptions to this rule such as firefighting activities, landscape irrigation, foundation drains, water from crawl space pumps etc.

Sources of illicit discharges include:

  • sanitary wastewater
  • failing septic systems
  • car wash waste water
  • improper oil disposal
  • radiator flushing disposal
  • spills from roadway accidents
  • improper disposal of household toxics or improper use of pesticides and herbicides etc.

Illicit discharges enter the system either through direct connections (deliberate pipe hookups to the storm drain system) or indirect connections (spills collected by drain outlets, or deliberate dumping down the storm drain.) These illicit discharges drain directly to the creeks and streams and may be loaded with a large amount of harmful and toxic substances.  These pollutants enter the aquatic system and degrade the water quality and threaten wildlife and human health.  Those who allow prohibited discharge to enter the Municipal Separate Storm Sewer System (MS4) are in violation of the Stormwater Management Ordinance and can be subject to a fine.

Report suspected illicit discharges: (link to water quality hotlines sheet)

Managing Stormwater and Preventing Stormwater Pollution Information and Tips
Important ways to prevent storm water pollution:

  • Properly dispose of hazardous substances such as used oil, cleaning supplies and paint – never pour them down any part of the storm sewer system and report anyone who does.
  • Use pesticides, fertilizers, and herbicides properly and efficiently to prevent excess runoff.
  • Look for signs of soil and other pollutants, such as debris and chemicals, leaving construction sites in storm water runoff or tracked into roads by construction vehicles.  Report poorly managed construction sites that could impact storm water runoff to your community.
  • Install innovative storm water practices on residential property, such as rain barrels or rain gardens, that capture storm water and keep it on site instead of letting it drain away into the storm sewer system.
  • Report any discharges from storm water outfalls during times of dry weather – a sign that there could be a problem with the storm sewer system.
  • Store materials that could pollute storm water indoors and use containers for outdoor storage that do not rust or leak to eliminate exposure of materials to storm water.

Homeowners can reduce runoff and pollution from their property through proper lawn maintenance, adding rain gardens or cisterns, maintaining on-lot sewage systems, and proper disposal of waste.

1.  10 Things You can Do
2.  Composting
3.  Green Lawn
4.  Stormwater Monthly Planner*
*(link says Chester County but applies to Lanc. County also)
5.  Solution to Pollution
6.  Natural Yard Care
7. Caring for your Streamside Property
8. On-Lot Septic System Facts

Business owners should strive to reduce runoff from impervious areas on their sites, properly dispose of trash and hazardous materials, and monitoring outdoor activities.

1.   General Business Information
2.   Automobile Service Facilities
3.   Restaurants
4.   Fact Sheet on Coverings for Raw Materials/Finished Products
5.   Spill Prevention Planning

The use of fertilizers and pesticides, animal wastes, and land use along streams can impact water quality, but you can help!
1.      Ag Conservation Plans
2.      Ag Runoff Fact Sheet
3.      Am I in Compliance – click here for more information
4.      Agricultural Funding Opportunities:

Developers are responsible for stormwater management, erosion and sediment control and pollution prevention during construction of large and small projects.  For additional information see:
1.      Building Towards Cleaner Water
2.      Construction BMP Maintenance
3.      Preventing Pollution at Construction Sites:

Hazardous Material Recycling

Seminars, Events & Volunteer Opportunities
Lancaster County Watersheds
LCCD Tree Sale
LCCD Events/Seminars

Other Sites to Visit
Lancaster County Conservation District  (LCCD) (
PADEP Southcentral Office (
County Clean Water Consortium (
PADEP Stormwater Management Program  (
EPA Chesapeake Bay TMDL
Pennsylvania Best Management Practices (BMP) Manual

Your Actions Prevent Stormwater Pollution!

Pollutant Reduction Map

Stormwater And Floodplains 

Fence ‘Em Out

Why Keep the Cows Out of the Streams?

Conservation Planning Made Easy