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  • Home
  • Meetings & Events
  • Contact Information
  • Community Resources
    • Athletics
    • Community Contacts
    • Finleyville Airport
    • Garbage and Recycling Collection
    • Housing Developments
    • Right-to-Know
    • Schools
    • Scouts
    • Township Newsletter
    • Veterans Memorial and UT Community Park
    • Voting / Gov’t Information
  • Documents/Forms
    • Agendas / Minutes
      • Planning Department Meeting Docs
      • Board of Supervisors Meeting Docs
      • Minutes and Hearing Transcripts
      • Parks & Recreation Meeting Docs
    • Applications and Permits
    • Fee Schedules
    • Military Banner Application
    • Multi-Municipal Comprehensive Plan (Union & Carroll Townships)
    • Park Rental Application
    • Release Letter
    • Township Code (Ordinances)
    • Zoning Map
    • Zoning Ordinance
  • Township Info
    • Boards & Professionals
    • Budget
    • Commercial Recycling Forms and Reporting
    • Impact Fee
    • Magistrate
    • Military Banner Program
    • Planning / Zoning
    • Property Transfer
    • Roads
    • Sewage & Septic
    • Taxes
      • County Taxes
      • Earned Income (Wage) Tax
      • Local Services Tax
      • Municipal and School Real Estate Taxes
      • Per Capita Tax and Streetlight Assessment
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Stormwater Management

MS4, short for “Municipal Separate Storm Sewer System,” refers to a collection of structures, including retention basins, ditches, roadside inlets, and underground pipes that help to mitigate stormwater. Stormwater occurs when precipitation from rain or melting ice or snow flows over the land’s surface. As land development occurs, the amount and rate of this stormwater increases. This runoff is carried to our community’s local waterways, such as streams, ponds rivers, and wetlands. Without properly managed stormwater, properties may experience erosion and flooding.

The MS4 Program is managed by the Pennsylvania Department of Environment that requires communities with “Urbanized Areas” (per the U.S. Census Bureau) to take part. The six focus areas that the Environmental Protection Agency considers essential include: Public Education and Outreach, Construction Site Erosion Control, Public Participation and Involvement, Post Construction Stormwater Management, Illicit Discharge Detection, and Elimination, and Pollution Prevention and Good Housekeeping.

Please explore the links below for more information about stormwater management and the MS4 Program in Union Township!

  • Illicit Discharge Complaint Form:
    • https://uniontwp.com/wp–content/uploads/2021/09/idd-complaint-form.pdf
  • Union Township Annual Report (2020/2021)
    • https://uniontwp.com/wp-content/uploads/2021/09/Union-Annual-Report-2020-2021.pdf
  • Union Township Annual Report (2019/2020)
    • https://uniontwp.com/wp-content/uploads/2021/09/Union-Annual-Report-2019-2020.pdf
  • Union Township MS4 Permit
    • https://uniontwp.com/wp-content/uploads/2021/09/MS4_FINAL-PERMIT_UNION-TWP_PAI136131.pdf
  • Guidlines for Maintaining Streams in Your Community Booklet
    • https://uniontwp.com/wp-content/uploads/2021/09/Maintaining-Streams.pdf
  • Union Township Waterways Ordinance
    • https://uniontwp.com/wp-content/uploads/2021/09/Legislation-Uncategorized-2021-Ordinance-No.-2021-04.pdf
  • Department of Environmental Protections Municipal Stormwater Website
    • https://www.dep.pa.gov/Business/Water/CleanWater/StormwaterMgmt/Stormwater/Pages/default.aspx
  • Environmental Protection Agency’s Municipal Stormwater Website:
    • https://www.epa.gov/npdes/stormwater-discharges-municipal-sources

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Stay in Touch!

Physical / Mailing Address
3904 Finleyville-Elrama Road
Finleyville, PA, 15332
Washington County

Phone: 724-348-4250
Fax: 724-348-8234

Business Hours: Monday – Friday 8:00am – 4:30pm

Union Township Municipal Building

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