MS4 Stormwater

MS4 Stormwater Program

Union Township, as a Municipal Separate Storm Sewer System (MS4) community, implements stormwater management measures required by the Pennsylvania Department of Environmental Protection. The program includes public education, illicit discharge detection, construction site controls, and post-construction stormwater management.

Rain Drain Brochure (PDF)

Minimum Control Measures (MCMs)

Union Township's MS4 permit requires implementation of six Minimum Control Measures as defined by the Pennsylvania DEP. Click each measure to learn more.

• MCM #1 — Public Education & Outreach
• MCM #2 — Public Involvement & Participation
• MCM #3 — Illicit Discharge Detection & Elimination
• MCM #4 — Construction Site Stormwater Runoff
• MCM #5 — Post-Construction Stormwater Management
• MCM #6 — Pollution Prevention / Good Housekeeping

MS4 Regulatory Resources

Additional stormwater program resources from PA DEP, EPA, and educational partners. Minimum Control Measures (MCMs) are listed in the section above.

• DEP Stormwater Management
• EPA Stormwater Management
• Water Cycle Glossary of Terms
• Guide to Rain Gardens