Municipal Separate Storm Sewer System (MS4) Compliance Documents

National Pollutant Discharge Elimination System (NPDES)

The storm drain system in Needham is regulated by the Environmental Protection Agency MS4 (Municipal Separate Storm Sewer System) permit program. The issuance of this permit means that residents, businesses, developers, and industrial facilities in Needham are responsible for reducing the discharge of pollutants from the municipality's storm sewer system to the maximum extent practicable.

Town of Needham MS4 Compliance Documents

• Annual Report (2019)
• Annual Report (2020)
• Annual Report (2021)
• Annual Report (2022)
• Annual Report (2023)
• Annual Report (2024)
• Annual Report (2025)

2016 NPDES Permit Application (EPA)

2016 MS4 EPA Approval Letter (EPA)

Stormwater Management Plan (SWMP) 

Illicit Discharge Detection and Elimination (IDDE) Program

Good Housekeeping and Pollution Prevention (O&M) Plan (in development)

DPW Stormwater Pollution Prevention Plan (SWPPP)

RTS Stormwater Pollution Prevention Plan (SWPPP)

Phosphorus Control Plan (PCP) (in development)

Needham Stormwater Standard Operating Procedures (SOPs) 

• Catch Basin Inspection & Cleaning
• Dry Weather Outfall Inspections
• Locating Illicit Discharges
• Water Quality Screening
• Wet Weather Outfall Inspections
• Construction Site Stormwater Inspections
• Site Plan Review
• Street Sweeping
• Snow and Ice

Other MS4 Stormwater Documents

• Needham Stormwater Bylaw
• Needham Infiltration Map
• Watershed 2 Analysis (2022)
• Annual Report Logbook(2019)
• Annual Report Logbook(2020)
• Annual Report Logbook(2021)
• Annual Report Logbook (2022)
• Annual Report Logbook (2023)
• Annual Report Logbook (2024)
• Annual Report Logbook (2025)