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Stormwater Regulations

The City of Manchester is focused on managing their stormwater. Stormwater discharges in the City of Manchester are regulated by the U.S. Environmental Protection Agency (EPA) National Pollutant Discharge Elimination System (NPDES) Phase II Stormwater Permit Program. Under this program, Manchester was required to obtain NPDES permit coverage under the 2003 and 2017 General Permit for Stormwater Discharges from Small Municipal Separate Storm Sewer Systems (MS4s)" for its stormwater discharges. This permit program was created with the intention of improving the quality of the nation’s waterways by reducing the quantity of pollutants that stormwater picks up and carries into stormwater systems and discharges to surface waters.

Under this permit, Manchester was required to develop and implement an ordinance, by-law, or regulatory mechanism to address stormwater discharges.

The Board of Mayor and Aldermen approved the Stormwater Ordinance on August 1, 2006. Click on the link below to view the current Stormwater Ordinance: 

Adopted Stormwater Ordinance

The Department of Highways drafted supporting regulations to support the ordinance on December 5, 2006. Click on the link below to view the current Stormwater Regulations: 

Adopted Stormwater Regulations

The purpose of this Stormwater Ordinance is to protect, maintain, and enhance the environment of the City of Manchester and the public health, safety, and general welfare of its citizens by controlling discharges of pollutants to the City’s stormwater system. The supporting regulations address the following:

  • Prohibited Discharges
  • Permit Procedures and Requirements including Stormwater Pollution Prevention Plan (SWPPP) Requirements
  • Conditions for a Waiver
  • Storm Water System Design and Management Standards
  • Industrial Activity Discharges
  • Access and Inspection of Properties and Facilities
  • Notification of Accidental Discharges and Spills
  • Violations, Enforcement, and Penalties
  • Eligibility

As part of the recent MS4 permit requirements, the City of Manchester completed a review and evaluation of the Stormwater Regulations. The results of this review are included in the Stormwater Management Program (SWMP) document and can be viewed by clicking on the following link:

Stormwater Regulation Review 


If you have any stormwater-related issues or questions, please contact the EPD Stormwater Department at (603) 624-6527 or email us by clicking on the link below:
Email the Stormwater Department