New Hampshire Stormwater-Municipalities regulations & environmental compliance analysis

New Hampshire Stormwater-Municipalities: What you need to know

Governing Law and Regulations

National Pollutant Discharge Elimination System (NPDES) permit program: New Hampshire Revised Statutes Annotated (RSA) 485-A:13

Regulatory Agencies
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U.S. Environmental Protection Agency (EPA) Region 1

New Hampshire Department of Environmental Services (DES) Wastewater Engineering Bureau Permits and Compliance Section

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. New Hampshire is not authorized by the U.S. Environmental Protection Agency (EPA) to administer the federal National Pollutant Discharge Elimination System (NPDES) permit program for municipal separate storm sewer systems (MS4s). See the national section STORMWATER—MUNICIPALITIES for more information on the federal MS4 stormwater permitting in the state.

Administration and enforcement. EPA Region 1's office administers the federal stormwater permitting program in New Hampshire. However, a state-specific Notice of Intent (NOI) must be submitted for coverage under the NPDES General Permit for small MS4s to the DES Permits and Compliance Section. A copy of this NOI can be accessed in Forms in this section.

State Requirements


For MS4s in the coastal watershed, there are two grants administered by the DES that can help pay for required elements of one of the six minimum control measures, illicit discharge detection and elimination, as required for the stormwater management program under the federal regulations. Funding for these grants is provided by the New Hampshire Estuaries Project.


For access to the DES NOI for Coverage under the NPDES General Permit for Stormwater Discharges from Small MS4s ...

Read more about Stormwater-Municipalities

New Hampshire Stormwater-Municipalities Resources

Type Title
Forms Western Washington Phase II Municipal Stormwater Permit Forms
See all Stormwater-Municipalities Resources