The 2017 New Hampshire Small MS4 General Permit was issued on January 18, 2017. The final permit reflects modifications to the 2013 Draft Small MS4 General Permit and the 2015 Renoticed permit sections. This permit replaces the 2003 small MS4 general permit for MS4 operators within the state of New Hampshire. For more information on communities within New Hampshire that are automatically designated and may require permit coverage see: NH regulated communities.

Please see the EPA 2017 Municipal Separate Storm Sewer System General Permit (MS4GP) for the latest on the 2017 final MS4 permit.