EPA v. MASHPEE TOWN OF

Case summary

On June 9, 2025, the Region issued an Administrative Compliance Order to the town of Mashpee, MA for their violation of the Massachusetts MS4 Permit requirement to enact a post-construction stormwater management ordinance, by-law, or other regulatory mechanism. The Order cites the town's failure to develop or modify, as appropriate, a post-construction stormwater management ordinance within three (3) years of the effective date of the Permit (i.e., by July 1, 2022). The Order requires Mashpee to enact a post-construction stormwater management ordinance or other regulatory mechanism by December 31, 2025. The town must then notify EPA that such an ordinance or regulatory mechanism has become effective within 7 days of its effective dates and provide the Agency with a copy of their regulatory mechanism. The Order will facilitate the reduction of pollutants found in their stormwater through the retention or treatment of stormwater after construction on new or redeveloped sites. The Region coordinated with the Massachusetts Department of Environmental Protection (MassDEP) on this matter.

Defendants (1)

• Town of Mashpee, MANamed in complaintNamed in settlement

Facilities (1)

• MASHPEE TOWN OF

  16 GREAT NECK ROAD NORTH, MASHPEE, MA, 02649

  Registry ID: 110011907124

Statutes cited

• CWA 301/402 — NPDES Permit Violations

Enforcement conclusions (1)

• MASHPEE TOWN OFentered 2025-06-09

  Primary law: CWA

Timeline (3 milestones)

• 2025-06-09Enforcement Action Data Entered
• 2025-06-09Final Order Issued
• 2025-06-09Complaint Filed/Proposed Order