EPA v. LONDONDERRY MS4

Case summary

On September 28, 2022, EPA issued a Clean Water Act (CWA) Administrative Order (AO) to the town of Londonderry, New Hampshire for violations of the dry-weather outfall screening requirements of the town's municipal separate stormwater sewer system (MS4) permit. The MS4 permittee covered by the 2017 MS4 Permit in New Hampshire was required to complete screening of all stormwater outfalls/interconnections (with limited exceptions) for the presence of dry-weather flow by July 1, 2021. The community listed above has not completed such screening. The AO requires the permittee to complete dry-weather outfall screening by a specific date, or to submit a schedule by which they intend to complete such screening and to implement that schedule. EPA implements the National Pollutant Discharge Elimination System (NPDES) program in New Hampshire and issued the 2017 MS4 Permit in New Hampshire. EPA has coordinated with the New Hampshire Department of Environmental Services on this matter.

Defendants (1)

• Londonderry, Town of, NHNamed in complaintNamed in settlement

Facilities (1)

• LONDONDERRY MS4

  TOWNWIDE, LONDONDERRY, NH, 03053

  Registry ID: 110070159152

Statutes cited

• CWA 301/402 — NPDES Permit Violations

Enforcement conclusions (1)

• LONDONDERRY MS4entered 2022-09-28

  Primary law: CWA

Timeline (5 milestones)

• 2022-09-28Final Order Issued
• 2022-09-28Complaint Filed/Proposed Order
• 2022-09-29Enforcement Action Data Entered
• 2023-07-03Enforcement Action Closed
• 2023-07-03NPDES Closed