ALERTS: None at this time!


View of the WWTF from the top of the Sludge Building


Philippe Maltais -Superintendent
Jamie McDonald -Secretary
Mario Leclerc – Industrial Pre-Treatment

P: 603-474-8030  ◊  F: 603-474-8014

Mission:The Wastewater Department is dedicated to collecting and treating wastewater that flows into our facility from the approximately 50 miles of sewer mains and 120 lift stations in the Town of Seabrook, and delivering a clean, clear effluent into the Atlantic Ocean. Our Wastewater Treatment Facility is located at 274 Rte 286 on the beautiful Wright’s Island.

Effluent discharged from Seabrook WWTP
Photo taken on September 23 2015


Wasterwater Treatment Facility
274 Route 286, Wright’s Island
PO Box 456
Seabrook NH 03874

Hours of Operation:
7:00am – 3:00pm (Monday – Friday)

*If you have an after hours sewer emergency please contact the Seabrook Police Department business line at (603) 474-5200*

Services and Responsibilities

The Wastewater Treatment Plant is permitted through the EPA’s National Pollutant Discharge Elimination System (NPDES). The permit expires every five years at which time the town has to apply for a renewal. The current permit was issued in September of 2010 and is in the process of being renewed. The permit establishes the discharge limitations for the plant under the Clean Water Act. The Wastewater Department is responsible for maintaining discharge compliance and for the administration of this permit. Other responsibilities include:

  • Maintain and operate the town wide sewer system including the wastewater treatment plant
  • Maintain and operate sewer pump stations
  • Implement and maintain Sewer ordinance and Facility Plan
  • Review real estate development proposals for sewer impact, write permits, and inspect sewer construction
  • Manage the industrial pretreatment program


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Downloadable Forms
Sewer Ordinance 2005
Guidance & Instructions
Driving Directions
Rules & Regulations for Sewer Construction
Water Department
Schedule of Fees

 You can now pay Water and Sewer bills online!

School & Group Tours

The Wastewater Plant will host school and group tours. Tours are typically given mid-morning or early afternoon.

If you are interested in setting up a tour, please contact us at
603-474-8012 to set up your tour date and time