Engineering & Environmental Services

Mission

To efficiently and effectively maintain the Town’s roadways and other infrastructure. To provide technical and engineering support. To build and maintain a public sewer infrastructure, manage the collection and disposal of solid waste, and implement and improve environmental managerial practices.

Major Services / Responsibilities

  • House the public works plans and records.
  • Issue / review permits for excavation and driveways.
  • Review projects for the Planning Board.
  • Inspect roadway projects, subdivisions, and site improvements for compliance with Town standards.
  • Continue use of the roadway Maintenance and Improvement Plan.
  • Assist in the design and preparation of cost estimates for Town projects.
  1. Old Derry Rd. Water Main Extension - April 7, 2026

    Beginning April 8, 2026, for the duration of the 2026 construction season, the Town of Derry will resume work associated with the installation of a new water main on Old Derry Road. Read on...
  2. Old Nashua Rd. Water Main Extension - April 7, 2026

    Beginning April 8, 2026, for the duration of the 2026 construction season, Pennichuck Water will resume work associated with the installation of a new water main on Old Nashua Road. Read on...
  3. Pillsbury Road Pump Station - Hardy Rd. Construction Detour - Apr. 3, 2026

    On April 3, 2026, (approximately 1 day, weather permitting) Hardy Road will be closed to thru traffic. Read on...
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2025 Stormwater Outfall Inspections

Department Organizational Chart

Org chart showing John Trottier as Director of Engineering with six reports in two tiers