“When I made the decision to start this company, one thing was very clear to me – I knew there was absolutely no advantage, competitive or otherwise, to simply adopting ‘accepted industry practices’.

“I think the people we do business with – both directly and indirectly – will agree that we’ve always been noted for innovation. And, as we’ve proven over more than a decade, our innovative practices translate not only to increased efficiencies and cost savings, but to enhanced quality assurance as well.

“From the outset, I was determined to build this company on the strength of our expertise, our reliability, and our absolute integrity. And, in a very real sense, those qualities continue to reflect what SDE is all about.”

Stacey DePasquale, P.E., BCEE, CPSWQ, President


Core Services: Storm Water and Water Quality | Wastewater Collection Systems | Construction Oversight and Management

Client Listings

Representative listing of clients SDE has worked with since the company was established in 1999.

  • Boston Water & Sewer Commission
  • CH2M Hill
  • Stantec
  • CDM Smith
  • Tighe & Bond
  • Kleinfelder/SEA Consultants
  • Woodard & Curran
  • Brown and Caldwell
  • Weston & Sampson Engineers


Project Listings

Representative listing of contracts SDE has been awarded over the past five years, either as Prime Consultant or Subcontractor.


Dates indicate the year in which these projects commenced.

  • llicit Discharge Detection and Elimination, Watertown, MA (2007)
  • Fort Point Channel Hydraulic Evaluation and Water Quality Assessment, Boston, MA (2012)
  • Lawton Valley Water Treatment Facility and Station One Water Treatment Facility, Newport, RI (2012)
  • Citywide Illegal Connection Investigation/Phase 3, Boston, MA (2012)
  • Industrial Storm Water Pollution Prevention Program, Boston, MA (2012)
  • Water Meters and Automatic Meter Reading System, Lawrence, MA (2012)