Our clients play an essential role in the PEER story. We pride ourselves in the long-lasting relationships we have formed with our valuable clients over the past 39 years.

PEER's strong work ethic and dedication to each organization listed below ensures client satisfaction with the services and work product we provide. We look forward to growing this list and building new, exciting partnerships with firms like yours on future endeavors. 


State & Local Government


  • Arlington County, VA Water Pollution Control Plant
  • Baltimore County, MD Department of Public Works
  • Baltimore, MD Department of Public Works
  • Boston, MA Water and Sewer Commission
  • City of Nashville, TN and Davidson County, TN
  • City of Philadelphia, PA Water Department
  • City of Richmond, VA Department of Public Works
  • Department of the Environment
  • District of Columbia (DDOT, DDOE, DPW, DGS)
  • District of Columbia Water and Sewer Authority (DC Water)
  • Maryland Department of General Services
  • Maryland Department of the Environment
  • Maryland Department of Transportation
  • Maryland Transit Authority
  • Massachusetts Department of Public Works
  • Massachusetts Water Resources Authority (MWRA)
  • Miami-Dade, FL Water and Sewer Authority
  • Prince Georges County, MD
  • Southwest Florida Water Management District
  • Washington Suburban Sanitary Commission (WSSC)

Federal Government


  • U.S. Air Force Civil Engineer Center (AFCEC)
  • U.S. Army Corps of Engineers
  • U.S. Department of Defense, Office of Secretary of the Environment
  • U.S. Naval Facilities Engineering Command, Washington District
  • U.S. Air National Guard, Headquarters
  • U.S. Environmental Protection Agency
  • U.S. Department of Energy, Headquarters and Oak Ridge, Tennessee
  • U.S. Department of Transportation, Federal Highway Administration
  • West Virginia Army National Guard

Private Sector


  • AECOM
  • Advanced Drainage Systems (ADS)
  • ARCADIS
  • Bechtel Corporation
  • Black & Veatch
  • Brinjac Engineering
  • Brown and Caldwell
  • Buchart Horn, Inc.
  • CDM Smith
  • CH2M HILL
  • Delon Hampton & Associates
  • Dewberry
  • EA Engineering, Science and Technology 
  • EBA Engineering, Inc.
  • EMA, Inc.
  • Fay, Spofford & Thorndike, Inc.
  • Gannett Flemming, Inc.
  • GHD
  • Gipe Associates, Inc.
  • Hazen and Sawyer, P.C.
  • IMS Engineers
  • Johnson, Mirmiran & Thompson (JMT)
  • KCI Technologies, Inc.
  • Layne Inliner, LLC
  • Limno-Tech, Inc.
  • Moseley Architects
  • O’Brien & Gere
  • Raftelis Financial Consultants, Inc.
  • The Louis Berger Group
  • Tucker, Young, Jackson, Tull, Inc. (TYJT)
  • URS Corporation
  • Vermont Energy Investment Corporation (VEIC)
  • Video Pipe Services Inc.
  • Washington Gas
  • Whitman Requardt & Associates, LLP