Agency Members
- Alexandria Sanitation Authority
- Arlington County
- Augusta County Service Authority
- Blacksburg-VPI Sanitation Authority
- Chesterfield County
- City of Danville
- Fairfax County Integrated Sewer System
- Hampton Roads Sanitation District
- Hanover County
- Harrisonburg-Rockingham Regional Sewer Authority
- Henrico County
- Henry County Public Service Authority
- Hopewell Regional Wastewater Facility
- Loudoun Water
- City of Lynchburg
- City of Martinsville
- Pepper's Ferry Regional Wastewater Treatment Authority
- Prince William County Service Authority
- City of Richmond
- Rivanna Water and Sewer Authority
- South Central Wastewater Authority
- Spotsylvania County
- Stafford County
- Upper Occoquan Sewage Authority
- Western Virginia Water Authority
- City of Winchester
Associate Agency Members
- Amherst County Service Authority
- Town of Amherst
- Bedford County Public Service Authority
- City of Bedford
- Town of Blackstone
- Town of Bowling Green
- City of Buena Vista
- Campbell County
- Coeburn-Norton-Wise Regional Wastewater Treatment Authority
- Town of Colonial Beach
- Town of Culpeper
- D.C. Water and Sewer Authority
- Dinwiddie County Water Authority
- Fauquier County Water and Sanitation Authority
- Frederick County Sanitation Authority
- City of Fredericksburg
- Town of Front Royal
- Town of Kilmarnock
- Town of Leesburg
- Maury Service Authority
- New Kent County
- Town of New Market
- Town of Onancock
Powhatan County - Rapidan Service Authority
- Stoney Creek Sanitary District
- Sussex Service Authority
- Town of Tappahannock
- Town of Warsaw
- City of Waynesboro
- Town of Woodstock
Consultant Members
- Black & Veatch
- Camp, Dresser & McKee
- CH2M Hill
- Dewberry & Davis
- Greeley and Hansen
- Hazen and Sawyer, P. C.
- Malcolm Pirnie, Inc.
- O'Brien & Gere Engineers, Inc.
Associate Consultant Members
- Construction Dynamics Group
- Draper Aden Associates
- Earth Tech, Inc.
- Hayes, Seay, Mattern & Mattern, Inc.
- HDR Engineering, Inc.
- Olver Inc.
- Parsons Engineering
- R. Stuart Royer & Associates, Inc.
- Stearns & Wheler, LLC
- Timmons Group
- URS Corporation
- Whitman, Requardt & Associates, LLP
- Wiley & Wilson
- WW Associates, Inc.
