Regulated Water & Sewer Companies
- Aqua Virginia, Inc.
- Aquarius Water Systems, Inc.
- Blue Ridge Water Agency, Inc.
- Bluefield Valley Water Works, Inc.
- Brookfield Water Company, Inc.
- Buckland Water and Sanitation Assets Corporation
- C & P Isle of Wight Water Company
- Cascade Mountain Water Company, Inc.
- Central Water Company, Inc.
- Central Water System, Inc.
- Commonwealth Utilities, Inc.
- Founders Bridge Utility Company, Inc.
- Groundhog Mountain Water and Sewer Company, Inc.
- Harbour East Village Sewage Disposal Corp.
- High Knob Utilities, Inc.
- Homestead Water Company, L.C.
- Keswick Estate Utilities, Inc.
- Mariner's Landing Water & Sewer Company, Inc.
- Montvale Water, Inc.
- Massanutten Public Service Corporation
- Northern Neck Water, Inc.
- Park Place Water Works, Inc.
- Peacock Hill Service Company
- Po River Water and Sewer Company
- Reston RELAC, LLC.
- Santillane Water Company, Inc.
- Sedley Water Company
- Sommersby Water Company, Inc.
- Sunset Bay Utilities, Inc.
- T-L Water Company (Mountain Lakes Water Company)
- Thomas Bridge Water Corporation
- Trail's End Utility Company, Inc.
- Virginia American Water Company
- Virginia Ridge Water Company, Inc.
- Woodhaven Water Company
Non-Rate Regulated Water and Wastewater Companies
- Broad Run Service Corporation
- Cedar Ridge Water Company
- East Coast Transport, Inc.
- Idlewood Shores Water Company
- Inglewood Water Company, LLC
- Iron Gate Water Company
- Lundie Utilities, Inc.
- Old Dominion Utility Services, Inc.
- Public Service Company of Virginia, Inc.
- Red Hill Utility, LLC
- SES Mid-Atlantic Utilities, Inc.
- Staroverlake Water Company, Inc.
- Stripers Landing Water Company
- Sydnor Utilities, Inc.