Virginia
- Aqua America - Virginia
- Fairfax County Water Authority (most of Fairfax County, major wholesaler to surrounding areas)
- City of Falls Church Department of Public Works (serves Falls Church and east-central Fairfax County)
- Loudoun Water (formerly Loudoun County Sanitation Authority), serves the unincorporated areas of Loudoun County
- City of Manassas Utilities (also wholesale)
- Prince William County Service Authority (most of Prince William County except Dale City)
- Virginia American Water Company (Alexandria, Dale City and Hopewell)
- City of Fairfax Utilities
- Town Of Leesburg Water
- Town of Purcellville Water
Read more about this topic: List Of United States Water Companies