Prince William County, Virginia — public water systems
At a glance
36 active public water systems are filed under Prince William County, Virginia in EPA's SDWIS records, together reporting 414,096 people served. The largest is Pwcsa - East, which reports serving 168,747 people. 10 are community water systems serving people where they live; the other 26 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
36
Population served
414.1K
Community systems
10
Groundwater share
80.6%
How does Prince William County compare with other Virginia counties?
Prince William County has the 19th-most active public water systems among the 138 counties listed for active Virginia systems in EPA records; among the 99 with 3 or more systems, the median has 20. Its systems report 414,096 people served in total, the 3rd-largest county figure in the state and 5.5% of the statewide total. The average system here reports serving 11,503 people, about 3.7 times the Virginia average of 3,122. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.
Where does Prince William County's drinking water come from?
By primary water source, Prince William County's active systems draw on groundwater (29, 81%), purchased surface water (6, 17%) and surface water (1, 2.8%). Overall, 81% rely mainly on groundwater (including purchased groundwater) and 19% on surface water, compared with 89% and 11% across Virginia. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Pwcsa - East, draws primarily on purchased surface water.
What kinds of water systems operate in Prince William County?
Prince William County's active systems break down as 10 community systems (28%), 8 non-transient non-community systems (22%) and 18 transient non-community systems (50%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (56%), local government (33%) and federal government (11%).
Water systems in Prince William County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Pwcsa - East | Prince William | 168,747 | Community | Purchased surface water |
| 2 | Pwcsa - West | Prince William | 136,409 | Community | Purchased surface water |
| 3 | Dale City | Prince William | 72,062 | Community | Purchased surface water |
| 4 | Mcb Quantico - Mainside | Prince William | 19,000 | Community | Surface water |
| 5 | Quantico Mcb-Camp Barrett | Prince William | 8,689 | Community | Purchased surface water |
| 6 | Bull Run Mountain/Evergreen (Brme) | Prince William | 1,803 | Community | Groundwater |
| 7 | Brentsville High School | Prince William | 1,600 | Non-transient non-community | Groundwater |
| 8 | The Nokesville School | Prince William | 867 | Non-transient non-community | Groundwater |
| 9 | Quantico, Town of | Prince William | 650 | Community | Purchased surface water |
| 10 | Quantico Mcb-Camp Upshur | Prince William | 625 | Non-transient non-community | Groundwater |
| 11 | Bull Run Golf Club | Prince William | 420 | Transient non-community | Groundwater |
| 12 | Blue Ridge Seafood | Prince William | 370 | Transient non-community | Groundwater |
| 13 | Linton Hall School | Prince William | 350 | Community | Groundwater |
| 14 | Woodbridge MHP LLC | Prince William | 320 | Community | Groundwater |
| 15 | Nokesville Mini Library | Prince William | 250 | Transient non-community | Groundwater |
| 16 | Bristow Manor Golf Club | Prince William | 219 | Transient non-community | Groundwater |
| 17 | Pwcsa - Hoadly Manor | Prince William | 207 | Community | Purchased surface water |
| 18 | Holy Family Academy | Prince William | 170 | Non-transient non-community | Groundwater |
| 19 | Public Safety Training Ctr. | Prince William | 150 | Non-transient non-community | Groundwater |
| 20 | Buckhall Vfd | Prince William | 150 | Transient non-community | Groundwater |
| 21 | Greenville Farm Campground | Prince William | 125 | Transient non-community | Groundwater |
| 22 | Nokesville Square | Prince William | 120 | Transient non-community | Groundwater |
| 23 | Renaissance Montessori | Prince William | 120 | Non-transient non-community | Groundwater |
| 24 | Independent Hill Library | Prince William | 100 | Transient non-community | Groundwater |
| 25 | Winery at Sunshine Ridge Farm | Prince William | 80 | Transient non-community | Groundwater |
| 26 | Fairfax Rod & Gun Club | Prince William | 75 | Transient non-community | Groundwater |
| 27 | Nokesville Church of the Brethren | Prince William | 68 | Non-transient non-community | Groundwater |
| 28 | Transportation Area (Pr.Wm.Co. Schools) | Prince William | 63 | Non-transient non-community | Groundwater |
| 29 | Farm Brewery at Broad Run | Prince William | 56 | Transient non-community | Groundwater |
| 30 | Camp Snyder | Prince William | 50 | Transient non-community | Groundwater |
| 31 | Greenwich Presbyterian Preschool | Prince William | 44 | Transient non-community | Groundwater |
| 32 | Nokesville Family Dentistry | Prince William | 33 | Transient non-community | Groundwater |
| 33 | Effingham Winery | Prince William | 28 | Transient non-community | Groundwater |
| 34 | Rainbow Riding Center | Prince William | 26 | Transient non-community | Groundwater |
| 35 | Brawner Farm | Prince William | 25 | Transient non-community | Groundwater |
| 36 | Hector`S of Nokesville | Prince William | 25 | Transient non-community | Groundwater |
Prince William County water systems: frequently asked questions
How many public water systems are in Prince William County, Virginia?
EPA's SDWIS records file 36 active public water systems under Prince William County, Virginia: 10 community systems (28%), 8 non-transient non-community systems (22%) and 18 transient non-community systems (50%).
Who supplies drinking water in Prince William County, VA?
The largest community water systems filed under Prince William County are Pwcsa - East (168,747 people served), Pwcsa - West (136,409 people served) and Dale City (72,062 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.
Does Prince William County's drinking water come from groundwater or surface water?
Of the 36 active public water systems in Prince William County, 81% draw mainly on groundwater and 19% on surface water, counting purchased supplies. The largest system, Pwcsa - East, uses purchased surface water.
Where can I find a water quality report for Prince William County?
Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 10 community systems are filed under Prince William County, so the report to look for is the one from the system that supplies your address.
How can I check violations for a water system in Prince William County?
Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.
More Virginia water systems
- All Virginia public water systems· 2,420 active
- Westmoreland County· 41 systems
- Nelson County· 38 systems
- Goochland County· 38 systems
- Hanover County· 38 systems
- Spotsylvania County· 36 systems
- Isle of Wight County· 34 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Public water systems in Prince William County, Virginia”, https://aquacensus.com/water-systems/virginia/prince-william (data as of October 1, 2026).