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Counties → Virginia

Prince William County, Virginia

SDWIS compliance plate

Sheet VA153 · Prince William County 45 sys · 1,444 viol · #172/3254

VIOL-SEVERE · HEALTH-MID · RANK-TOP · PHOTO-FINISH · PFAS-HIGH · SRC-GW · SYS-MID · BOOK-FULL

  • VIOL-SEVERE 84.4% flagged
  • HEALTH-MID 22.6% health
  • RANK-TOP #172/3254
  • PHOTO-FINISH ±0.2 pp
  • PFAS-HIGH 80.0% detect
  • SRC-GW GW lead 82%
  • SYS-MID 45 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Spotsylvania County ( -0.2 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Prince William County ranks #172 of 3,254 counties by people served, and #3 of 95 counties in Virginia. See methodology · corpus placement.

Prince William County standing, lower-flagged corpus third

Flagged-system rate 84.4% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 22.6% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 80.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #172 of 3,254 · #3 of 95 in Virginia.

Flagged-rate neighbourhood around Prince William County

Lowest/highest poles plus in-state counties nearest Prince William County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Prince Edward · lowest Spotsylvania · near Highland · highest 44.4% 83.3% 83.8% 84.2% 84.2% 84.4% 100%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

System Name Population Violations PFAS
Pwcsa - East 168,747 1 Detected
Pwcsa - West 136,409 0 Detected
Dale City 72,062 3 Detected
Quantico Marine Base-Mainside 19,000 204 Clean
Quantico McB-Camp Barrett 8,689 19 Detected
Bull Run Mountain/Evergreen (Brme) 1,803 13 -
Brentsville High School 1,600 46 -
Catharpin Square 968 268 -
The Nokesville School 867 0 -
Quantico, Town Of 650 16 -
Quantico McB-Camp Upshur 625 40 -
Bull Run Golf Club 420 46 -
Catharpin Park 400 0 -
Valley View Park 400 7 -
Blue Ridge Seafood 370 24 -
Linton Hall School 350 137 -
Woodbridge MHP LLC 320 26 -
Nokesville Mini Library 250 12 -
Bristow Manor Golf Club 219 50 -
Pwcsa - Hoadly Manor 207 0 -
Silver Lake Regional Park 200 14 -
Holy Family Academy 170 20 -
Buckhall Vfd 150 28 -
Nokesville Community Park 150 27 -
Public Safety Training Ctr. 150 8 -
Greenville Farm Campground 125 7 -
Renaissance Montessori 120 8 -
Nokesville Square 120 32 -
Pwcsa - Carters Grove 105 0 -
Independent Hill Library 100 38 -
Forest Greens Golf 85 20 -
Winery at Sunshine Ridge Farm 80 8 -
Fairfax Rod & Gun Club 75 1 -
Nokesville Church of the Brethren 68 18 -
Prince William Golf Course 65 16 -
Transportation Area (Pr.wm.co. Schools) 63 30 -
Farm Brewery at Broad Run 56 0 -
Camp Snyder 50 33 -
Greenwich Presbyterian Preschool 44 126 -
Nokesville Family Dentistry 33 4 -
Effingham Winery 28 3 -
Rainbow Riding Center 26 0 -
Brawner Farm 25 24 -
Nokesville Dollar General 25 3 -
Hector`s of Nokesville 25 64 -

Compare beyond Virginia

Lower-flagged peers for Prince William County

Cross-state counties nearest Prince William County on flagged-system share (84.4%) and cumulative violation count (1,444). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.