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Counties → Utah

Washington County, Utah

SDWIS compliance plate

Sheet UT053 · Washington County 61 sys · 14,833 viol · #283/3254

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

  • VIOL-SEVERE 96.7% flagged
  • HEALTH-LOW 4.3% health
  • RANK-TOP #283/3254
  • PHOTO-FINISH ±0.1 pp
  • PFAS-LOW 9.1% detect
  • SRC-GW GW lead 80%
  • SYS-MID 61 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Wasatch County ( -0.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Washington County ranks #283 of 3,254 counties by people served, and #5 of 29 counties in Utah. See methodology · corpus placement.

Washington County standing, mid-flagged corpus third

Flagged-system rate 96.7% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 4.3% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 9.1% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #283 of 3,254 · #5 of 29 in Utah.

Flagged-rate neighbourhood around Washington County

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

0% 20% 40% 60% 80% 100% Grand · lowest Wasatch · near Tooele · near Piute · highest 85.7% 96.4% 96.6% 96.7% 97.1% 97.4% 100%

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

Water Systems

System Name Population Violations PFAS
St George City Water System 105,240 209 Clean
Washington City 45,865 201 Clean
Hurricane City 25,555 371 Clean
Utah Tech Culinary Water System 12,000 7 -
Ivins 10,465 115 Clean
Santa Clara City 9,000 415 Clean
Hildale - Colorado City 6,100 991 Detected
Black Desert Resort Water System 5,300 0 -
La Verkin City Water System 4,500 48 Clean
Zion Canyon Water System 3,380 25 Clean
Enterprise Town Water System 2,200 226 -
Toquerville Town Water System 1,931 58 -
Virgin 1,512 84 Clean
Diamond Valley Acres 1,340 680 -
Winchester Hills Water Co 950 612 -
Dammeron Valley Water Works LLC 885 155 -
Leeds Domestic Water Users Association 800 137 -
Mountain Springs Water Co 660 89 -
Gunlock State Park 640 3 -
Springdale Town Water System 529 362 -
Zion Np- Kolob Visitor Center 503 34 -
Veyo Culinary Water Assn 500 153 -
Zion Np - Sinawava Temple 500 17 -
Dixie Deer Ssd 482 365 -
Kwu Inc 460 59 -
Big Plains Water Ssd - Apple Valley 450 1,046 -
Washington County Wcd - Sand Hollow 425 702 -
Angell Springs Ssd 358 278 -
Harmony Farms Water Users 314 587 -
Camp Kolob - Spring Creek 300 59 -
Camp Kolob - Oak Valley Girl's Camp 300 23 -
Snow Canyon State Park 266 3 -
Little Creek Travel Center 250 76 -
Rockville Pipeline Co 240 184 -
Virgin Sky 240 15 -
Kings Row Estates 234 1 -
Big Plains Water Ssd - Cedar Point 232 1,897 -
New Harmony Water System 200 222 -
Zion Under Canvas 165 95 -
Washington County Wcd - Cottam 130 30 Clean
Harmony Heights Water Company 120 28 -
Gunlock Special Service District 118 195 Clean
Pine Valley Mt Farms 100 131 -
Washington County Wcd - Kolob Wells 100 20 -
Holmstead Ranch LLC 100 6 -
Terrace Drive Subdivision 90 19 -
Canyons RV Resort 80 0 -
North Valley Ranches Sub 78 956 -
Spruce Culinary Water Co 75 25 -
Big Plains Water Ssd - Canaan Ranch 62 46 -

Compare beyond Utah

Mid-flagged peers for Washington County

Cross-state counties nearest Washington County on flagged-system share (96.7%) and cumulative violation count (14,833). 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.