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Counties → Pennsylvania

Washington County, Pennsylvania

SDWIS compliance plate

Sheet PA125 · Washington County 33 sys · 7,539 viol · #1002/3254

VIOL-SEVERE · HEALTH-LOW · RANK-UPPER · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-SMALL · BOOK-FULL

  • VIOL-SEVERE 90.9% flagged
  • HEALTH-LOW 13.5% health
  • RANK-UPPER #1002/3254
  • PHOTO-FINISH ±0.3 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 48%
  • SYS-SMALL 33 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Lawrence County ( -0.3 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Washington County ranks #1,002 of 3,254 counties by people served, and #42 of 68 counties in Pennsylvania. See methodology · corpus placement.

Washington County standing, lower-flagged corpus third

Flagged-system rate 90.9% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 13.5% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #1,002 of 3,254 · #42 of 68 in Pennsylvania.

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% Greene · lowest Lawrence · near Butler · near Sullivan · highest 66.7% 89.9% 90.6% 90.9% 91.8% 92.9% 100%

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

Water Systems

System Name Population Violations PFAS
Auth of Boro of Charleroi 27,000 641 Clean
Tri Cnty Jt Muni Auth 10,100 952 Clean
Bentleyville Muni Auth 2,600 202 -
Ellsworth Boro Water Dept 1,250 410 Clean
Avella Area School District 850 520 -
Donegal Township 820 372 -
South Park Mhc LLC 740 1 -
Marianna Muni Water Works 480 389 -
American Water Hauling LLC 435 0 -
American Bulk Hauling LLC 435 0 -
Washington Estates II Mhc LLC 373 1 -
Washington Estates Mhc LLC 358 1 -
Dean's Water Service, Inc. 150 28 -
Four Seasons Resort 100 167 -
Lone Pine Stop #1 100 52 -
Lone Pine Community Center 100 88 -
Dogwood Hills Golf Course 100 20 -
Bullpen Rustic Lodge 100 28 -
Cornerstone Care 100 1,131 -
Tc USA Pipeline Services LLC 50 262 -
Rough Cut Tavern 50 57 -
Mouse Trap 50 23 -
Lenharts Tavern 50 53 -
Canonsburg Sportsmen Associatn 50 64 -
Camp Agape 50 40 -
Stallion Oilfield Services 25 1,514 -
Houston Sunoco 25 54 -
American Legion Post 907 25 231 -
Split Rail Sporting Clays 25 46 -
Bsa Camp Annawanna 25 136 -
Culligan Store Sol of Wash Co 25 29 -
Glacier Water Serv Washington 25 27 -
W Pike Run Bulk Fill Station 25 0 -

Compare beyond Pennsylvania

Lower-flagged peers for Washington County

Cross-state counties nearest Washington County on flagged-system share (90.9%) and cumulative violation count (7,539). 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.