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Counties → Maryland

Washington County, Maryland

SDWIS compliance plate

Sheet MD043 · Washington County 89 sys · 1,539 viol · #493/3254

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

  • VIOL-SEVERE 85.4% flagged
  • HEALTH-MID 31.4% health
  • RANK-TOP #493/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-MID 33.3% detect
  • SRC-GW GW lead 63%
  • SYS-MID 89 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Talbot County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Washington County ranks #493 of 3,254 counties by people served, and #9 of 24 counties in Maryland. See methodology · corpus placement.

Washington County standing, lower-flagged corpus third

Flagged-system rate 85.4% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 31.4% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 33.3% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #493 of 3,254 · #9 of 24 in Maryland.

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% Baltimore city · lowest Somerset · near Talbot · near Kent · highest 38.5% 83.1% 83.8% 85.4% 85.4% 87.5% 96.6%

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

Water Systems

System Name Population Violations PFAS
City of Hagerstown 92,200 14 Clean
Boonsboro - Keedysville 4,250 147 Detected
Town of Smithsburg Distribution System 2,500 90 -
Town of Williamsport Distribution System 2,400 20 -
Town of Hancock 1,921 40 Clean
Sideling Hill State Park Exhibit Rt 68 W 1,603 1 -
Lakeside Village 1,575 6 -
Town of Sharpsburg 1,360 28 -
Town of Funkstown Distribution System 1,300 3 -
Greenbrier State Park 1,150 0 -
Highfield 1,141 11 -
Ac and T Big Pool 1,018 0 -
Ac and T and Classic Fuels, LLC 1,015 2 -
Sheetz Inc #209 911 0 -
Highs of Baltimore 906 0 -
Hagerstown Speedway 732 4 -
Mount Aetna 688 8 -
Camp Louise 606 0 -
Yogi Bears Jellystone Park 541 5 -
Warehouse Cinemas Leitersburg 510 9 -
Washington Co Agric Center 503 18 -
Town of Clear Spring 455 20 -
Old Forge Elementary School 378 36 -
Greenbrier Elementary School 370 5 -
Ringgold Church of Christ 357 6 -
Paradise Mennonite School 355 66 -
Antietam Recreation Camp 335 9 -
Washington Monument St Pk Ranger Sta 306 0 -
Mason Dixon Dragway 305 2 -
Washington Monument State Park-Picnic 300 0 -
Fountain Rock Elementary 260 31 -
Hagerstown Snug Harbor KOA 258 1 -
Dollar General #21089 257 14 -
Fahrney-Keedy Senior Living Community 250 9 -
Heritage Academy 240 11 -
Sandy Hook 220 7 -
The Lodge 210 9 -
Saint James School 200 67 -
Brook Lane Health Services 175 25 -
Ernst Market 163 6 -
Sweeties 154 0 -
Big Cork Vineyards 140 0 -
South County Little League 125 15 -
Elk Ridge Lake 120 49 -
South Mountain Rod and Gun 115 5 -
Clear Springs Country Diner 112 5 -
Hagerstown Kia 90 19 -
Hagerstown Honda Auto Place 90 14 -
Deer Lodge Mobile Home Park 87 29 -
El Rancho Mobile Home Park 86 56 -

Compare beyond Maryland

Lower-flagged peers for Washington County

Cross-state counties nearest Washington County on flagged-system share (85.4%) and cumulative violation count (1,539). 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.