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Counties → Washington

Adams County, Washington

SDWIS compliance plate

Sheet WA001 · Adams County 48 sys · 3,951 viol · #1528/3254

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

  • VIOL-SEVERE 93.8% flagged
  • HEALTH-LOW 9.1% health
  • RANK-MID #1528/3254
  • PHOTO-FINISH ±0.2 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 98%
  • SYS-MID 48 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Whitman County (+ 0.2 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Adams County ranks #1,528 of 3,254 counties by people served, and #30 of 39 counties in Washington. See methodology · corpus placement.

Adams County standing, mid-flagged corpus third

Flagged-system rate 93.8% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 9.1% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #1,528 of 3,254 · #30 of 39 in Washington.

Flagged-rate neighbourhood around Adams County

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

0% 20% 40% 60% 80% 100% Grant · lowest Adams · this county Kitsap · near Wahkiakum · highest 69.8% 93.5% 93.8% 93.9% 94.1% 94.3% 100%

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

Water Systems

System Name Population Violations PFAS
Othello Water Department 8,755 159 Clean
Hatton Coulee Rest Area 3,882 8 -
Schrag Eb/Wb Rest Areas 3,734 51 -
Ritzville Water Department 1,725 166 -
Lind Town Of 903 44 -
Adams County Water Dist #1 870 25 -
Hgh Inc Water System 613 80 -
Adams County Fair 503 26 -
Othello Manor LLC 400 91 -
Golden Plains MHP #1 360 212 -
Washtucna Water Department 250 76 -
Summerset West Water Association 240 38 -
Saddle Mountain Water Assoc. 219 40 -
Bruce Water System 210 98 -
Othello Country Club Water Assn 208 42 -
Radar Community LLC 200 46 -
Iglesia Bethel 197 27 -
Bird Dog Family Ltd Partnership II 186 20 -
Warden Hutterian Brethren 1 171 25 -
Sportsman Trailer Park 151 172 -
Bayer Western Production Co. 124 4 -
Stahl Hutterian Brethren 122 12 -
Hatton Town Of 105 241 -
Sunburst Estates Water Assn 100 74 -
Meadow Lane Water Assn 98 44 -
Schaake Rd Housing 96 2 -
Radar 2 Farmworker Housing 96 4 -
Fairview Domestic Water Assn 89 67 -
HI Lo Homeowners Assn 87 52 -
KTW Orchards 81 0 -
West Side Mobile Court 80 75 -
SECT 11 DIV 1 Ridgeview Water Assn 79 180 -
Schoonover Hutterian Brethren 73 95 -
Country Cousins 66 2 -
National Food NW - Lind 61 111 -
Rainier Tracts Water Assn 61 193 -
Basin View Water Association 60 63 -
Highland Estates Water System 53 31 -
SM West Farmworker Housing 52 0 -
Klingeman Well 42 700 -
Big B Truck Stop 41 51 -
Sunset Acres Water Association 40 20 -
South Othello Water Users 35 1 -
Radar Water Association 34 34 -
Crestview Water Association 31 76 -
Country Lane East 27 355 -
Monsanto Cunningham Rd 25 0 -
Four Seasons Campground 15 18 -

Compare beyond Washington

Mid-flagged peers for Adams County

Cross-state counties nearest Adams County on flagged-system share (93.8%) and cumulative violation count (3,951). 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.