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Counties → Washington

Ferry County, Washington

SDWIS compliance plate

Sheet WA019 · Ferry County 32 sys · 2,147 viol · #2700/3254

VIOL-SEVERE · HEALTH-MID · RANK-BOTTOM · BELOW-PEER · PFAS-NONE · SRC-GW · SYS-SMALL · BOOK-MOST

  • VIOL-SEVERE 81.3% flagged
  • HEALTH-MID 20.2% health
  • RANK-BOTTOM #2700/3254
  • BELOW-PEER 1.1 pp cleaner
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 97%
  • SYS-SMALL 32 systems
  • BOOK-MOST 6/7 fields

Nearest flagged-rate peer: Benton County (+ 1.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Ferry County ranks #2,700 of 3,254 counties by people served, and #36 of 39 counties in Washington. See methodology · corpus placement.

Ferry County standing, lower-flagged corpus third

Flagged-system rate 81.3% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 20.2% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Ferry County . Population served ranks #2,700 of 3,254 · #36 of 39 in Washington.

Flagged-rate neighbourhood around Ferry County

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

0% 20% 40% 60% 80% 100% Grant · lowest Benton · near Yakima · near Wahkiakum · highest 69.8% 81.3% 82.3% 83.3% 86.4% 86.8% 100%

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

Water Systems

System Name Population Violations PFAS
Republic City Of 1,673 35 -
Curlew Lake State Park 779 69 -
Inchelium Water District 540 110 -
Hartmans Log Cabin Resort Inc 397 10 -
Curlew Conservation Center 349 165 -
Curlew Water & Sewer District 316 66 -
Ferry County Fairgrounds 227 0 -
Lakeside Park 180 136 -
US Border Station - Danville 171 7 -
Orient Water Company 167 742 -
Curlew Kai Homeowner Water System 133 26 -
Martin Creek Community Assn 108 25 -
US Border Station - Laurier 99 5 -
North Twin Lakeview Assn 88 124 -
Danville Outpost 87 11 -
Black Beach Resort 81 7 -
Columbia Cedar 70 513 -
Tiffanys Resort 70 0 -
Key Mill Facility 65 24 -
Swan Lake Campground 44 4 -
Salishan Water System 43 2 -
Riverwood Water System 43 12 -
Fishermans Cove 31 2 -
Watering Hole, The 29 14 -
Fourth of July Creek Estates 29 0 -
Trailside Good Eats & Gifts 27 0 -
K2 Mine 25 0 -
Curlew Lake Heights Water System 22 5 -
North Lake RV Park 17 29 -
Kpm Water System 12 3 -
Carr Group 11 1 -
Park Addition Water Association 11 0 -

Compare beyond Washington

Lower-flagged peers for Ferry County

Cross-state counties nearest Ferry County on flagged-system share (81.3%) and cumulative violation count (2,147). 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.