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Counties → Alaska

Yukon-Koyukuk Census Area, Alaska

SDWIS compliance plate

Sheet AK290 · Yukon-Koyukuk Census Area 36 sys · 22,873 viol · #2682/3254

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

  • VIOL-SEVERE 94.4% flagged
  • HEALTH-LOW 5.3% health
  • RANK-BOTTOM #2682/3254
  • BELOW-PEER 2.0 pp cleaner
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 64%
  • SYS-SMALL 36 systems
  • BOOK-MOST 6/7 fields

Nearest flagged-rate peer: Denali Borough (+ 2 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Yukon-Koyukuk Census Area ranks #2,682 of 3,254 counties by people served, and #20 of 26 counties in Alaska. See methodology · corpus placement.

Yukon-Koyukuk Census Area standing, mid-flagged corpus third

Flagged-system rate 94.4% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 5.3% is health-based share at or below the lower third (≤ 10.3%) . No UCMR5 tests in this extract for Yukon-Koyukuk Census Area . Population served ranks #2,682 of 3,254 · #20 of 26 in Alaska.

Flagged-rate neighbourhood around Yukon-Koyukuk Census Area

Lowest/highest poles plus in-state counties nearest Yukon-Koyukuk Census Area on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% North Slope Bo · lowest Denali Borough · near Matanuska-Susi · near 92.3% 94.4% 96.4% 97% 97.4% 100%

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

Water Systems

System Name Population Violations PFAS
Ft. Yukon Public Water System 665 737 -
Galena Wtp1 - City 490 474 -
Nenana Municipal Water 486 224 -
McGrath Water System 341 586 -
Huslia Public Water System 323 178 -
Galena Wtp2 - Gila 290 315 -
Too'gha Inc - in Tanana 271 978 -
Nulato River Well 245 326 -
Ruby Water System 215 171 -
Kaltag Public Water System 214 808 -
Grayling Water System 207 2,201 -
Minto Community Water System 205 652 -
Holy Cross Water System 182 319 -
Venetie Water System 181 1,005 -
Arctic Village Water System 175 1,738 -
Allakaket Public Water System 135 527 -
Blm Arctic Interagency Visitor Center 130 5 -
Coldfoot Cafe 120 68 -
The Inn at Coldfoot 120 37 -
Circle Washeteria 110 886 -
Hughes Public Water Supply 107 690 -
Anvik Water System 96 1,010 -
Manley Community Water System 95 87 -
Rampart Washeteria 88 642 -
Koyukuk Safewater Facility 85 1,516 -
Beaver Water System 80 992 -
Monroes Monderosa 78 34 -
Chalkyitsik Village Water 76 1,568 -
Takotna Water System 70 1,362 -
Shageluk Water System 60 980 -
Yukon River Camp 59 63 -
Yksd - Allakaket School 52 778 -
Yksd - Merreline Kangas / Ruby 40 138 -
Taiga Ventures - Birch Creek Camp 4A 34 0 -
Taiga Ventures - Birch Creek Camp 6A 34 0 -
Stevens Village Water System 28 778 -

Compare beyond Alaska

Mid-flagged peers for Yukon-Koyukuk Census Area

Cross-state counties nearest Yukon-Koyukuk Census Area on flagged-system share (94.4%) and cumulative violation count (22,873). 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.