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Counties → Alaska

Yukon-Koyukuk Census Area County, Alaska

Water Systems
36
Population Served
6,187
Total Violations
22,873
1,206 health-based
PFAS Detected
0
of 0 tested

Violation Analysis

94.4%
Systems with Violations
635.4
Avg Violations per System
5.3%
Health-Based Violations

Water Source Types

GW
23 systems (64%)
SW
13 systems (36%)

Compliance Snapshot

Yukon-Koyukuk Census Area Alaska water systems by violation status, EPA SDWIS records.

No violations on record (2) One or more violations (34)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

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 -

Other Counties in Alaska

Anchorage Municipality County
156 systems · 305,331 served · 22,461 violations
Fairbanks North Star Borough County
65 systems · 160,456 served · 6,815 violations
Matanuska-Susitna Borough County
345 systems · 91,419 served · 20,535 violations
Kenai Peninsula Borough County
201 systems · 47,039 served · 23,648 violations
Juneau City and Borough County
11 systems · 40,575 served · 2,414 violations
North Slope Borough County
78 systems · 28,722 served · 5,005 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Yukon-Koyukuk Census Area County? ▼
Yukon-Koyukuk Census Area County has 22,873 total drinking water violations across 36 water systems, of which 1,206 are health-based violations. 94.4% of systems have at least one violation.
How many people get water from Yukon-Koyukuk Census Area County systems? ▼
Water systems in Yukon-Koyukuk Census Area County serve approximately 6,187 people through 36 public water systems.
Has PFAS been detected in Yukon-Koyukuk Census Area County water? ▼
No PFAS testing data is available for water systems in Yukon-Koyukuk Census Area County.
What types of water sources supply Yukon-Koyukuk Census Area County? ▼
Water systems in Yukon-Koyukuk Census Area County use GW (23 systems), SW (13 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 5.3% of Yukon-Koyukuk Census Area County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - 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 Editorial

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.