Tapcensus

Alaska

Yukon-Koyukuk Census Area drinking water quality

34 active public water systems serve 6,119 people in Yukon-Koyukuk Census Area. 4 are compliant, 30 had at least one EPA violation in the past three years, 14 are designated serious violators, and 6 carry a health flag.

Active systems 34 27 community systems
People served 6,119 by public water systems
Systems with violations 30 88% of active systems, past 3 years
Serious violators 14 6 systems carry a health flag

Needs attention

Ft. Yukon Public Water System AK2360256 · Fort Yukon · Community water system · Serves 665 6 rules violated in the past three years. Unresolved: Lead and Copper Rule.
Galena Wtp1 City AK2360272 · Galena · Community water system · Serves 490 5 rules violated in the past three years. Unresolved: Ground Water Rule.
Too'gha INC in Tanana AK2360109 · Tanana · Community water system · Serves 271 9 rules violated in the past three years. Unresolved: Lead and Copper Rule.
Ruby Water System AK2360866 · Ruby · Community water system · Serves 215 6 rules violated in the past three years. Unresolved: Stage 2 Disinfectants and Disinfection Byproducts Rule.
Grayling Water System AK2280066 · Grayling · Community water system · Serves 207 13 rules violated in the past three years. Unresolved: Revised Total Coliform Rule and Consumer Confidence Rule.
Arctic Village Water System AK2300222 · Arctic Village · Community water system · Serves 175 8 rules violated in the past three years. Unresolved: Lead and Copper Rule and Consumer Confidence Rule.
Allakaket Public Water System AK2300816 · Allakaket · Community water system · Serves 135 7 rules violated in the past three years. Unresolved: Stage 2 Disinfectants and Disinfection Byproducts Rule, Lead and Copper Rule, and Consumer Confidence Rule.
Hughes Public Water Supply AK2300272 · Hughes · Community water system · Serves 107 9 rules violated in the past three years. Unresolved: Lead and Copper Rule and Consumer Confidence Rule.
Anvik Water System AK2280171 · Anvik · Community water system · Serves 96 8 rules violated in the past three years. Unresolved: Ground Water Rule and Consumer Confidence Rule.
Rampart Washeteria AK2360816 · Rampart · Community water system · Serves 88 7 rules violated in the past three years. Unresolved: Ground Water Rule, Stage 2 Disinfectants and Disinfection Byproducts Rule, and Lead and Copper Rule.

6 more systems with a serious violator or health flag designation are in the lists below.

Community water systems

27 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Ft. Yukon Public Water System
Fort Yukon 		665 6 1
Galena Wtp1 City
Galena 		490 5 1
Nenana Municipal Water
Nenana 		486 1 0
McGrath Water System
Mcgrath 		341 5 0
Huslia Public Water System
Huslia 		323 4 2
Galena Wtp2 Gila
Galena 		290 4 1
Too'gha INC in Tanana
Tanana 		271 9 1
Nulato River Well
Nulato 		245 4 0
Ruby Water System
Ruby 		215 6 1
Kaltag Public Water System
Kaltag 		214 4 0
Grayling Water System
Grayling 		207 13 2
Minto Community Water System
Minto 		205 10 0
Holy Cross Water System
Holy Cross 		182 3 2
Venetie Water System
Venetie 		181 7 1
Arctic Village Water System
Arctic Village 		175 8 2
Allakaket Public Water System
Allakaket 		135 7 3
Circle Washeteria
Circle 		110 6 0
Hughes Public Water Supply
Hughes 		107 9 2
Anvik Water System
Anvik 		96 8 2
Manley Community Water System
Manley Hot Springs 		95 2 0
Rampart Washeteria
Rampart 		88 7 3
Koyukuk Safewater Facility
Koyukuk 		85 6 1
Beaver Water System
Beaver 		80 6 0
Chalkyitsik Village Water
Chalkyitsik 		76 7 2
Takotna Water System
Takotna 		70 7 1
Shageluk Water System
Shageluk 		60 8 1
Stevens Village Water System
Stevens Village 		28 6 2
Non-community systems (7: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Blm Arctic Interagency Visitor Center
Coldfoot 		130 0 0
Coldfoot Cafe
Coldfoot 		120 0 0
The Inn at Coldfoot
Coldfoot 		120 0 0
Monroes Monderosa
Nenana 		78 1 0
Yukon River Camp
Coldfoot 		59 0 0
Yksd Allakaket School
Allakaket 		52 6 0
Yksd Merreline Kangas / Ruby
Ruby 		40 3 1
Inactive systems (63, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Alaska records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.