Water quality for ZIP code 99777
ZIP 99777 covers Tanana in Yukon-Koyukuk Census Area, Alaska, one of 32 ZIP codes in the county. 34 active public water systems serve the county; 30 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Yukon-Koyukuk Census Area
26 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Manley Community Water System Manley Hot Springs |
95 | 2 | 43.3 mi | |
| Rampart Washeteria Rampart |
88 | 7 | 55.5 mi | |
| Minto Community Water System Minto |
205 | 10 | 77.0 mi | |
| Hughes Public Water Supply Hughes |
107 | 9 | 84.7 mi | |
| Allakaket Public Water System Allakaket |
135 | 7 | 92.2 mi | |
| Nenana Municipal Water Nenana |
486 | 1 | 98.0 mi | |
| Stevens Village Water System Stevens Village |
28 | 6 | 99.0 mi | |
| Ruby Water System Ruby |
215 | 6 | 107.5 mi | |
| Galena Wtp1 City Galena |
490 | 5 | 146.4 mi | |
| Galena Wtp2 Gila Galena |
290 | 4 | 148.5 mi | |
| Beaver Water System Beaver |
80 | 6 | 151.2 mi | |
| Koyukuk Safewater Facility Koyukuk |
85 | 6 | 168.1 mi | |
| Nulato River Well Nulato |
245 | 4 | 182.2 mi | |
| McGrath Water System Mcgrath |
341 | 5 | 192.2 mi | |
| Takotna Water System Takotna |
70 | 7 | 199.2 mi | |
| Venetie Water System Venetie |
181 | 7 | 199.2 mi | |
| Kaltag Public Water System Kaltag |
214 | 4 | 207.9 mi | |
| Ft. Yukon Public Water System Fort Yukon |
665 | 6 | 211.0 mi | |
| Circle Washeteria Circle |
110 | 6 | 230.3 mi | |
| Chalkyitsik Village Water Chalkyitsik |
76 | 7 | 252.3 mi | |
| Arctic Village Water System Arctic Village |
175 | 8 | 270.1 mi | |
| Huslia Public Water System Huslia |
323 | 4 | 288.9 mi | |
| Shageluk Water System Shageluk |
60 | 8 | 290.1 mi | |
| Grayling Water System Grayling |
207 | 13 | 291.9 mi | |
| Anvik Water System Anvik |
96 | 8 | 307.3 mi |
Non-community systems in Yukon-Koyukuk Census Area (7: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Yksd Allakaket School Allakaket |
52 | 6 | 0 | |
|
Monroes Monderosa Nenana |
78 | 1 | 0 | |
|
Yksd Merreline Kangas / Ruby Ruby |
40 | 3 | 1 | |
|
Blm Arctic Interagency Visitor Center Coldfoot |
130 | 0 | 0 | |
|
Coldfoot Cafe Coldfoot |
120 | 0 | 0 | |
|
The Inn at Coldfoot Coldfoot |
120 | 0 | 0 | |
|
Yukon River Camp Coldfoot |
59 | 0 | 0 |
About this data
Water systems are matched to Yukon-Koyukuk Census Area, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
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. Retrieved from ECHO on Oct 11, 2026.