Water quality for ZIP code 99580
ZIP 99580 covers Ekwok in Dillingham Census Area, Alaska, one of 7 ZIP codes in the county. 24 active public water systems serve the county; 20 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Dillingham Census Area
10 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Koliganek Water System Koliganek |
170 | 3 | 26.2 mi | |
| Bbahc Kanakanak Hospital Dillingham |
305 | 0 | 42.4 mi | |
| Nina Nicholson Subdivision Dillingham |
31 | 6 | 42.4 mi | |
| Salmon Roe Dillingham |
31 | 2 | 42.4 mi | |
| Dillingham Water System Dillingham |
2,419 | 7 | 42.5 mi | |
| Clarks Point Water System Clarks Point |
128 | 6 | 52.5 mi | |
| Manokotak Water System Manokotak |
293 | 8 | 59.3 mi | |
| Manokotak Heights W/s Manokotak |
215 | 7 | 61.4 mi | |
| Twin Hills Water System Twin Hills |
87 | 7 | 100.7 mi | |
| Togiak Water System Togiak |
910 | 1 | 104.4 mi |
Non-community systems in Dillingham Census Area (13: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Swrsd Koliganek School Koliganek |
72 | 1 | 0 | |
|
Silver Bay Seafoods Wood River Dillingham |
300 | 1 | 0 | |
|
Swrsd Aleknagik Northshore Aleknagik |
38 | 0 | 0 | |
|
Bristol Bay Native Assoc. Dillingham |
120 | 2 | 0 | |
|
Tikchik Narrows Lodge Dillingham |
58 | 3 | 0 | |
|
Bristol Bay Lodge Dillingham |
46 | 3 | 1 | |
|
Alaska Airlines Dillingham Dillingham |
160 | 1 | 0 | |
|
Dillingham Courthouse Dillingham |
219 | 0 | 0 | |
|
Ekuk Fisheries Dillingham |
150 | 3 | 1 | |
|
Swrsd Manokotak Heights School Manokotak |
177 | 0 | 0 | |
|
Swrsd Twin Hills School Dillingham |
38 | 1 | 0 | |
|
Swrsd Togiak K12 School Togiak |
280 | 1 | 0 | |
|
North Pacific Seafoods Togiak Fisheries Togiak |
100 | 2 | 1 |
About this data
Water systems are matched to Dillingham 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.