Water quality for ZIP code 99635
ZIP 99635 covers Tyonek in Kenai Peninsula Borough, Alaska, one of 15 ZIP codes in the county. 205 active public water systems serve the county; 111 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Kenai Peninsula Borough
26 systems, largest first| System | Serves | Status | Rules violated, 3 yr |
|---|---|---|---|
| Kenai Water System Kenai |
5,700 | 0 | |
| Soldotna Soldotna |
4,807 | 1 | |
| Seward Seward |
3,324 | 1 | |
| Anchor Point Safe Water Corporation Anchor Point |
1,000 | 1 | |
| Seward Marine Industrial Cent Seward |
545 | 1 | |
| Nikishka Bay Nikiski |
470 | 1 | |
| Seldovia Water System Seldovia |
418 | 5 | |
| Nikolaevsk Community Water System Nikolaevsk |
360 | 6 | |
| Voznesenka Village Voznesenka |
300 | 0 | |
| Nanwalek Nanwalek |
281 | 11 | |
| Tyonek Water System Tyonek |
206 | 2 | |
| Port Graham Port Graham |
180 | 8 | |
| KB Sub. Water Service Assoc. Soldotna |
170 | 4 | |
| Kachemak Selo #3 Homer |
150 | 5 | |
| Nikiski Village TC Nikiski |
150 | 1 | |
| Willowbrook North Kenai |
150 | 1 | |
| Salmon Creek Trailer Court Seward |
125 | 5 | |
| Highland Pride Mobile Home Park Soldotna |
100 | 6 | |
| Homerun Oil Co. Water Hauler Homer |
100 | 0 | |
| Quickdraw H2o Homer |
100 | 0 | |
| College Park Home Owners Assoc Soldotna |
85 | 3 | |
| Ashton Park Soldotna |
75 | 3 | |
| Beachside Estates Kenai |
60 | 1 | |
| Bay View Trailer Court Seward |
51 | 5 | |
| Sterling Moose River Manor Sterling |
33 | 7 |
Non-community systems in Kenai Peninsula Borough (178: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Kenai Peninsula Borough, the county this ZIP code lies in, largest 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.
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.