KOBUK WATER SYSTEM
Alaska — Community Water System — PWSID: AK2340565
System Information
| PWSID | AK2340565 |
| System Name | KOBUK WATER SYSTEM |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jul 11, 1984 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | Alaska |
| City | KOBUK |
| ZIP Code | 99751-0019 |
| Address | P.O. BOX 51020 |
| Organization | CITY OF KOBUK |
| Phone | 907-948-2217 |
Population & Service
| Population Served | 93 |
| Service Connections | 31 |
Drinking Water Violations (760)
This water system has 760 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | — | — | Archived | Dec 31, 2025 | — | |
| Aug 1, 2025 | Aug 31, 2025 | MON | No | Yes | — | — | — | Resolved | Aug 31, 2025 | — | |
| Aug 1, 2025 | Aug 31, 2025 | MR | No | Yes | — | — | — | Resolved | Aug 31, 2025 | — | |
| Aug 1, 2025 | Aug 31, 2025 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Aug 31, 2025 | — | |
| May 1, 2025 | May 31, 2025 | MR | No | Yes | — | — | — | Resolved | May 31, 2025 | — | |
| Apr 1, 2025 | Apr 30, 2025 | MR | No | Yes | — | — | — | Resolved | Apr 30, 2025 | — | |
| Feb 1, 2025 | Feb 28, 2025 | MR | No | Yes | — | — | — | Resolved | Feb 28, 2025 | — | |
| Jan 1, 2025 | Jan 31, 2025 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jan 31, 2025 | — | |
| Jan 1, 2025 | Jan 31, 2025 | MON | No | Yes | — | — | — | Resolved | Jan 31, 2025 | — | |
| Dec 1, 2024 | Dec 31, 2024 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2024 | — | |
| Dec 1, 2024 | Dec 31, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2024 | — | |
| Oct 1, 2024 | Oct 31, 2024 | MON | No | Yes | — | — | — | Resolved | Oct 31, 2024 | — | |
| Oct 1, 2024 | Oct 31, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Oct 31, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | — | — | Resolved | Sep 30, 2024 | — | |
| Aug 1, 2024 | — | TT | Yes | No | — | — | — | Resolved | May 15, 2025 | — | |
| Jul 1, 2024 | Jul 31, 2024 | MR | No | Yes | — | — | — | Resolved | Jul 31, 2024 | — | |
| Jun 1, 2024 | Jun 30, 2024 | MR | No | No | — | — | — | Resolved | Jun 30, 2024 | — | |
| May 1, 2024 | May 31, 2024 | MR | No | Yes | — | — | — | Resolved | May 31, 2024 | — | |
| Apr 2, 2024 | — | Other | No | No | — | — | — | Resolved | May 10, 2024 | — | |
| Apr 1, 2024 | Apr 30, 2024 | MR | No | Yes | — | — | — | Resolved | Apr 30, 2024 | — | |
| Mar 1, 2024 | Mar 31, 2024 | TT | Yes | No | — | — | — | Resolved | Mar 31, 2024 | — | |
| Mar 1, 2024 | Mar 31, 2024 | TT | Yes | No | — | — | — | Resolved | Mar 31, 2024 | — | |
| Mar 1, 2024 | Mar 31, 2024 | TT | Yes | No | — | — | — | Resolved | Mar 31, 2024 | — | |
| Feb 1, 2024 | Feb 29, 2024 | TT | Yes | No | — | — | — | Resolved | Feb 29, 2024 | — | |
| Feb 1, 2024 | Feb 29, 2024 | TT | Yes | No | — | — | — | Resolved | Feb 29, 2024 | — | |
| Feb 1, 2024 | Feb 29, 2024 | TT | Yes | No | — | — | — | Resolved | Feb 29, 2024 | — | |
| Jan 1, 2024 | Jan 31, 2024 | TT | Yes | No | — | — | — | Resolved | Jan 31, 2024 | — | |
| Jan 1, 2024 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Jan 1, 2024 | Jan 31, 2024 | TT | Yes | No | — | — | — | Resolved | Jan 31, 2024 | — | |
| Jan 1, 2024 | Jan 31, 2024 | TT | Yes | No | — | — | — | Resolved | Jan 31, 2024 | — | |
| Nov 1, 2023 | Nov 30, 2023 | MON | No | Yes | — | — | — | Resolved | Nov 30, 2023 | — | |
| Nov 1, 2023 | Nov 30, 2023 | MR | No | Yes | — | — | — | Resolved | Nov 30, 2023 | — | |
| Oct 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 4, 2023 | — | |
| Oct 1, 2023 | Oct 31, 2023 | MR | No | Yes | — | — | — | Resolved | Oct 31, 2023 | — | |
| Aug 1, 2023 | Aug 31, 2023 | MR | No | Yes | — | — | — | Resolved | Aug 31, 2023 | — | |
| Jul 1, 2023 | Jul 31, 2023 | MR | No | Yes | — | — | — | Resolved | Jul 31, 2023 | — | |
| Jun 1, 2023 | Jun 30, 2023 | MR | No | Yes | — | — | — | Resolved | Jun 30, 2023 | — | |
| May 1, 2023 | May 31, 2023 | MR | No | Yes | — | — | — | Resolved | May 31, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | May 2, 2023 | — | |
| Apr 1, 2023 | Apr 30, 2023 | MR | No | No | — | — | — | Resolved | Apr 30, 2023 | — | |
| Feb 26, 2023 | — | Other | No | No | — | — | — | Resolved | Jun 30, 2023 | — | |
| Feb 26, 2023 | — | Other | No | No | — | — | — | Resolved | Jun 30, 2023 | — | |
| Feb 26, 2023 | — | Other | No | No | — | — | — | Resolved | Jun 30, 2023 | — | |
| Feb 26, 2023 | — | Other | No | No | — | — | — | Resolved | Jun 30, 2023 | — | |
| Feb 26, 2023 | — | Other | No | No | — | — | — | Resolved | Jun 30, 2023 | — | |
| Feb 26, 2023 | — | Other | No | No | — | — | — | Resolved | Jun 30, 2023 | — | |
| Feb 1, 2023 | Feb 28, 2023 | MR | No | Yes | — | — | — | Resolved | Feb 28, 2023 | — | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2023 | — | |
| Jan 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2023 | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.