TYONEK WATER SYSTEM
Alaska — Community Water System — PWSID: AK2240472
System Information
| PWSID | AK2240472 |
| System Name | TYONEK 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 | Feb 7, 1981 |
| Last Reported | Dec 19, 2025 |
Location & Contact
| State | Alaska |
| City | TYONEK |
| ZIP Code | 99682 |
| Address | P.O. Box 82009 |
| Organization | BARTELS, JOHANN |
| Phone | 907-583-2201 |
Population & Service
| Population Served | 206 |
| Service Connections | 97 |
Drinking Water Violations (774)
This water system has 774 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2025 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 3, 2025 | Lead and Copper Rule |
| Jan 1, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 3, 2025 | Lead and Copper Rule |
| Sep 22, 2023 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Oct 26, 2023 | Ground Water Rule |
| Jan 1, 2023 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 3, 2025 | Lead and Copper Rule |
| Jan 1, 2022 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 3, 2025 | Lead and Copper Rule |
| Jul 1, 2021 | Jul 31, 2021 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jul 31, 2021 | Revised Total Coliform Rule |
| Jul 1, 2021 | Sep 30, 2021 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2021 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jun 1, 2021 | Jun 30, 2021 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2021 | Revised Total Coliform Rule |
| May 1, 2021 | May 31, 2021 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | May 31, 2021 | Revised Total Coliform Rule |
| Feb 1, 2021 | Feb 28, 2021 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Feb 28, 2021 | Revised Total Coliform Rule |
| Jan 1, 2021 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 3, 2025 | Lead and Copper Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Aug 11, 2020 | Consumer Confidence Rule |
| May 1, 2020 | May 31, 2020 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | May 31, 2020 | Revised Total Coliform Rule |
| Jan 1, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 3, 2025 | Lead and Copper Rule |
| May 1, 2019 | May 31, 2019 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | May 31, 2019 | Revised Total Coliform Rule |
| Apr 1, 2019 | Jun 30, 2019 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2019 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2019 | Dec 31, 2019 | Arsenic | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Dec 31, 2019 | Arsenic Rule |
| Oct 1, 2018 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Feb 7, 2019 | Consumer Confidence Rule |
| Nov 1, 2017 | Nov 30, 2017 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Nov 30, 2017 | Revised Total Coliform Rule |
| Jul 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 21, 2018 | Lead and Copper Rule |
| Jul 1, 2017 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 19, 2017 | Consumer Confidence Rule |
| Jan 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 21, 2018 | Lead and Copper Rule |
| Oct 1, 2016 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 14, 2016 | Consumer Confidence Rule |
| Jul 1, 2016 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 14, 2016 | Consumer Confidence Rule |
| Apr 1, 2016 | — | Revised Total Coliform Rule | Other | No | No | — | — | — | Resolved | Nov 15, 2016 | Revised Total Coliform Rule |
| Apr 1, 2016 | — | Revised Total Coliform Rule | Other | No | No | — | — | — | Resolved | Nov 15, 2016 | Revised Total Coliform Rule |
| Jan 1, 2016 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Aug 1, 2015 | Aug 31, 2015 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | Total Coliform Rule |
| Jul 1, 2015 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Jul 1, 2015 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| May 21, 2015 | — | Other | No | No | — | — | — | Resolved | Jun 3, 2019 | Ground Water Rule | |
| Jan 1, 2015 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Jan 1, 2015 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Oct 2, 2014 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 29, 2015 | Consumer Confidence Rule |
| Oct 2, 2014 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 29, 2015 | Consumer Confidence Rule |
| Jul 1, 2014 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 29, 2015 | Consumer Confidence Rule |
| Jul 1, 2014 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Jul 1, 2014 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 29, 2015 | Consumer Confidence Rule |
| Jul 1, 2014 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 29, 2015 | Consumer Confidence Rule |
| Jul 1, 2014 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Jul 1, 2014 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Jul 1, 2014 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Jan 1, 2014 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Jan 1, 2014 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Jan 1, 2014 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Jan 1, 2014 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Jul 1, 2013 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Jul 1, 2013 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Jul 1, 2013 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
| Jul 1, 2013 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 2, 2016 | Lead and Copper Rule |
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.