Public water system record
Unalakleet City Water Supply
Serves Unalakleet, Nome Census Area, AK · 757 people served
Federal records show 50 health-based violations and 130 monitoring/reporting issues for Unalakleet City Water Supply in the last ten years. The most serious issue in this window was a resolved Interim Enhanced Surface Water Treatment Rule violation.
System profile
Source water
Groundwater
ZIP
99684
EPA system ID
AK2340387
- Health-based violations, last 10 years
- 50
- Resolved
- 50
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 130
Key facts
- Unalakleet City Water Supply draws water from 5 wells.
- Most recent enforcement action: boil water order by Alaska, November 2025.
- Record on file since 1985, with 112 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 252 service lines.
Check whether Unalakleet City Water Supply serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2024 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2024 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Feb 1, 2024 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2024 | Resolved | Yes |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2023 | Resolved | No |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 1, 2022 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 1, 2022 | Resolved | Yes |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 1, 2022 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Aug 1, 2022 | Resolved | No |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Aug 1, 2022 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Aug 1, 2022 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2022 | Resolved | Yes |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2022 | Resolved | No |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2022 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2022 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2022 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Feb 1, 2022 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2022 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2022 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Dec 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Nov 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Oct 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Aug 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Aug 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jul 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jul 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Feb 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Feb 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2021 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Dec 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Nov 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Oct 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jul 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jul 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Mar 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2020 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2019 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Mar 1, 2018 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2018 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Sep 1, 2017 | Resolved | Yes |
|
Revised Total Coliform Rule
Treatment technique failure
|
110 | Jun 2, 2017 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2025 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jun 1, 2025 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Mar 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2023 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jun 1, 2023 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
May 1, 2023 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
May 1, 2023 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
May 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Feb 1, 2023 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Feb 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Dec 1, 2022 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Dec 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2022 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2022 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2022 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2022 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2022 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2022 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2022 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2022 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jun 1, 2022 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jun 1, 2022 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jun 1, 2022 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jun 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2022 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
May 1, 2022 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
May 1, 2022 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2022 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Apr 1, 2022 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Mar 1, 2022 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Mar 1, 2022 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Dec 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Sep 1, 2021 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Sep 1, 2021 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2021 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2021 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jun 1, 2021 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
May 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2021 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2020 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Sep 1, 2020 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Sep 1, 2020 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2020 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2020 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Feb 1, 2020 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Feb 1, 2020 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Dec 1, 2019 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2018 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2018 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2018 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jun 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2018 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
May 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Mar 1, 2018 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Mar 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Mar 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Mar 1, 2017 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Dec 1, 2016 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2016 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2016 | Resolved |
|
Ground Water Rule
OTHER
|
Jul 31, 2012 | Resolved |
Full record since 1985
EPA's records for Unalakleet City Water Supply go back to 1985. Before October 19, 2016 they list 112 health-based violations (53 resolved, 59 archived by EPA without a recorded fix) and 330 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 18 |
| 1990s | 50 | 156 |
| 2000s | 40 | 102 |
| 2010 to October 18, 2016 | 22 | 54 |
| October 19, 2016 to 2019 | 5 | 36 |
| 2020s | 45 | 91 |
Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began January 2016, Resolved.
Show all 112 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jan 1, 2016 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Aug 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Aug 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Apr 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Aug 1, 2014 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jul 1, 2014 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jul 1, 2014 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Apr 1, 2012 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Sep 1, 2011 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Aug 1, 2011 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.073 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
Jul 1, 2011 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jul 1, 2011 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.06 mg/L (1.4 times the limit)
|
Apr 1, 2011 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Apr 1, 2011 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.071 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
Jan 1, 2011 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.073 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
Oct 1, 2010 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Sep 1, 2010 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Aug 1, 2010 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.062 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
Jul 1, 2010 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
May 1, 2010 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.06 mg/L (1.4 times the limit)
|
Apr 1, 2010 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Jan 1, 2010 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Dec 1, 2009 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Nov 1, 2009 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.06 mg/L (1.7 times the limit)
|
Oct 1, 2009 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.06 mg/L (1.8 times the limit)
|
Jul 1, 2009 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2009 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Feb 1, 2009 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.103 mg/L, federal limit 0.06 mg/L (1.7 times the limit)
|
Oct 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.111 mg/L, federal limit 0.06 mg/L (1.9 times the limit)
|
Jul 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jul 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.107 mg/L, federal limit 0.06 mg/L (1.8 times the limit)
|
Apr 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.095 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
Apr 1, 2008 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Mar 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.06 mg/L (1.4 times the limit)
|
Jan 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jan 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.08 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
|
Oct 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Oct 1, 2007 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.076 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
|
Jul 1, 2007 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.096 mg/L, federal limit 0.06 mg/L (1.6 times the limit)
|
Jan 1, 2007 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.121 mg/L, federal limit 0.06 mg/L (2 times the limit)
|
Oct 1, 2006 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Jul 1, 2006 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Apr 1, 2006 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Jul 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Apr 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Jan 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Oct 1, 2004 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 2004 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2004 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 2004 | Resolved |
62 older violations are not listed here. EPA ECHO has the complete list.
Enforcement actions
Alaska regulators issued 23 boil water orders to Unalakleet City Water Supply between 1997 and 2025. The most recent was a boil water order in November 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 9, 2025 | Alaska | Boil water order | 1 violation |
| Sep 11, 2025 | Alaska | Boil water order | 1 violation |
| Aug 26, 2025 | Alaska | Boil water order | 1 violation |
| Apr 10, 2024 | Alaska | Boil water order | 1 violation |
| Aug 23, 2022 | Alaska | Boil water order | 1 violation (1 health-based): Surface Water Treatment Rule |
| Nov 4, 2021 | Alaska | Boil water order | 1 violation |
| Oct 7, 2021 | Alaska | Boil water order | 1 violation |
| Jul 26, 2021 | Alaska | Boil water order | 1 violation |
| Dec 11, 2020 | Alaska | Boil water order | 1 violation |
| Aug 31, 2020 | Alaska | Boil water order | 1 violation |
| Jul 4, 2020 | Alaska | Boil water order | 1 violation |
| Jun 1, 2020 | Alaska | Boil water order | 1 violation |
| Dec 31, 2019 | Alaska | Boil water order | 1 violation |
| Nov 28, 2018 | Alaska | Boil water order | 1 violation |
| Aug 20, 2018 | Alaska | Boil water order | 1 violation |
| Jan 19, 2018 | Alaska | Boil water order | 1 violation |
| Mar 9, 2017 | Alaska | Boil water order | 1 violation |
| Aug 16, 2016 | Alaska | Boil water order | 1 violation |
| Aug 5, 2016 | Alaska | Boil water order | 1 violation |
| Sep 17, 2015 | Alaska | Boil water order | 1 violation |
| Mar 24, 2013 | Alaska | Boil water order | 1 violation |
| Aug 31, 2011 | Alaska | Boil water order | 1 violation |
| Mar 7, 1997 | Alaska | Boil water order | 1 violation |
What the violations mean
Interim Enhanced Surface Water Treatment Rule
45 incidentsThe system did not meet a filtration or treatment requirement for surface water
Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through
Surface Water Treatment Rule
4 incidentsThe system did not complete a treatment step or action that the Surface Water Treatment Rule requires (a treatment technique violation).
The utility had to notify customers about each of these violations.
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
Unalakleet City Water Supply draws water from 5 wells.
Annual water quality report
Unalakleet City Water Supply must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Alaska.
Certified drinking water labs by state EPA guidance for private wells