Public water system record
Tyonek Water System
Serves Tyonek, Kenai Peninsula Borough, AK · 206 people served
Federal records show no health-based violations and 26 monitoring/reporting issues for Tyonek Water System in the last ten years.
System profile
Source water
Groundwater
ZIP
99682
EPA system ID
AK2240472
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 26
Key facts
- Tyonek Water System draws water from 2 wells.
- Most recent enforcement action: boil water order by Alaska, April 2021.
- Record on file since 1979, with 60 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 104 service lines.
Check whether Tyonek Water System 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.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2025 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
E. coli
Monitoring and reporting
|
Sep 22, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2016 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2016 | Resolved |
|
Revised Total Coliform Rule
OTHER
|
Apr 1, 2016 | Resolved |
|
Ground Water Rule
OTHER
|
May 21, 2015 | Resolved |
Full record since 1979
EPA's records for Tyonek Water System go back to 1979. Before October 19, 2016 they list 60 health-based violations (18 resolved, 42 archived by EPA without a recorded fix) and 368 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 8 |
| 1980s | 0 | 23 |
| 1990s | 29 | 193 |
| 2000s | 31 | 126 |
| 2010 to October 18, 2016 | 0 | 18 |
| October 19, 2016 to 2019 | 0 | 8 |
| 2020s | 0 | 14 |
Most recent health-based violation before October 19, 2016: Arsenic, began April 2007, Resolved.
Show all 60 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Apr 1, 2007 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 2005 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Nov 1, 2005 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Nov 1, 2005 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2005 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Aug 1, 2005 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2005 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jul 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2005 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2005 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jun 1, 2005 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jun 1, 2005 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jun 1, 2005 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 2005 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Apr 1, 2005 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 2005 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 2005 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2005 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2005 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2005 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2004 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 2004 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2004 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 2003 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 2003 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 2003 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2003 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2003 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 2003 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2003 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 2000 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1998 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Aug 1, 1998 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1997 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 1996 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1995 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1995 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 1995 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1995 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 1995 | Archived |
10 older violations are not listed here. EPA ECHO has the complete list.
Enforcement actions
Alaska regulators and EPA took 1 formal enforcement action against Tyonek Water System and issued 11 boil water orders between 1986 and 2021. The most recent was a boil water order in April 2021.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 9, 2021 | Alaska | Boil water order | 1 violation |
| Oct 5, 2020 | Alaska | Boil water order | 1 violation |
| Jun 26, 2018 | Alaska | Boil water order | 1 violation |
| May 10, 2017 | Alaska | Boil water order | 1 violation |
| Jul 20, 2016 | Alaska | Boil water order | 1 violation |
| Mar 14, 2016 | Alaska | Boil water order | 1 violation |
| Feb 23, 2006 | Alaska | Boil water order | 1 violation |
| Jun 15, 2005 | Alaska | Boil water order | 1 violation |
| Aug 5, 2003 | Alaska | Boil water order | 1 violation |
| Aug 26, 1998 | Alaska | Boil water order | 1 violation |
| Jan 23, 1992 | EPA | Compliance order (no penalty) | 31 violations: Barium, Chromium (total), Arsenic, Cadmium, Nitrate |
| Sep 30, 1986 | Alaska | Boil water order | 1 violation |
Where the water comes from
Tyonek Water System draws water from 2 wells.
Annual water quality report
Tyonek Water System 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.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Tyonek Water System for a copy.
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