Public water system record

Kotlik Water System

Serves Kotlik, Kusilvak Census Area, AK · 617 people served

Federal records show 9 health-based violations and 162 monitoring/reporting issues for Kotlik Water System in the last ten years. The most serious issue in this window was a resolved Surface Water Treatment Rule violation.

  • AK2272004
  • ANCHORAGE
  • AK
  • 617 served

System profile

Source water Surface water
ZIP 99508
EPA system ID AK2272004

Verify this system on EPA ECHO →

Health-based violations, last 10 years
9
Resolved
9
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
162

Key facts

  • Kotlik Water System draws water from 1 surface water intake.
  • Most recent enforcement action: boil water order by Alaska, November 2013.
  • Record on file since 1996, with 23 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 121 service lines.

Check whether Kotlik Water System serves your address

Address suggestions by Mapbox

Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Surface Water Treatment Rule
Treatment technique failure
120 Dec 1, 2024 Resolved No
CARBON, TOTAL
Treatment technique failure
210 Oct 1, 2024 Resolved No
CARBON, TOTAL
Treatment technique failure
210 Jul 1, 2024 Resolved No
CARBON, TOTAL
Treatment technique failure
210 Apr 1, 2024 Resolved No
CARBON, TOTAL
Treatment technique failure
210 Jan 1, 2024 Resolved No
CARBON, TOTAL
Treatment technique failure
210 Oct 1, 2023 Resolved No
CARBON, TOTAL
Treatment technique failure
210 Jul 1, 2023 Resolved No
CARBON, TOTAL
Treatment technique failure
210 Apr 1, 2022 Resolved No
CARBON, TOTAL
Treatment technique failure
210 Jan 1, 2022 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Surface Water Treatment Rule
Monitoring and reporting
Nov 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Nov 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
CARBON, TOTAL
Monitoring and reporting
Nov 1, 2025 Resolved
CARBON, TOTAL
Monitoring and reporting
Nov 1, 2025 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Oct 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Oct 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Surface Water Treatment Rule
Monitoring and reporting
Sep 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Sep 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Surface Water Treatment Rule
Monitoring and reporting
Aug 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Aug 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Public Notice
OTHER
Jun 15, 2025 Resolved
Public Notice
OTHER
Jun 15, 2025 Resolved
Lead and Copper Rule
Monitoring and reporting
May 29, 2025 Active
Surface Water Treatment Rule
Monitoring and reporting
Apr 1, 2025 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Apr 1, 2025 Resolved
Lead and Copper Rule
Monitoring and reporting
Jan 1, 2025 Resolved
Chlorine
Monitoring and reporting
Dec 1, 2024 Resolved
CARBON, TOTAL
Monitoring and reporting
Dec 1, 2024 Resolved
CARBON, TOTAL
Monitoring and reporting
Dec 1, 2024 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Dec 1, 2024 Resolved
Revised Total Coliform Rule
Monitoring violation
Dec 1, 2024 Resolved
Public Notice
OTHER
Nov 6, 2024 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Oct 1, 2024 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
Oct 1, 2024 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Oct 1, 2024 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Oct 1, 2024 Resolved
CARBON, TOTAL
Monitoring and reporting
Jul 1, 2024 Resolved
CARBON, TOTAL
Monitoring and reporting
Jul 1, 2024 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Jul 1, 2024 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Jul 1, 2024 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Jul 1, 2024 Resolved
Lead and Copper Rule
Monitoring and reporting
Jul 1, 2024 Resolved
Public Notice
OTHER
Jun 30, 2024 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Jun 1, 2024 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Jun 1, 2024 Resolved
Public Notice
OTHER
Apr 16, 2024 Resolved
Chlorine
Monitoring and reporting
Apr 1, 2024 Resolved
Revised Total Coliform Rule
Monitoring violation
Apr 1, 2024 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Apr 1, 2024 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Apr 1, 2024 Resolved
Public Notice
OTHER
Jan 9, 2024 Resolved
CARBON, TOTAL
Monitoring and reporting
Jan 1, 2024 Resolved
CARBON, TOTAL
Monitoring and reporting
Jan 1, 2024 Resolved
Lead and Copper Rule
Monitoring and reporting
Jan 1, 2024 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Nov 1, 2023 Resolved
Revised Total Coliform Rule
Monitoring violation
Nov 1, 2023 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Oct 1, 2023 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
Oct 1, 2023 Resolved
CARBON, TOTAL
Monitoring and reporting
Oct 1, 2023 Resolved
CARBON, TOTAL
Monitoring and reporting
Oct 1, 2023 Resolved
CARBON, TOTAL
Monitoring and reporting
Oct 1, 2023 Resolved
CARBON, TOTAL
Monitoring and reporting
Oct 1, 2023 Resolved
Chlorine
Monitoring and reporting
Oct 1, 2023 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Jun 1, 2023 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Jun 1, 2023 Resolved
Revised Total Coliform Rule
Monitoring violation
Feb 1, 2023 Resolved
Styrene
Monitoring and reporting
Jan 1, 2023 Resolved
Ethylbenzene
Monitoring and reporting
Jan 1, 2023 Resolved
Toluene
Monitoring and reporting
Jan 1, 2023 Resolved
Benzene
Monitoring and reporting
Jan 1, 2023 Resolved
CHLOROBENZENE
Monitoring and reporting
Jan 1, 2023 Resolved
Tetrachloroethylene
Monitoring and reporting
Jan 1, 2023 Resolved
1,1,2-Trichloroethane
Monitoring and reporting
Jan 1, 2023 Resolved
Trichloroethylene
Monitoring and reporting
Jan 1, 2023 Resolved
1,2-Dichloropropane
Monitoring and reporting
Jan 1, 2023 Resolved
Carbon tetrachloride
Monitoring and reporting
Jan 1, 2023 Resolved
1,1,1-Trichloroethane
Monitoring and reporting
Jan 1, 2023 Resolved
1,2-Dichloroethane
Monitoring and reporting
Jan 1, 2023 Resolved
trans-1,2-Dichloroethylene
Monitoring and reporting
Jan 1, 2023 Resolved
1,1-Dichloroethylene
Monitoring and reporting
Jan 1, 2023 Resolved
Vinyl chloride
Monitoring and reporting
Jan 1, 2023 Resolved
p-Dichlorobenzene
Monitoring and reporting
Jan 1, 2023 Resolved
o-Dichlorobenzene
Monitoring and reporting
Jan 1, 2023 Resolved
DICHLOROMETHANE
Monitoring and reporting
Jan 1, 2023 Resolved
Xylenes, Total
Monitoring and reporting
Jan 1, 2023 Resolved
cis-1,2-Dichloroethylene
Monitoring and reporting
Jan 1, 2023 Resolved
1,2,4-Trichlorobenzene
Monitoring and reporting
Jan 1, 2023 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Oct 1, 2022 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
Oct 1, 2022 Resolved
CARBON, TOTAL
Monitoring and reporting
Jul 1, 2022 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Jul 1, 2022 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
Jul 1, 2022 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Apr 1, 2022 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
Apr 1, 2022 Resolved
CARBON, TOTAL
Monitoring and reporting
Apr 1, 2022 Resolved
Nitrate
Monitoring and reporting
Jan 1, 2022 Resolved
Lead and Copper Rule
Monitoring and reporting
Jan 1, 2022 Resolved
Consumer Confidence Rule
OTHER
Oct 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
Consumer Confidence Rule
OTHER
Jul 1, 2021 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Jul 1, 2021 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
Jul 1, 2021 Resolved
Lead and Copper Rule
Monitoring and reporting
Jul 1, 2021 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Mar 1, 2021 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Mar 1, 2021 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Jan 1, 2021 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Jan 1, 2021 Resolved
Lead and Copper Rule
Monitoring and reporting
Jan 1, 2021 Resolved
CARBON, TOTAL
Monitoring and reporting
Oct 1, 2020 Resolved
Consumer Confidence Rule
OTHER
Oct 1, 2020 Resolved
Lead and Copper Rule
Monitoring and reporting
Jul 1, 2020 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Jun 1, 2020 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Jun 1, 2020 Resolved
Revised Total Coliform Rule
Monitoring violation
Jun 1, 2020 Resolved
CARBON, TOTAL
Monitoring and reporting
Apr 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
E. coli
Monitoring and reporting
Apr 1, 2020 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Mar 1, 2020 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Mar 1, 2020 Resolved
E. coli
Monitoring and reporting
Mar 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
E. coli
Monitoring and reporting
Feb 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
CARBON, TOTAL
Monitoring and reporting
Jan 1, 2020 Resolved
E. coli
Monitoring and reporting
Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Surface Water Treatment Rule
Monitoring and reporting
Jan 1, 2020 Resolved
Lead and Copper Rule
Monitoring and reporting
Jan 1, 2020 Resolved
E. coli
Monitoring and reporting
Dec 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
E. coli
Monitoring and reporting
Nov 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Surface Water Treatment Rule
Monitoring and reporting
Nov 1, 2019 Resolved
E. coli
Monitoring and reporting
Oct 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
E. coli
Monitoring and reporting
Sep 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
E. coli
Monitoring and reporting
Aug 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
E. coli
Monitoring and reporting
Jul 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Lead and Copper Rule
Monitoring and reporting
Jul 1, 2019 Resolved
Consumer Confidence Rule
OTHER
Jul 1, 2019 Resolved
E. coli
Monitoring and reporting
Jun 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
E. coli
Monitoring and reporting
May 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
May 1, 2019 Resolved
E. coli
Monitoring and reporting
Apr 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
E. coli
Monitoring and reporting
Mar 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
E. coli
Monitoring and reporting
Feb 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
E. coli
Monitoring and reporting
Jan 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
CARBON, TOTAL
Monitoring and reporting
Jan 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
Jan 1, 2019 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Dec 1, 2018 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Dec 1, 2018 Resolved
Consumer Confidence Rule
OTHER
Oct 1, 2018 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Oct 1, 2018 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Sep 1, 2018 Resolved
CARBON, TOTAL
Monitoring and reporting
Jul 1, 2018 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Jul 1, 2018 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
Jul 1, 2018 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Jun 1, 2018 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Jun 1, 2018 Resolved
Revised Total Coliform Rule
Monitoring violation
Mar 1, 2018 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Feb 1, 2018 Resolved
Revised Total Coliform Rule
Monitoring violation
Feb 1, 2018 Resolved
Consumer Confidence Rule
OTHER
Oct 1, 2017 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Aug 1, 2017 Resolved
Revised Total Coliform Rule
Monitoring violation
Aug 1, 2017 Resolved
CARBON, TOTAL
Monitoring and reporting
Jul 1, 2017 Resolved
Chlorine
Monitoring and reporting
Jul 1, 2017 Resolved
CARBON, TOTAL
Monitoring and reporting
Apr 1, 2017 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Apr 1, 2017 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
Apr 1, 2017 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Jan 1, 2017 Resolved
Chlorine
Monitoring and reporting
Jan 1, 2017 Resolved
Revised Total Coliform Rule
Monitoring violation
Jan 1, 2017 Resolved
Surface Water Treatment Rule
Monitoring and reporting
Dec 1, 2016 Resolved
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
Dec 1, 2016 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

Full record since 1996

EPA's records for Kotlik Water System go back to 1996. Before October 19, 2016 they list 23 health-based violations (12 resolved, 11 archived by EPA without a recorded fix) and 661 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 1
2000s 13 413
2010 to October 18, 2016 10 247
October 19, 2016 to 2019 0 44
2020s 9 115

Most recent health-based violation before October 19, 2016: Haloacetic Acids (HAA5), began April 2016, Resolved.

Show all 23 health-based violations before October 19, 2016
Contaminant Start date Status
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.072 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
Apr 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.088 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
Jan 1, 2016 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.069 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
Jul 1, 2015 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.067 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
Oct 1, 2014 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
Oct 1, 2014 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.103 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
Jul 1, 2014 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.101 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
Apr 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.091 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
Jan 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 111 µg/L, federal limit 80 µg/L (1.4 times the limit)
Oct 1, 2011 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 104 µg/L, federal limit 80 µg/L (1.3 times the limit)
Apr 1, 2011 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.182 mg/L, federal limit 0.08 mg/L (2.3 times the limit)
Jul 1, 2009 Resolved
Surface Water Treatment Rule
Treatment technique failure
Oct 1, 2007 Archived
Surface Water Treatment Rule
Treatment technique failure
Sep 1, 2007 Archived
Surface Water Treatment Rule
Treatment technique failure
Mar 1, 2007 Archived
CARBON, TOTAL
Treatment technique failure
Jan 1, 2007 Resolved
Surface Water Treatment Rule
Treatment technique failure
Mar 1, 2006 Archived
Surface Water Treatment Rule
Treatment technique failure
Sep 1, 2005 Archived
CARBON, TOTAL
Treatment technique failure
Oct 1, 2004 Archived
CARBON, TOTAL
Treatment technique failure
Jul 1, 2004 Archived
CARBON, TOTAL
Treatment technique failure
Jul 1, 2004 Archived
Surface Water Treatment Rule
Treatment technique failure
Mar 1, 2002 Archived
Surface Water Treatment Rule
Treatment technique failure
Sep 1, 2001 Archived
Surface Water Treatment Rule
Treatment technique failure
Feb 1, 2001 Archived

Enforcement actions

Alaska regulators took 1 formal enforcement action against Kotlik Water System and issued 2 boil water orders between 2005 and 2013. The most recent was a boil water order in November 2013.

Date By Action Violations covered
Nov 13, 2013 Alaska Boil water order 1 violation
May 28, 2009 Alaska Boil water order 1 violation
May 3, 2005 Alaska Compliance order (no penalty) 4 violations: Lead and Copper Rule

What the violations mean

CARBON, TOTAL

8 incidents

The system did not complete a treatment step or action that federal rules require for CARBON, TOTAL (a treatment technique violation).

The utility had to notify customers about each of these violations.

Surface Water Treatment Rule

1 incident

The 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 this violation.

Where the water comes from

Kotlik Water System draws water from 1 surface water intake.

Annual water quality report

Kotlik 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.

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.