Public water system record
Kasaan
On record as serving Ketchikan, Ketchikan Gateway Borough, AK · Serves 66 people
Federal records show 12 health-based violations and 59 monitoring/reporting issues for Kasaan in the last ten years. The most serious issue in this window was a resolved Haloacetic Acids (HAA5) violation.
System profile
Source water
Surface water
ZIP
99950
EPA system ID
AK2120606
- Health-based violations, last 10 years
- 12
- Resolved
- 12
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 59
Key facts
- Kasaan draws water from 1 surface water intake.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.129 mg/L, federal limit 0.08 mg/L (1.6 times the limit), 2018.
- Most recent enforcement action: boil water order by Alaska, May 2007.
- Record on file since 1987, with 68 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 36 service lines.
Check whether Kasaan 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 |
|---|---|---|---|---|
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.074 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
220 | Oct 1, 2019 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
220 | Jan 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.129 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
|
220 | Jan 1, 2018 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.071 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
220 | Jul 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2017 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.063 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Apr 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2017 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.068 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Jan 1, 2017 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Oct 1, 2016 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Oct 1, 2016 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
220 | Oct 1, 2016 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Chlorine
Monitoring and reporting
|
Nov 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2024 | 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 |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2022 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jun 1, 2021 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jun 1, 2021 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Feb 1, 2021 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Feb 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2020 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Feb 29, 2020 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Feb 29, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2019 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2019 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Dec 1, 2018 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2018 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2018 | Resolved |
|
E. coli
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
E. coli
Monitoring and reporting
|
Dec 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
May 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
May 1, 2017 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Mar 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 |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Feb 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Feb 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
|
Jan 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2016 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jun 30, 2016 | Resolved |
|
Revised Total Coliform Rule
OTHER
|
Apr 1, 2016 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2011 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2008 | Resolved |
Full record since 1987
EPA's records for Kasaan go back to 1987. Before October 19, 2016 they list 68 health-based violations (49 resolved, 19 archived by EPA without a recorded fix) and 260 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 14 |
| 1990s | 7 | 28 |
| 2000s | 45 | 80 |
| 2010 to October 18, 2016 | 16 | 138 |
| October 19, 2016 to 2019 | 9 | 29 |
| 2020s | 0 | 23 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began October 2016, Resolved.
Show all 68 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Oct 1, 2016 | 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, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2016 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.07 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
Jul 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 2016 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.07 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
Apr 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 2016 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2015 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 2015 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.061 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
Apr 1, 2015 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Apr 1, 2015 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.079 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
|
Jan 1, 2012 | 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, 2011 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Jul 1, 2011 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.063 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
Jan 1, 2010 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.099 mg/L, federal limit 0.06 mg/L (1.7 times the limit)
|
Oct 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jul 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.118 mg/L, federal limit 0.06 mg/L (2 times the limit)
|
Jul 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Apr 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.118 mg/L, federal limit 0.06 mg/L (2 times the limit)
|
Apr 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.268 mg/L, federal limit 0.06 mg/L (4.5 times the limit)
|
Jan 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.133 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
|
Jan 1, 2008 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2008 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 2007 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.306 mg/L, federal limit 0.06 mg/L (5.1 times the limit)
|
Oct 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.165 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
|
Oct 1, 2007 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 2007 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2007 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2007 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.322 mg/L, federal limit 0.06 mg/L (5.4 times the limit)
|
Jul 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.262 mg/L, federal limit 0.08 mg/L (3.3 times the limit)
|
Jul 1, 2007 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2007 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.24 mg/L, federal limit 0.06 mg/L (4 times the limit)
|
Apr 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.271 mg/L, federal limit 0.08 mg/L (3.4 times the limit)
|
Apr 1, 2007 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.271 mg/L, federal limit 0.08 mg/L (3.4 times the limit)
|
Jan 1, 2007 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.24 mg/L, federal limit 0.06 mg/L (4 times the limit)
|
Jan 1, 2007 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2007 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2007 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 2006 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.2395 mg/L, federal limit 0.06 mg/L (4 times the limit)
|
Oct 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.271 mg/L, federal limit 0.08 mg/L (3.4 times the limit)
|
Oct 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.237 mg/L, federal limit 0.08 mg/L (3 times the limit)
|
Jul 1, 2006 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.221 mg/L, federal limit 0.06 mg/L (3.7 times the limit)
|
Jul 1, 2006 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.265 mg/L, federal limit 0.06 mg/L (4.4 times the limit)
|
Jul 1, 2005 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2005 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.293 mg/L, federal limit 0.08 mg/L (3.7 times the limit)
|
Jan 1, 2005 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2005 | Resolved |
18 older violations are not listed here. EPA ECHO has the complete list.
Enforcement actions
Alaska regulators took 1 formal enforcement action against Kasaan and issued 6 boil water orders between 1992 and 2007. The most recent was a boil water order in May 2007.
| Date | By | Action | Violations covered |
|---|---|---|---|
| May 31, 2007 | Alaska | Boil water order | 1 violation (1 health-based): Surface Water Treatment Rule |
| Mar 7, 2007 | Alaska | Compliance order (no penalty) | 13 violations (3 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs), Chlorine, Surface Water Treatment Rule |
| Dec 7, 2006 | Alaska | Boil water order | 1 violation (1 health-based): Surface Water Treatment Rule |
| Sep 23, 2005 | Alaska | Boil water order | 1 violation |
| Dec 28, 2003 | Alaska | Boil water order | 1 violation |
| Nov 24, 1998 | Alaska | Boil water order | 1 violation |
| Oct 15, 1992 | Alaska | Boil water order | 1 violation |
What the violations mean
Haloacetic Acids (HAA5)
6 incidentsHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
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.
Total Trihalomethanes (TTHMs)
2 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
Kasaan draws water from 1 surface water intake.
Annual water quality report
Kasaan 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 Kasaan 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