Thorne Bay Water Quality
Alaska
According to EPA SDWIS, Thorne Bay, Alaska is served by 1 community water system covering about 470 people. The same extract lists 106 health-based violation records, most recently coded 2456 in 2021. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Thorne Bay, Alaska is delivered through 1 EPA-regulated community water system serving an estimated 470 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 106 violation records across the 1 active community system shown here. Monitoring and reporting records are not present in the extract. The records carry 3 distinct EPA contaminant codes: Total Haloacetic Acids (HAA5), TTHM, Surface Water Treatment Rule.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Alaska drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| THORNE BAY, CITY OF | 470 | 106 | Health |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2021-01-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2020-10-01 |
| THORNE BAY, CITY OF | TTHM | 2020-07-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2020-07-01 |
| THORNE BAY, CITY OF | TTHM | 2020-04-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2020-04-01 |
| THORNE BAY, CITY OF | TTHM | 2019-10-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2019-10-01 |
| THORNE BAY, CITY OF | TTHM | 2019-07-01 |
| THORNE BAY, CITY OF | TTHM | 2019-04-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2019-04-01 |
| THORNE BAY, CITY OF | TTHM | 2019-01-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2018-10-01 |
| THORNE BAY, CITY OF | TTHM | 2018-10-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2018-07-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2018-04-01 |
| THORNE BAY, CITY OF | TTHM | 2018-04-01 |
| THORNE BAY, CITY OF | TTHM | 2018-01-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2018-01-01 |
| THORNE BAY, CITY OF | TTHM | 2017-10-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2017-10-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2017-07-01 |
| THORNE BAY, CITY OF | TTHM | 2017-07-01 |
| THORNE BAY, CITY OF | TTHM | 2017-04-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2017-04-01 |
| THORNE BAY, CITY OF | TTHM | 2017-01-01 |
| THORNE BAY, CITY OF | TTHM | 2016-10-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2016-10-01 |
| THORNE BAY, CITY OF | TTHM | 2016-07-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2016-07-01 |
| THORNE BAY, CITY OF | TTHM | 2016-04-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2016-04-01 |
| THORNE BAY, CITY OF | TTHM | 2016-01-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2016-01-01 |
| THORNE BAY, CITY OF | TTHM | 2015-10-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2015-10-01 |
| THORNE BAY, CITY OF | TTHM | 2015-07-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2015-07-01 |
| THORNE BAY, CITY OF | TTHM | 2013-10-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2013-10-01 |
| THORNE BAY, CITY OF | TTHM | 2013-07-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2013-07-01 |
| THORNE BAY, CITY OF | TTHM | 2013-04-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2013-04-01 |
| THORNE BAY, CITY OF | TTHM | 2013-01-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2013-01-01 |
| THORNE BAY, CITY OF | TTHM | 2012-10-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2012-10-01 |
| THORNE BAY, CITY OF | Total Haloacetic Acids (HAA5) | 2012-07-01 |
| THORNE BAY, CITY OF | TTHM | 2012-07-01 |
What are Thorne Bay's health-based records for?
Thorne Bay's health-based violation records carry 3 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Tthm | 53 | 1 |
| Total Haloacetic Acids (HAA5) | 52 | 1 |
| Surface Water Treatment Rule | 1 | 1 |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Thorne Bay, Alaska? ▼
How many water violations does Thorne Bay have in this EPA extract? ▼
What contaminants were found in Thorne Bay water? ▼
How many water systems serve Thorne Bay? ▼
Where does Thorne Bay get its drinking water? ▼
How does Thorne Bay compare in Alaska?
Of the 188 Alaska places with at least one community water system on file, Thorne Bay ranks #171 by number of systems (1).
Either side of it: Tatitlek (1), Teller (1), Togiak (1), Tok (1)
About This Data
Figures here are the current EPA SDWIS extract joined to the 1 community water system whose service area lists Thorne Bay, ranked against the 188 Alaska places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.