Thorne Bay, AK Tap Water Quality 2026

Water quality report for Thorne Bay, AK — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Thorne Bay's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Thorne Bay, City Of PWSID: AK2120216 Updated: 2026 Q2

✅

No federal limits exceeded on record

Lead was not detected and no violations are open. PFAS has never been sampled at this system.

Thorne Bay earns a C for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: not detected

PFAS never sampled at this system

211 violations since 2015, 38 health-based

No violations currently open

Thorne Bay's lead level vs. all Alaska community water systems

0 ppb5 ppb10 ppb15 ppb

Lead level: Not detected — 0% of the federal action level

✓ Lower lead than % of Alaska utilities

Population Served

~251 connections

Water Source

Surface water

Drawn from surface water — SDWIS source code SW

Active Violations

211 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)

90th percentile of tap samples collected across the distribution system

0% of EPA action level

Not detected

Action level: 15 ppb

Copper (Cu)

90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.

111.5% of EPA action level

1,450 ppb

Action level: 1,300 ppb

Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

Contaminant	Type	Measured	Limit	Period	Status
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2026	Unaddressed
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2025	Unaddressed
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2025	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2025	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2025	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2025	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2025	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2025	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2025	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2025	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2025	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2024	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2024	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2024	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2024	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2024	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2024	Resolved
Nitrate	MONITORING AND REPORTING	—	10 mg/L	2024	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2023	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2023	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2023	Resolved
1,2,4-Trichlorobenzene	MONITORING AND REPORTING	—	0.07 mg/L	2023	Resolved
cis-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.07 mg/L	2023	Resolved
Xylenes, Total	MONITORING AND REPORTING	—	10 mg/L	2023	Resolved
DICHLOROMETHANE	MONITORING AND REPORTING	—	0.005 mg/L	2023	Resolved
o-Dichlorobenzene	MONITORING AND REPORTING	—	0.6 mg/L	2023	Resolved
p-Dichlorobenzene	MONITORING AND REPORTING	—	0.075 mg/L	2023	Resolved
Vinyl chloride	MONITORING AND REPORTING	—	0.002 mg/L	2023	Resolved
1,1-Dichloroethylene	MONITORING AND REPORTING	—	0.007 mg/L	2023	Resolved
trans-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.1 mg/L	2023	Resolved
1,2-Dichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2023	Resolved
1,1,1-Trichloroethane	MONITORING AND REPORTING	—	0.2 mg/L	2023	Resolved
Carbon tetrachloride	MONITORING AND REPORTING	—	0.005 mg/L	2023	Resolved
1,2-Dichloropropane	MONITORING AND REPORTING	—	0.005 mg/L	2023	Resolved
Trichloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2023	Resolved
1,1,2-Trichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2023	Resolved
Tetrachloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2023	Resolved
CHLOROBENZENE	MONITORING AND REPORTING	—	0.1 mg/L	2023	Resolved
Benzene	MONITORING AND REPORTING	—	0.005 mg/L	2023	Resolved
Toluene	MONITORING AND REPORTING	—	1 mg/L	2023	Resolved
Ethylbenzene	MONITORING AND REPORTING	—	0.7 mg/L	2023	Resolved
Styrene	MONITORING AND REPORTING	—	0.1 mg/L	2023	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2022	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2022	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2022	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2022	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2021	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.097 MG/L	0.060 mg/L	2021	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2020	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.143 MG/L	0.060 mg/L	2020	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.205 MG/L	0.080 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.121 MG/L	0.060 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.202 MG/L	0.080 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.237 MG/L	0.060 mg/L	2020	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2020	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2020	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2020	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2020	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2020	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2020	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2020	Resolved
1,2,4-Trichlorobenzene	MONITORING AND REPORTING	—	0.07 mg/L	2020	Resolved
cis-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.07 mg/L	2020	Resolved
Xylenes, Total	MONITORING AND REPORTING	—	10 mg/L	2020	Resolved
DICHLOROMETHANE	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
o-Dichlorobenzene	MONITORING AND REPORTING	—	0.6 mg/L	2020	Resolved
p-Dichlorobenzene	MONITORING AND REPORTING	—	0.075 mg/L	2020	Resolved
Vinyl chloride	MONITORING AND REPORTING	—	0.002 mg/L	2020	Resolved
1,1-Dichloroethylene	MONITORING AND REPORTING	—	0.007 mg/L	2020	Resolved
trans-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.1 mg/L	2020	Resolved
1,2-Dichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
1,1,1-Trichloroethane	MONITORING AND REPORTING	—	0.2 mg/L	2020	Resolved
Carbon tetrachloride	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
1,2-Dichloropropane	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
Trichloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
1,1,2-Trichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
Tetrachloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
CHLOROBENZENE	MONITORING AND REPORTING	—	0.1 mg/L	2020	Resolved
Benzene	MONITORING AND REPORTING	—	0.005 mg/L	2020	Resolved
Toluene	MONITORING AND REPORTING	—	1 mg/L	2020	Resolved
Ethylbenzene	MONITORING AND REPORTING	—	0.7 mg/L	2020	Resolved
Styrene	MONITORING AND REPORTING	—	0.1 mg/L	2020	Resolved
Nitrate	MONITORING AND REPORTING	—	10 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.179 MG/L	0.080 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.209 MG/L	0.060 mg/L	2019	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2019	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2019	Resolved
TTHM	MCL EXCEEDANCE	0.167 MG/L	0.080 mg/L	2019	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2019	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.177 MG/L	0.080 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.21 MG/L	0.060 mg/L	2019	Resolved
1,2,4-Trichlorobenzene	MONITORING AND REPORTING	—	0.07 mg/L	2019	Resolved
cis-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.07 mg/L	2019	Resolved
Xylenes, Total	MONITORING AND REPORTING	—	10 mg/L	2019	Resolved
DICHLOROMETHANE	MONITORING AND REPORTING	—	0.005 mg/L	2019	Resolved
o-Dichlorobenzene	MONITORING AND REPORTING	—	0.6 mg/L	2019	Resolved
p-Dichlorobenzene	MONITORING AND REPORTING	—	0.075 mg/L	2019	Resolved
Vinyl chloride	MONITORING AND REPORTING	—	0.002 mg/L	2019	Resolved
1,1-Dichloroethylene	MONITORING AND REPORTING	—	0.007 mg/L	2019	Resolved
trans-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.1 mg/L	2019	Resolved
1,2-Dichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2019	Resolved
1,1,1-Trichloroethane	MONITORING AND REPORTING	—	0.2 mg/L	2019	Resolved
Carbon tetrachloride	MONITORING AND REPORTING	—	0.005 mg/L	2019	Resolved
1,2-Dichloropropane	MONITORING AND REPORTING	—	0.005 mg/L	2019	Resolved
Trichloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2019	Resolved
1,1,2-Trichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2019	Resolved
Tetrachloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2019	Resolved
CHLOROBENZENE	MONITORING AND REPORTING	—	0.1 mg/L	2019	Resolved
Benzene	MONITORING AND REPORTING	—	0.005 mg/L	2019	Resolved
Toluene	MONITORING AND REPORTING	—	1 mg/L	2019	Resolved
Ethylbenzene	MONITORING AND REPORTING	—	0.7 mg/L	2019	Resolved
Styrene	MONITORING AND REPORTING	—	0.1 mg/L	2019	Resolved
TTHM	MCL EXCEEDANCE	0.195 MG/L	0.080 mg/L	2019	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.227 MG/L	0.060 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	0.211 MG/L	0.080 mg/L	2018	Resolved
Consumer Confidence Rule	OTHER	—	—	2018	Resolved
Consumer Confidence Rule	OTHER	—	—	2018	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.165 MG/L	0.060 mg/L	2018	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.208 MG/L	0.060 mg/L	2018	Resolved
TTHM	MCL EXCEEDANCE	0.212 MG/L	0.080 mg/L	2018	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2018	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2018	Resolved
E. COLI	MONITORING AND REPORTING	—	0	2018	Resolved
TTHM	MCL EXCEEDANCE	0.2 MG/L	0.080 mg/L	2018	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.175 MG/L	0.060 mg/L	2018	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2017	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2017	Resolved
Interim Enhanced Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2017	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2017	Resolved
E. COLI	MONITORING AND REPORTING	—	0	2017	Resolved
TTHM	MCL EXCEEDANCE	0.195 MG/L	0.080 mg/L	2017	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.181 MG/L	0.060 mg/L	2017	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.188 MG/L	0.060 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	0.193 MG/L	0.080 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	0.201 MG/L	0.080 mg/L	2017	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.206 MG/L	0.060 mg/L	2017	Resolved
Nitrate	MONITORING AND REPORTING	—	10 mg/L	2017	Resolved
1,2,4-Trichlorobenzene	MONITORING AND REPORTING	—	0.07 mg/L	2017	Resolved
cis-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.07 mg/L	2017	Resolved
Xylenes, Total	MONITORING AND REPORTING	—	10 mg/L	2017	Resolved
DICHLOROMETHANE	MONITORING AND REPORTING	—	0.005 mg/L	2017	Resolved
o-Dichlorobenzene	MONITORING AND REPORTING	—	0.6 mg/L	2017	Resolved
p-Dichlorobenzene	MONITORING AND REPORTING	—	0.075 mg/L	2017	Resolved
Vinyl chloride	MONITORING AND REPORTING	—	0.002 mg/L	2017	Resolved
1,1-Dichloroethylene	MONITORING AND REPORTING	—	0.007 mg/L	2017	Resolved
trans-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.1 mg/L	2017	Resolved
1,2-Dichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2017	Resolved
1,1,1-Trichloroethane	MONITORING AND REPORTING	—	0.2 mg/L	2017	Resolved
Carbon tetrachloride	MONITORING AND REPORTING	—	0.005 mg/L	2017	Resolved
1,2-Dichloropropane	MONITORING AND REPORTING	—	0.005 mg/L	2017	Resolved
Trichloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2017	Resolved
1,1,2-Trichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2017	Resolved
Tetrachloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2017	Resolved
CHLOROBENZENE	MONITORING AND REPORTING	—	0.1 mg/L	2017	Resolved
Benzene	MONITORING AND REPORTING	—	0.005 mg/L	2017	Resolved
Toluene	MONITORING AND REPORTING	—	1 mg/L	2017	Resolved
Ethylbenzene	MONITORING AND REPORTING	—	0.7 mg/L	2017	Resolved
Styrene	MONITORING AND REPORTING	—	0.1 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	0.211 MG/L	0.080 mg/L	2017	Resolved
TTHM	MCL EXCEEDANCE	0.223 MG/L	0.080 mg/L	2016	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.174 MG/L	0.060 mg/L	2016	Resolved
TTHM	MCL EXCEEDANCE	0.21 MG/L	0.080 mg/L	2016	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.217 MG/L	0.060 mg/L	2016	Resolved
Consumer Confidence Rule	OTHER	—	—	2016	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2016	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2016	Resolved
TTHM	MCL EXCEEDANCE	0.207 MG/L	0.080 mg/L	2016	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.181 MG/L	0.060 mg/L	2016	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2016	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2016	Resolved
TTHM	MCL EXCEEDANCE	0.201 MG/L	0.080 mg/L	2016	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.223 MG/L	0.060 mg/L	2016	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2015	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2015	Resolved
TTHM	MCL EXCEEDANCE	0.185 MG/L	0.080 mg/L	2015	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.223 MG/L	0.060 mg/L	2015	Resolved
TTHM	MCL EXCEEDANCE	0.171 MG/L	0.080 mg/L	2015	Resolved
Total Haloacetic Acids (HAA5)	MCL EXCEEDANCE	0.132 MG/L	0.060 mg/L	2015	Resolved
Coliform (TCR)	MONITORING AND REPORTING	—	5% of samples	2015	Resolved
Surface Water Treatment Rule	MONITORING AND REPORTING	—	—	2015	Resolved
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2015	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2015	Resolved
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2015	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2015	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2015	Resolved
1,2,4-Trichlorobenzene	MONITORING AND REPORTING	—	0.07 mg/L	2015	Resolved
cis-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.07 mg/L	2015	Resolved
Xylenes, Total	MONITORING AND REPORTING	—	10 mg/L	2015	Resolved
DICHLOROMETHANE	MONITORING AND REPORTING	—	0.005 mg/L	2015	Resolved
o-Dichlorobenzene	MONITORING AND REPORTING	—	0.6 mg/L	2015	Resolved
p-Dichlorobenzene	MONITORING AND REPORTING	—	0.075 mg/L	2015	Resolved
Vinyl chloride	MONITORING AND REPORTING	—	0.002 mg/L	2015	Resolved
1,1-Dichloroethylene	MONITORING AND REPORTING	—	0.007 mg/L	2015	Resolved
trans-1,2-Dichloroethylene	MONITORING AND REPORTING	—	0.1 mg/L	2015	Resolved
1,2-Dichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2015	Resolved
1,1,1-Trichloroethane	MONITORING AND REPORTING	—	0.2 mg/L	2015	Resolved
Carbon tetrachloride	MONITORING AND REPORTING	—	0.005 mg/L	2015	Resolved
1,2-Dichloropropane	MONITORING AND REPORTING	—	0.005 mg/L	2015	Resolved
Trichloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2015	Resolved
1,1,2-Trichloroethane	MONITORING AND REPORTING	—	0.005 mg/L	2015	Resolved
Tetrachloroethylene	MONITORING AND REPORTING	—	0.005 mg/L	2015	Resolved
CHLOROBENZENE	MONITORING AND REPORTING	—	0.1 mg/L	2015	Resolved
Benzene	MONITORING AND REPORTING	—	0.005 mg/L	2015	Resolved
Toluene	MONITORING AND REPORTING	—	1 mg/L	2015	Resolved
Ethylbenzene	MONITORING AND REPORTING	—	0.7 mg/L	2015	Resolved
Styrene	MONITORING AND REPORTING	—	0.1 mg/L	2015	Resolved

Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

211 violations are on record since 2015, of which 38 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Thorne Bay, City Of

PWSID AK2120216

Water source Surface water — Drawn from surface water — SDWIS source code SW

Population served

Service connections 251

Systems serving this area 1

Regulator State primacy agency

Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Thorne Bay tap water safe to drink? ▼

No federal limit is exceeded on record. No violations are currently open.

Does Thorne Bay water have PFAS? ▼

This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.

Who supplies water to Thorne Bay? ▼

Thorne Bay, City Of (PWSID AK2120216). Surface water. Drawn from surface water — SDWIS source code SW

When was this system last inspected? ▼

It was last inspected on 2023-09-14. No significant deficiencies were recorded.

What Should Thorne Bay Residents Do?

Read your annual water report

Your supplier publishes a Consumer Confidence Report each July covering the prior year.

Check for a lead service line

Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.

Flush before drinking

If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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