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Tap water quality report

Chuathbaluk Water

EPA monitoring tested this supplier for 48 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

48
contaminants tested
10
detected
123
people served
1
health-based violations
Alaska rankingsLead in AlaskaPFAS in Alaska
Water source
Ground water
Ownership
Native American
Counties served
Bethel Census Area

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

1
health-based violations
118
violations on file
3
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2024-01-01
MON Monitoring Resolved 2026-02-01 → 2026-02-28
MR Monitoring Unaddressed 2026-01-01
MON Monitoring Resolved 2025-11-01 → 2025-11-30
MR Monitoring Resolved 2025-11-01 → 2025-11-30
MR Monitoring Resolved 2025-04-01 → 2025-04-30
MON Monitoring Resolved 2025-04-01 → 2025-04-30
Other Monitoring Resolved 2025-02-25
MR Monitoring Resolved 2025-01-01 → 2025-01-31
MON Monitoring Resolved 2025-01-01 → 2025-01-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
436.9 µg/L 34%
of the EPA limit 1300 µg/L
worst single sample: 490 µg/L
10/10 SYR4 2013–2016
Lead
0.0102 mg/L 68%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2022
Nitrate-Nitrite
120 µg/L 1.2%
of the EPA limit 10000 µg/L
 8/16 SYR4 2012–2019
Lead
2.982 µg/L 20%
of the EPA limit 15 µg/L
worst single sample: 3.2 µg/L
5/10 SYR4 2013–2016
Chloroform
2.052 µg/L
No EPA limit set
worst single sample: 2.12 µg/L
2/3 SYR4 2012–2017
Antimony, Total
0.1290 µg/L 2.2%
of the EPA limit 6 µg/L
 1/1 SYR4 2012
Arsenic
0.7920 µg/L 7.9%
of the EPA limit 10 µg/L
 1/1 SYR4 2012
Barium
4.27 µg/L 0.2%
of the EPA limit 2000 µg/L
 1/1 SYR4 2012
Bromodichloromethane
0.6700 µg/L
No EPA limit set
 1/3 SYR4 2012–2017
Combined Radium (-226 And -228)
2.6 pCi/L 52%
of the EPA limit 5 pCi/L
 1/2 SYR4 2012–2015
38 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneBenzeneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneDibromoacetic AcidDibromochloromethaneDichloroacetic AcidEthylbenzeneFluorideMercuryMonobromoacetic AcidMonochloroacetic AcidSeleniumStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Trichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
GOLLEY, ELLEN
Email
[email protected]

Frequently asked questions about Chuathbaluk Water

Is Chuathbaluk Water tap water safe to drink?

EPA monitoring detected 10 contaminants in Chuathbaluk Water's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Chuathbaluk Water's water?

EPA monitoring detected Copper, Lead, Nitrate-Nitrite, Lead, Chloroform, and others. The full list with the level and data source for each is above.

How many people does Chuathbaluk Water serve?

Chuathbaluk Water reports serving 123 people in Alaska, per its EPA record.

Has Chuathbaluk Water had any water quality violations?

The EPA has 118 violations on file for Chuathbaluk Water, of which 1 is health-based (a contaminant limit or required treatment was breached) and 3 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.