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Tap water quality report

Dillingham Water

EPA monitoring tested this supplier for 50 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

50
contaminants tested
12
detected
2,419
people served
6
health-based violations
Alaska rankingsLead in AlaskaPFAS in Alaska
Water source
Ground water
Ownership
Native American
Counties served
Dillingham 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.

6
health-based violations
436
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-08-03
TT Health-based Resolved 2024-08-03
TT Health-based Resolved 2020-01-10
TT Health-based Resolved 2020-01-10
TT Health-based Resolved 2020-01-10
TT Health-based Resolved 2020-01-10
Other Monitoring Resolved 2025-10-01
MR Monitoring Archived 2025-07-01 → 2025-09-30
Other Monitoring Resolved 2025-05-30
MR Monitoring Resolved 2025-04-01 → 2025-06-30

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
486.9 µg/L 37%
of the EPA limit 1300 µg/L
worst single sample: 700 µg/L
40/40 SYR4 2013–2018
Lead
7.58 µg/L 51%
of the EPA limit 15 µg/L
worst single sample: 9.3 µg/L
23/40 SYR4 2013–2018
Lead
0.00040 mg/L 2.7%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2027
Dichloroacetic Acid
3.685 µg/L
No EPA limit set
worst single sample: 4 µg/L
8/8 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
3.685 µg/L 6.1%
of the EPA limit 60 µg/L
worst single sample: 4 µg/L
8/8 SYR4 2012–2019
Chloroform
2.9 µg/L
No EPA limit set
 7/8 SYR4 2012–2019
TTHM
2.9 µg/L 3.6%
of the EPA limit 80 µg/L
 5/8 SYR4 2012–2019
Xylenes, Total
8.274 µg/L 0.1%
of the EPA limit 10000 µg/L
worst single sample: 9.54 µg/L
4/5 SYR4 2013–2019
Arsenic
1.1 µg/L 11%
of the EPA limit 10 µg/L
 1/1 SYR4 2013
Barium
16.8 µg/L 0.8%
of the EPA limit 2000 µg/L
 1/1 SYR4 2019
Ethylbenzene
1.48 µg/L 0.2%
of the EPA limit 700 µg/L
 1/5 SYR4 2013–2019
Gross Beta Particle Activity
4.9 pCi/L
No EPA limit set
 1/1 SYR4 2015
38 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalAsbestosBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumCombined Radium (-226 And -228)DichloromethaneDibromoacetic AcidDibromochloromethaneFluorideMercuryMonobromoacetic AcidMonochloroacetic AcidNitrate-NitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
FLYNN, ABIGAIL
Phone
907-842-5212
Email
[email protected]

Frequently asked questions about Dillingham Water

Is Dillingham Water tap water safe to drink?

EPA monitoring detected 12 contaminants in Dillingham 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 Dillingham Water's water?

EPA monitoring detected Copper, Lead, Lead, Dichloroacetic Acid, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Dillingham Water serve?

Dillingham Water reports serving 2,419 people in Alaska, per its EPA record.

Has Dillingham Water had any water quality violations?

The EPA has 436 violations on file for Dillingham Water, of which 6 are health-based (a contaminant limit or required treatment was breached) and 0 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.