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Tap water quality report

Sitka

EPA monitoring tested this supplier for 81 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

81
contaminants tested
15
detected
9,448
people served
14
health-based violations
Alaska rankingsLead in AlaskaPFAS in Alaska
Water source
Surface water
Ownership
Native American
Counties served
Sitka City and Borough

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.

14
health-based violations
71
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2018-11-01 → 2018-11-30
TT Health-based Resolved 2017-10-01 → 2017-10-31
TT Health-based Resolved 2016-09-01 → 2016-09-30
TT Health-based Resolved 2015-09-01 → 2015-09-30
TT Health-based Resolved 2003-11-01 → 2003-11-30
TT Health-based Archived 1997-10-01 → 1997-10-31
TT Health-based Archived 1997-08-01 → 1997-08-31
TT Health-based Archived 1997-07-01 → 1997-07-31
TT Health-based Archived 1997-04-01 → 1997-04-30
TT Health-based Archived 1997-03-01 → 1997-03-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
1050 µg/L 81%
of the EPA limit 1300 µg/L
 101/101 SYR4 2012–2017
Lead
65.7 µg/L 438%
of the EPA limit, in the worst sample — 15 µg/L
 89/101 SYR4 2012–2017
Bromodichloromethane
3.85 µg/L
No EPA limit set
 77/77 SYR4 2012–2019
Chloroform
36.4 µg/L
No EPA limit set
 77/77 SYR4 2012–2019
TTHM
39.4 µg/L 49%
of the EPA limit 80 µg/L
 77/77 SYR4 2012–2019
Dichloroacetic Acid
15 µg/L
No EPA limit set
 73/73 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
38 µg/L 63%
of the EPA limit 60 µg/L
 73/73 SYR4 2012–2019
Trichloroacetic Acid
24 µg/L
No EPA limit set
 73/73 SYR4 2012–2019
Lead
0.0083 mg/L 55%
of the EPA limit 0.0150 mg/L
 23/23 LCR 2026
Nitrate-Nitrite
380 µg/L 3.8%
of the EPA limit 10000 µg/L
 12/13 SYR4 2012–2019
Nitrate
185 µg/L 1.9%
of the EPA limit 10000 µg/L
 2/2 SYR4 2014
Barium
9.65 µg/L 0.5%
of the EPA limit 2000 µg/L
 1/2 SYR4 2014–2019
Combined Radium (-226 And -228)
0.3500 pCi/L 7%
of the EPA limit 5 pCi/L
 1/1 SYR4 2016
Dibromoacetic Acid
1.7 µg/L
No EPA limit set
 1/73 SYR4 2012–2019
Fluoride
459 µg/L 11%
of the EPA limit 4000 µg/L
 1/2 SYR4 2014–2019
66 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosBenzeneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneDibromochloromethaneEthylbenzeneHfpo-DaMercuryMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
SWAIN, JOE
Phone
907-747-4074
Email
joe.swain@cityofsitka.org

Frequently asked questions about Sitka

Is Sitka tap water safe to drink?

EPA monitoring detected 15 contaminants in Sitka'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 Sitka's water?

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

How many people does Sitka serve?

Sitka reports serving 9,448 people in Alaska, per its EPA record.

Has Sitka had any water quality violations?

The EPA has 71 violations on file for Sitka, of which 14 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.