Is Holmes Harbor Water Co Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Private
Counties served: Island

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	2000-10-01 → 2000-10-31
MCL	Health-based	Archived	2000-10-01 → 2000-10-31
MCL	Health-based	Archived	2000-10-01 → 2000-10-31
MCL	Health-based	Archived	1997-11-01 → 1997-11-30
MCL	Health-based	Archived	1997-11-01 → 1997-11-30
MCL	Health-based	Archived	1997-11-01 → 1997-11-30
MCL	Health-based	Archived	1997-10-01 → 1997-10-31
MCL	Health-based	Archived	1997-10-01 → 1997-10-31
MCL	Health-based	Archived	1997-10-01 → 1997-10-31
MCL	Health-based	Archived	1995-10-01 → 1995-10-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate	760 µg/L 7.6% of the EPA limit 10000 µg/L	10/12	SYR4	2014–2019
Lead	0.0021 mg/L 14% of the EPA limit 0.0150 mg/L	9/9	LCR	2023
Bromodichloromethane	3.14 µg/L No EPA limit set worst single sample: 3.6 µg/L	5/5	SYR4	2012–2018
Bromoform	11.5 µg/L No EPA limit set worst single sample: 11.9 µg/L	5/5	SYR4	2012–2018
Dibromochloromethane	8.92 µg/L No EPA limit set worst single sample: 10 µg/L	5/5	SYR4	2012–2018
TTHM	24.16 µg/L 30% of the EPA limit 80 µg/L worst single sample: 26.7 µg/L	5/5	SYR4	2012–2018
Dibromoacetic Acid	2.11 µg/L No EPA limit set worst single sample: 2.2 µg/L	3/3	SYR4	2013–2017
Total Haloacetic Acids (HAA5)	4.72 µg/L 7.9% of the EPA limit 60 µg/L worst single sample: 5 µg/L	3/3	SYR4	2013–2017
Arsenic	7.8 µg/L 78% of the EPA limit 10 µg/L	1/1	SYR4	2016
Copper	72 µg/L 5.5% of the EPA limit 1300 µg/L	1/1	SYR4	2016
Chloroform	1.2 µg/L No EPA limit set	1/5	SYR4	2012–2018
Fluoride	410 µg/L 10% of the EPA limit 4000 µg/L	1/1	SYR4	2016
Nitrate-Nitrite	720 µg/L 7.2% of the EPA limit 10000 µg/L	1/1	SYR4	2016
Trichloroacetic Acid	4 µg/L No EPA limit set	1/3	SYR4	2013–2017

43 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalBariumBenzeneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDichloroacetic AcidDinosebEthylene DibromideEthylbenzeneLeadMercuryMonobromoacetic AcidMonochloroacetic AcidNitritePentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: Joanne Skaar

Frequently asked questions about Holmes Harbor Water Co

Is Holmes Harbor Water Co tap water safe to drink?

EPA monitoring detected 14 contaminants in Holmes Harbor Water Co'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 Holmes Harbor Water Co's water?

EPA monitoring detected Nitrate, Lead, Bromodichloromethane, Bromoform, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Holmes Harbor Water Co serve?

Holmes Harbor Water Co reports serving 110 people in Washington, per its EPA record.

Has Holmes Harbor Water Co had any water quality violations?

The EPA has 56 violations on file for Holmes Harbor Water Co, of which 10 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.