Is Black Diamond Water District Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: Clallam

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
TT	Health-based	Archived	2007-03-01 → 2007-03-31
TT	Health-based	Archived	2007-03-01 → 2007-03-31
TT	Health-based	Archived	2007-01-01 → 2007-01-31
TT	Health-based	Archived	2003-11-01 → 2003-11-30
TT	Health-based	Archived	2003-09-01 → 2003-09-30
TT	Health-based	Archived	2002-06-01 → 2002-06-30
TT	Health-based	Archived	1999-07-01 → 1999-08-01
TT	Health-based	Archived	1999-06-01 → 1999-06-30
TT	Health-based	Archived	1999-05-01 → 1999-05-31
TT	Health-based	Archived	1994-05-01 → 1994-05-31

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
Lead	0.0055 mg/L 37% of the EPA limit 0.0150 mg/L	13/13	LCR	2023
Bromodichloromethane	2.1715 µg/L No EPA limit set worst single sample: 2.21 µg/L	8/8	SYR4	2012–2019
Chloroform	25.195 µg/L No EPA limit set worst single sample: 26 µg/L	8/8	SYR4	2012–2019
TTHM	27.19 µg/L 34% of the EPA limit 80 µg/L worst single sample: 28.1 µg/L	8/8	SYR4	2012–2019
Dichloroacetic Acid	13.98 µg/L No EPA limit set worst single sample: 15.9 µg/L	7/7	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	30.88 µg/L 51% of the EPA limit 60 µg/L worst single sample: 35.2 µg/L	7/7	SYR4	2012–2019
Trichloroacetic Acid	16.99 µg/L No EPA limit set worst single sample: 19.3 µg/L	7/7	SYR4	2012–2019

34 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAsbestosBenzeneBromoformChlorobenzeneCarbon TetrachlorideDichloromethaneDalaponDibromoacetic AcidDibromochloromethaneDinosebEthylbenzeneMonobromoacetic AcidMonochloroacetic AcidNitratePentachlorophenolPicloramStyreneTetrachloroethyleneTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: JASON BAAR

Frequently asked questions about Black Diamond Water District

Is Black Diamond Water District tap water safe to drink?

EPA monitoring detected 7 contaminants in Black Diamond Water District'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 Black Diamond Water District's water?

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

How many people does Black Diamond Water District serve?

Black Diamond Water District reports serving 452 people in Washington, per its EPA record.

Has Black Diamond Water District had any water quality violations?

The EPA has 96 violations on file for Black Diamond Water District, 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.