Is Seven Lakes Water Association Tap Water Safe? Quality Report

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

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	1998-05-01 → 1998-05-31
MCL	Health-based	Archived	1998-05-01 → 1998-05-31
MCL	Health-based	Archived	1998-05-01 → 1998-05-31
Other	Monitoring	Resolved	2022-07-01
MR	Monitoring	Resolved	2022-01-01 → 2022-12-31
MR	Monitoring	Resolved	2022-01-01 → 2022-12-31
MR	Monitoring	Resolved	2022-01-01 → 2022-12-31
MR	Monitoring	Resolved	2022-01-01 → 2022-12-31
MR	Monitoring	Resolved	2020-01-01 → 2020-12-31
MR	Monitoring	Resolved	2020-01-01 → 2020-12-31

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	4280 µg/L 43% of the EPA limit 10000 µg/L worst single sample: 4400 µg/L	62/62	SYR4	2012–2019
Arsenic	8 µg/L 80% of the EPA limit 10 µg/L worst single sample: 9 µg/L	27/27	SYR4	2012–2019
Barium	7.4 µg/L 0.4% of the EPA limit 2000 µg/L worst single sample: 8 µg/L	27/27	SYR4	2012–2019
Chromium	9 µg/L 9% of the EPA limit 100 µg/L	27/27	SYR4	2012–2019
Nitrate-Nitrite	4280 µg/L 43% of the EPA limit 10000 µg/L worst single sample: 4400 µg/L	27/27	SYR4	2012–2019
Lead	0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L	11/11	LCR	2023
Bromodichloromethane	0.6000 µg/L No EPA limit set	2/6	SYR4	2015–2019
Bromoform	1.785 µg/L No EPA limit set worst single sample: 1.8 µg/L	2/6	SYR4	2015–2019
Dibromochloromethane	1.395 µg/L No EPA limit set worst single sample: 1.4 µg/L	2/6	SYR4	2015–2019
TTHM	3.69 µg/L 4.6% of the EPA limit 80 µg/L worst single sample: 3.7 µg/L	2/2	SYR4	2019
Copper	5 µg/L 0.4% of the EPA limit 1300 µg/L	1/27	SYR4	2012–2019
Lead	1 µg/L 6.7% of the EPA limit 15 µg/L	1/27	SYR4	2012–2019

73 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalBenzeneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChloroformDichloromethaneDalaponDibromoacetic AcidDichloroacetic AcidDinosebEthylbenzeneFluorideGross Beta Particle ActivityHfpo-DaMercuryMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: Kevin Wynn

Frequently asked questions about Seven Lakes Water Association

Is Seven Lakes Water Association tap water safe to drink?

EPA monitoring detected 12 contaminants in Seven Lakes Water Association'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 Seven Lakes Water Association's water?

EPA monitoring detected Nitrate, Arsenic, Barium, Chromium, Nitrate-Nitrite, and others. The full list with the level and data source for each is above.

How many people does Seven Lakes Water Association serve?

Seven Lakes Water Association reports serving 5,823 people in Washington, per its EPA record.

Has Seven Lakes Water Association had any water quality violations?

The EPA has 57 violations on file for Seven Lakes Water Association, of which 3 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.