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Tap water quality report

Y-Squalicum Water Assn

EPA monitoring tested this supplier for 64 contaminants and detected 4. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

64
contaminants tested
4
detected
260
people served
17
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Whatcom

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.

17
health-based violations
145
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2000-05-01 → 2000-05-31
MCL Health-based Archived 2000-05-01 → 2000-05-31
MCL Health-based Archived 2000-05-01 → 2000-05-31
MCL Health-based Archived 1996-05-01 → 1996-05-31
MCL Health-based Archived 1992-10-01 → 1992-10-31
MCL Health-based Archived 1992-08-01 → 1992-08-31
MCL Health-based Archived 1992-08-01 → 1992-08-31
MCL Health-based Archived 1992-08-01 → 1992-08-31
MCL Health-based Archived 1992-08-01 → 1992-08-31
MCL Health-based Archived 1992-06-01 → 1992-06-30

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 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
Lead
0.0015 mg/L 10%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2025
Nitrate
900 µg/L 9%
of the EPA limit 10000 µg/L
 2/16 SYR4 2012–2019
Arsenic
1.2 µg/L 12%
of the EPA limit 10 µg/L
 1/1 SYR4 2016
Fluoride
330 µg/L 8.3%
of the EPA limit 4000 µg/L
 1/1 SYR4 2016
60 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitrate-NitriteNitritePentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
John Mercer

Frequently asked questions about Y-Squalicum Water Assn

Is Y-Squalicum Water Assn tap water safe to drink?

EPA monitoring detected 4 contaminants in Y-Squalicum Water Assn'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 Y-Squalicum Water Assn's water?

EPA monitoring detected Lead, Nitrate, Arsenic, Fluoride. The full list with the level and data source for each is above.

How many people does Y-Squalicum Water Assn serve?

Y-Squalicum Water Assn reports serving 260 people in Washington, per its EPA record.

Has Y-Squalicum Water Assn had any water quality violations?

The EPA has 145 violations on file for Y-Squalicum Water Assn, of which 17 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.