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Tap water quality report

Curlew Water & Sewer District

EPA monitoring tested this supplier for 48 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

48
contaminants tested
8
detected
316
people served
8
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Local government
Counties served
Ferry

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.

8
health-based violations
63
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1996-03-01 → 1996-03-31
MCL Health-based Archived 1993-09-01 → 1993-09-30
MCL Health-based Archived 1993-08-01 → 1993-08-31
MCL Health-based Archived 1993-07-01 → 1993-07-31
MCL Health-based Archived 1993-06-01 → 1993-06-30
MCL Health-based Archived 1993-03-01 → 1993-03-31
MCL Health-based Archived 1993-02-01 → 1993-02-28
MCL Health-based Archived 1993-01-01 → 1993-01-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MON Monitoring Resolved 2020-11-01 → 2020-11-30

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 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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
651 µg/L 6.5%
of the EPA limit 10000 µg/L
 14/14 SYR4 2012–2019
Lead
0.00090 mg/L 6%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2025
Copper
48.79 µg/L 3.8%
of the EPA limit 1300 µg/L
worst single sample: 50.7 µg/L
2/2 SYR4 2013–2016
Arsenic
2.19 µg/L 22%
of the EPA limit 10 µg/L
 1/1 SYR4 2016
Barium
19.4 µg/L 1%
of the EPA limit 2000 µg/L
 1/1 SYR4 2016
Fluoride
310 µg/L 7.8%
of the EPA limit 4000 µg/L
 1/1 SYR4 2016
Lead
1.97 µg/L 13%
of the EPA limit 15 µg/L
 1/2 SYR4 2013–2016
Nitrate-Nitrite
556 µg/L 5.6%
of the EPA limit 10000 µg/L
 1/1 SYR4 2016
40 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, TotalBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChloroformChromiumDichloromethaneDalaponDibromochloromethaneDinosebEthylbenzeneMercuryNitritePentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Christopher Roblin

Frequently asked questions about Curlew Water & Sewer District

Is Curlew Water & Sewer District tap water safe to drink?

EPA monitoring detected 8 contaminants in Curlew Water & Sewer 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 Curlew Water & Sewer District's water?

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

How many people does Curlew Water & Sewer District serve?

Curlew Water & Sewer District reports serving 316 people in Washington, per its EPA record.

Has Curlew Water & Sewer District had any water quality violations?

The EPA has 63 violations on file for Curlew Water & Sewer District, of which 8 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.