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Tap water quality report

Duvall City of

EPA monitoring tested this supplier for 41 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

41
contaminants tested
8
detected
11,050
people served
0
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
SWP
Ownership
Local government
Counties served
King

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.

0
health-based violations
6
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2014-10-01 → 2014-12-31
MR Monitoring Resolved 2014-10-01 → 2014-12-31
MR Monitoring Resolved 2014-07-01 → 2014-09-30
MR Monitoring Resolved 2014-07-01 → 2014-09-30
MR Monitoring Resolved 2014-04-01 → 2014-06-30
MR Monitoring Resolved 2014-04-01 → 2014-06-30

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 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
Chloroform
44.15 µg/L
No EPA limit set
worst single sample: 55.8 µg/L
51/51 SYR4 2012–2019
Dichloroacetic Acid
16.45 µg/L
No EPA limit set
worst single sample: 20.8 µg/L
51/51 SYR4 2012–2019
TTHM
47.675 µg/L 60%
of the EPA limit 80 µg/L
worst single sample: 67.42 µg/L
51/51 SYR4 2012–2019
Trichloroacetic Acid
25.1 µg/L
No EPA limit set
worst single sample: 28 µg/L
51/51 SYR4 2012–2019
Bromodichloromethane
3.5375 µg/L
No EPA limit set
worst single sample: 9.77 µg/L
50/50 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
41.14 µg/L 69%
of the EPA limit 60 µg/L
worst single sample: 47.6 µg/L
50/50 SYR4 2012–2019
Monochloroacetic Acid
3.34 µg/L
No EPA limit set
worst single sample: 3.48 µg/L
15/51 SYR4 2012–2019
Dibromochloromethane
1.826 µg/L
No EPA limit set
worst single sample: 1.85 µg/L
2/52 SYR4 2012–2019
33 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaBromoformDibromoacetic AcidHfpo-DaMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaLithium

Utility contact

Contact
Joe Chriest

Frequently asked questions about Duvall City of

Is Duvall City of tap water safe to drink?

EPA monitoring detected 8 contaminants in Duvall City of'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 Duvall City of's water?

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

How many people does Duvall City of serve?

Duvall City of reports serving 11,050 people in Washington, per its EPA record.

Has Duvall City of had any water quality violations?

The EPA has 6 violations on file for Duvall City of, of which 0 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.