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Tap water quality report

Whatcom County Water Dist #7

EPA monitoring tested this supplier for 11 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

11
contaminants tested
9
detected
1,410
people served
0
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
SWP
Ownership
Local government
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.

0
health-based violations
2
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2012-07-01
Other Monitoring Resolved 2011-07-01

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
Bromodichloromethane
7 µg/L
No EPA limit set
 29/29 SYR4 2012–2019
Chloroform
54.6 µg/L
No EPA limit set
 29/29 SYR4 2012–2019
TTHM
61.5 µg/L 77%
of the EPA limit 80 µg/L
 29/29 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
36.3 µg/L 61%
of the EPA limit 60 µg/L
 29/29 SYR4 2012–2019
Trichloroacetic Acid
28.6 µg/L
No EPA limit set
 29/29 SYR4 2012–2019
Dichloroacetic Acid
17.3 µg/L
No EPA limit set
 28/29 SYR4 2012–2019
Dibromochloromethane
0.8000 µg/L
No EPA limit set
 6/29 SYR4 2012–2019
Dibromoacetic Acid
1.6 µg/L
No EPA limit set
 4/29 SYR4 2012–2019
Monochloroacetic Acid
2.8 µg/L
No EPA limit set
 2/29 SYR4 2012–2019
2 contaminants tested, none detected
BromoformMonobromoacetic Acid

Utility contact

Contact
Deanna Dobbs

Frequently asked questions about Whatcom County Water Dist #7

Is Whatcom County Water Dist #7 tap water safe to drink?

EPA monitoring detected 9 contaminants in Whatcom County Water Dist #7'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 Whatcom County Water Dist #7's water?

EPA monitoring detected Bromodichloromethane, Chloroform, TTHM, Total Haloacetic Acids (HAA5), Trichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Whatcom County Water Dist #7 serve?

Whatcom County Water Dist #7 reports serving 1,410 people in Washington, per its EPA record.

Has Whatcom County Water Dist #7 had any water quality violations?

The EPA has 2 violations on file for Whatcom County Water Dist #7, 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.