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Tap water quality report

Deer Creek Water Assn/Guide South

EPA monitoring tested this supplier for 12 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

12
contaminants tested
8
detected
251
people served
0
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
SWP
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.

0
health-based violations
8
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
Other Monitoring Resolved 2016-07-01
MR Monitoring Resolved 2016-01-01 → 2016-12-31
MR Monitoring Resolved 2016-01-01 → 2016-12-31
Other Monitoring Resolved 2015-07-01
MR Monitoring Resolved 2014-01-01 → 2014-12-31
MR Monitoring Resolved 2014-01-01 → 2014-12-31

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 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
8.9 µg/L
No EPA limit set
 4/4 SYR4 2015–2019
Chloroform
58.8 µg/L
No EPA limit set
 4/4 SYR4 2015–2019
Dichloroacetic Acid
4 µg/L
No EPA limit set
 4/4 SYR4 2015–2019
TTHM
68.6 µg/L 86%
of the EPA limit 80 µg/L
 4/4 SYR4 2015–2019
Total Haloacetic Acids (HAA5)
17.9 µg/L 30%
of the EPA limit 60 µg/L
 4/4 SYR4 2015–2019
Trichloroacetic Acid
15.3 µg/L
No EPA limit set
 4/4 SYR4 2015–2019
Dibromochloromethane
0.9000 µg/L
No EPA limit set
 3/4 SYR4 2015–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 2/2 LCR 2008
4 contaminants tested, none detected
BromoformDibromoacetic AcidMonobromoacetic AcidMonochloroacetic Acid

Utility contact

Contact
Douglas Wittinger

Frequently asked questions about Deer Creek Water Assn/Guide South

Is Deer Creek Water Assn/Guide South tap water safe to drink?

EPA monitoring detected 8 contaminants in Deer Creek Water Assn/Guide South'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 Deer Creek Water Assn/Guide South's water?

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

How many people does Deer Creek Water Assn/Guide South serve?

Deer Creek Water Assn/Guide South reports serving 251 people in Washington, per its EPA record.

Has Deer Creek Water Assn/Guide South had any water quality violations?

The EPA has 8 violations on file for Deer Creek Water Assn/Guide South, 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.