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Tap water quality report

Winterhaven County Water District

EPA monitoring tested this supplier for 14 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

14
contaminants tested
5
detected
394
people served
1
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Local government
Counties served
Imperial

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.

1
health-based violations
28
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2024-10-17
RPT Monitoring Unaddressed 2024-10-17
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2024-12-31
MR Monitoring Resolved 2022-01-01 → 2024-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2022-01-01 → 2022-12-31

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 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
32000 µg/L 320%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
 4/4 SYR4 2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 2/2 LCR 2021
Bromodichloromethane
0.7100 µg/L
No EPA limit set
 1/1 SYR4 2018
Chloroform
1.3 µg/L
No EPA limit set
 1/1 SYR4 2018
TTHM
2 µg/L 2.5%
of the EPA limit 80 µg/L
 1/1 SYR4 2018
9 contaminants tested, none detected
BromoformDibromoacetic AcidDibromochloromethaneDichloroacetic AcidMonobromoacetic AcidMonochloroacetic AcidNitriteTotal Haloacetic Acids (HAA5)Trichloroacetic Acid

Utility contact

Contact
GLENN, LETICIA
Phone
760-550-2068
Email
whavenca@gmail.com

Frequently asked questions about Winterhaven County Water District

Is Winterhaven County Water District tap water safe to drink?

EPA monitoring detected 5 contaminants in Winterhaven County Water 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 Winterhaven County Water District's water?

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

How many people does Winterhaven County Water District serve?

Winterhaven County Water District reports serving 394 people in California, per its EPA record.

Has Winterhaven County Water District had any water quality violations?

The EPA has 28 violations on file for Winterhaven County Water District, of which 1 is health-based (a contaminant limit or required treatment was breached) and 2 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.