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Tap water quality report

Temescal Valley Water District

EPA monitoring tested this supplier for 42 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

42
contaminants tested
11
detected
21,971
people served
4
health-based violations
Water source
SWP
Ownership
Local government
Counties served
Riverside

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.

4
health-based violations
16
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2003-09-01 → 2003-09-30
MCL Health-based Resolved 2003-09-01 → 2003-09-30
MCL Health-based Resolved 2002-12-01 → 2002-12-31
MCL Health-based Resolved 2002-12-01 → 2002-12-31
MR Monitoring Addressed 2023-10-01
MR Monitoring Resolved 2013-04-01 → 2013-06-30
MR Monitoring Resolved 2013-04-01 → 2013-06-30
MR Monitoring Resolved 2013-04-01 → 2013-06-30
MR Monitoring Resolved 2013-04-01 → 2013-06-30
MR Monitoring Resolved 2011-10-01 → 2011-10-31

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
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
32/32 LCR 2024
Bromodichloromethane
20 µg/L
No EPA limit set
24/24 SYR4 2018–2019
Bromoform
17 µg/L
No EPA limit set
24/24 SYR4 2018–2019
Chloroform
17 µg/L
No EPA limit set
24/24 SYR4 2018–2019
Dibromochloromethane
14 µg/L
No EPA limit set
24/24 SYR4 2018–2019
TTHM
56 µg/L 70%
of the EPA limit 80 µg/L
24/24 SYR4 2018–2019
Total Haloacetic Acids (HAA5)
13 µg/L 22%
of the EPA limit 60 µg/L
12/24 SYR4 2018–2019
Dibromoacetic Acid
3.6 µg/L
No EPA limit set
11/24 SYR4 2018–2019
Dichloroacetic Acid
4.8 µg/L
No EPA limit set
8/24 SYR4 2018–2019
Monochloroacetic Acid
6.2 µg/L
No EPA limit set
4/24 SYR4 2018–2019
Trichloroacetic Acid
7.2 µg/L
No EPA limit set
4/24 SYR4 2018–2019
31 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaHfpo-DaMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaLithium

Utility contact

Contact
PAPE, JEFF
Phone
951-277-1414
Email
JeffP@temescalvwd.com

Frequently asked questions about Temescal Valley Water District

Is Temescal Valley Water District tap water safe to drink?

EPA monitoring detected 11 contaminants in Temescal Valley 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 Temescal Valley Water District's water?

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

How many people does Temescal Valley Water District serve?

Temescal Valley Water District reports serving 21,971 people in California, per its EPA record.

Has Temescal Valley Water District had any water quality violations?

The EPA has 16 violations on file for Temescal Valley Water District, of which 4 are health-based (a contaminant limit or required treatment was breached) and 1 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.