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Tap water quality report

Crescenta Valley Cwd

EPA monitoring tested this supplier for 44 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

44
contaminants tested
20
detected
35,841
people served
6
health-based violations
Water source
SWP
Ownership
Local government
Counties served
Los Angeles

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.

6
health-based violations
6
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1996-11-01 → 1996-11-30
MCL Health-based Resolved 1996-11-01 → 1996-11-30
MCL Health-based Resolved 1994-02-01 → 1994-02-28
MCL Health-based Resolved 1994-02-01 → 1994-02-28
MCL Health-based Resolved 1993-06-01 → 1993-06-30
MCL Health-based Resolved 1993-06-01 → 1993-06-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0068 µg/L 9/16 2023
Pfhxa 0.0080 µg/L 9/15 2023
Pfpea 0.0080 µg/L 9/15 2023
PFHXS 0.0049 µg/L 6/16 2023
PFOA 0.0051 µg/L 3/16 2023
Pfhpa 0.0031 µg/L 1/16 2023

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
Chloroform
32 µg/L
No EPA limit set
190/192 SYR4 2012–2019
Bromodichloromethane
35 µg/L
No EPA limit set
183/208 SYR4 2012–2019
Bromoform
21 µg/L
No EPA limit set
183/208 SYR4 2012–2019
TTHM
100 µg/L 125%
of the EPA limit, in the worst sample — 80 µg/L
183/205 SYR4 2012–2019
Dibromochloromethane
34 µg/L
No EPA limit set
182/209 SYR4 2012–2019
Dibromoacetic Acid
12 µg/L
No EPA limit set
149/168 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
37 µg/L 62%
of the EPA limit 60 µg/L
148/168 SYR4 2012–2019
Dichloroacetic Acid
14 µg/L
No EPA limit set
139/168 SYR4 2012–2019
Trichloroacetic Acid
15 µg/L
No EPA limit set
127/168 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
45/45 LCR 2023
Monobromoacetic Acid
6.6 µg/L
No EPA limit set
26/168 SYR4 2012–2019
Lead
7.4 µg/L 49%
of the EPA limit 15 µg/L
7/86 SYR4 2012–2019
Copper
73 µg/L 5.6%
of the EPA limit 1300 µg/L
6/86 SYR4 2012–2019
Lithium
45 µg/L
No EPA limit set
5/16 UCMR-5 2023
24 contaminants tested, none detected
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Utility contact

Contact
LEE, JAMES
Phone
818-236-4114
Email
JLEE@CVWD.COM

Frequently asked questions about Crescenta Valley Cwd

Is Crescenta Valley Cwd tap water safe to drink?

EPA monitoring detected 20 contaminants in Crescenta Valley Cwd'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 Crescenta Valley Cwd's water?

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

How many people does Crescenta Valley Cwd serve?

Crescenta Valley Cwd reports serving 35,841 people in California, per its EPA record.

Has Crescenta Valley Cwd had any water quality violations?

The EPA has 6 violations on file for Crescenta Valley Cwd, of which 6 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.