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Tap water quality report

El Segundo-City, Water Dept.

EPA monitoring tested this supplier for 42 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

42
contaminants tested
12
detected
16,445
people served
0
health-based violations
California rankingsLead in CaliforniaPFAS in California
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.

0
health-based violations
4
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2019-10-01
MR Monitoring Resolved 2019-10-01
MR Monitoring Resolved 1993-01-01 → 1993-01-31
MR Monitoring Resolved 1993-01-01 → 1993-01-31

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
Total Haloacetic Acids (HAA5)
25.6 µg/L 43%
of the EPA limit 60 µg/L
 248/248 SYR4 2012–2019
Dichloroacetic Acid
16.9 µg/L
No EPA limit set
 246/248 SYR4 2012–2019
Bromodichloromethane
20.2 µg/L
No EPA limit set
 240/240 SYR4 2012–2019
Dibromochloromethane
18.4 µg/L
No EPA limit set
 240/240 SYR4 2012–2019
TTHM
63.1 µg/L 79%
of the EPA limit 80 µg/L
 240/240 SYR4 2012–2019
Dibromoacetic Acid
5.7 µg/L
No EPA limit set
 238/248 SYR4 2012–2019
Bromoform
10.3 µg/L
No EPA limit set
 234/240 SYR4 2012–2019
Chloroform
29.6 µg/L
No EPA limit set
 221/240 SYR4 2012–2019
Trichloroacetic Acid
8.7 µg/L
No EPA limit set
 142/248 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 21/21 LCR 2023
Monochloroacetic Acid
3.4 µg/L
No EPA limit set
 11/248 SYR4 2012–2019
Lithium
44 µg/L
No EPA limit set
 2/4 UCMR-5 2025
30 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaHfpo-DaMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfuna

Utility contact

Contact
ESPARZA, ANTHONY
Phone
310-524-2746
Email
aesparza@elsegundo.org

Frequently asked questions about El Segundo-City, Water Dept.

Is El Segundo-City, Water Dept. tap water safe to drink?

EPA monitoring detected 12 contaminants in El Segundo-City, Water Dept.'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 El Segundo-City, Water Dept.'s water?

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

How many people does El Segundo-City, Water Dept. serve?

El Segundo-City, Water Dept. reports serving 16,445 people in California, per its EPA record.

Has El Segundo-City, Water Dept. had any water quality violations?

The EPA has 4 violations on file for El Segundo-City, Water Dept., 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.