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Tap water quality report

El Segundo, CA

EPA monitoring detected 12 contaminants across the 1 water supplier serving El Segundo. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
16,445
people served
12
contaminants found
California rankings Lead in California PFAS in California

What was found in El Segundo's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
TTHM
63.1 µg/L 79%
of the EPA limit 80 µg/L
 1/1 SYR4
Lithium
44 µg/L
No EPA limit set
 1/1 UCMR-5
Chloroform
29.6 µg/L
No EPA limit set
 1/1 SYR4
Total Haloacetic Acids (HAA5)
25.6 µg/L 43%
of the EPA limit 60 µg/L
 1/1 SYR4
Bromodichloromethane
20.2 µg/L
No EPA limit set
 1/1 SYR4
Dibromochloromethane
18.4 µg/L
No EPA limit set
 1/1 SYR4
Dichloroacetic Acid
16.9 µg/L
No EPA limit set
 1/1 SYR4
Bromoform
10.3 µg/L
No EPA limit set
 1/1 SYR4
Trichloroacetic Acid
8.7 µg/L
No EPA limit set
 1/1 SYR4
Dibromoacetic Acid
5.7 µg/L
No EPA limit set
 1/1 SYR4
Monochloroacetic Acid
3.4 µg/L
No EPA limit set
 1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 1/1 LCR
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. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving El Segundo

SupplierPopulation served
EL SEGUNDO-CITY, WATER DEPT. 16,445

Frequently asked questions about El Segundo tap water

Is El Segundo tap water safe to drink?

EPA testing detected 12 contaminants in the water serving El Segundo. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve El Segundo?

1 public water supplier report drinking-water monitoring for El Segundo, California to the EPA. Each is listed above with its population served.

What contaminants are in El Segundo's water?

The contaminants EPA monitoring detected in El Segundo include TTHM, Lithium, Chloroform, Total Haloacetic Acids (HAA5), Bromodichloromethane. The full list, with the highest level found and the data source, is in the table above.

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.