← Hawthorne, CA

Tap water quality report

ZIP 90245 — Hawthorne, CA

EPA monitoring across the 3 water suppliers serving ZIP 90245 in Hawthorne, CA detected 19 contaminants. A detection doesn't automatically mean the water is unsafe — see the highest level found below, with the EPA limit for each.

3
water suppliers
338,903
people served
19
contaminants found

What was found in ZIP 90245

The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
959 µg/L 24%
of the EPA limit 4000 µg/L
2/3 SYR4
TTHM
121.83 µg/L 152%
of the EPA limit, in the worst sample — 80 µg/L
3/3 SYR4
Barium
120 µg/L 6%
of the EPA limit 2000 µg/L
1/3 SYR4
Lithium
51.3 µg/L
No EPA limit set
3/3 UCMR-5
Dibromochloromethane
45 µg/L
No EPA limit set
3/3 SYR4
Chloroform
40 µg/L
No EPA limit set
3/3 SYR4
Total Haloacetic Acids (HAA5)
37 µg/L 62%
of the EPA limit 60 µg/L
3/3 SYR4
Bromoform
36.5 µg/L
No EPA limit set
3/3 SYR4
Bromodichloromethane
29 µg/L
No EPA limit set
3/3 SYR4
Copper
20.56 µg/L 1.6%
of the EPA limit 1300 µg/L
1/3 SYR4
Dichloroacetic Acid
18 µg/L
No EPA limit set
3/3 SYR4
Trichloroacetic Acid
17 µg/L
No EPA limit set
3/3 SYR4
Dibromoacetic Acid
12 µg/L
No EPA limit set
3/3 SYR4
Monochloroacetic Acid
6.8 µg/L
No EPA limit set
3/3 SYR4
Combined Uranium
5.96 µg/L 20%
of the EPA limit 30 µg/L
1/3 SYR4
Selenium
5.3 µg/L 11%
of the EPA limit 50 µg/L
1/3 SYR4
Monobromoacetic Acid
3.1 µg/L
No EPA limit set
2/3 SYR4
Arsenic
3 µg/L 30%
of the EPA limit 10 µg/L
1/3 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
3/3 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.

Water suppliers serving ZIP 90245

SupplierStatePopulation served
GSWC - SOUTHWEST CA 277,740
HAWTHORNE-CITY WATER DEPT. CA 44,718
EL SEGUNDO-CITY, WATER DEPT. CA 16,445

Frequently asked questions about ZIP 90245 tap water

Is the tap water in ZIP 90245 safe to drink?

EPA testing detected 19 contaminants across the water suppliers serving ZIP 90245. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 90245?

3 public water suppliers report EPA drinking-water monitoring for ZIP 90245. Each is listed above with its population served.

What contaminants are in ZIP 90245's water?

EPA monitoring detected Fluoride, TTHM, Barium, Lithium, Dibromochloromethane, and others across this ZIP's suppliers. The full list with levels and sources is above.