Tap WaterIndex

← Laguna Hills, CA

Tap water quality report

ZIP 92656 — Laguna Hills, CA

EPA monitoring across the 2 water suppliers serving ZIP 92656 in Laguna Hills, CA detected 12 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

2
water suppliers
222,036
people served
12
contaminants found

What was found in ZIP 92656

The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
TTHM
64.77 µg/L 81%
of the EPA limit 80 µg/L
Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019
Highest in the ZIP: 68.51 µg/L — EL TORO WATER DISTRICT · 51,800 people · 2019
2/2 SYR4
Lithium
43 µg/L
No EPA limit set
Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2024
Highest in the ZIP: 45 µg/L — EL TORO WATER DISTRICT · 51,800 people · 2024
2/2 UCMR-5
Total Haloacetic Acids (HAA5)
27.225 µg/L 45%
of the EPA limit 60 µg/L
Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019
2/2 SYR4
Dibromochloromethane
25.64 µg/L
No EPA limit set
Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019
2/2 SYR4
Chloroform
19.885 µg/L
No EPA limit set
Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019
Highest in the ZIP: 23.31 µg/L — EL TORO WATER DISTRICT · 51,800 people · 2019
2/2 SYR4
Bromodichloromethane
18.755 µg/L
No EPA limit set
Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019
Highest in the ZIP: 22.42 µg/L — EL TORO WATER DISTRICT · 51,800 people · 2019
2/2 SYR4
Dichloroacetic Acid
14.66 µg/L
No EPA limit set
Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019
2/2 SYR4
Trichloroacetic Acid
8.0155 µg/L
No EPA limit set
Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019
Highest in the ZIP: 12.5 µg/L — EL TORO WATER DISTRICT · 51,800 people · 2019
2/2 SYR4
Bromoform
10.4 µg/L
No EPA limit set
Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019
2/2 SYR4
Dibromoacetic Acid
9.411 µg/L
No EPA limit set
Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2019
2/2 SYR4
Pfba
0.0067 µg/L
No EPA limit set
Highest in the ZIP: EL TORO WATER DISTRICT · 51,800 people · 2024
1/2 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: MOULTON NIGUEL WATER DISTRICT · 170,236 people · 2024
Highest in the ZIP: 0.00080 mg/L — EL TORO WATER DISTRICT · 51,800 people · 2023
2/2 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 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.

Water suppliers serving ZIP 92656

SupplierStatePopulation served
MOULTON NIGUEL WATER DISTRICT CA 170,236
EL TORO WATER DISTRICT CA 51,800

Frequently asked questions about ZIP 92656 tap water

Is the tap water in ZIP 92656 safe to drink?

EPA testing detected 12 contaminants across the water suppliers serving ZIP 92656. 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 92656?

2 public water suppliers report EPA drinking-water monitoring for ZIP 92656. Each is listed above with its population served.

What contaminants are in ZIP 92656's water?

EPA monitoring detected TTHM, Lithium, Total Haloacetic Acids (HAA5), Dibromochloromethane, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.