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Tap water quality report

Manhattan Beach, CA

EPA monitoring detected 18 contaminants across the 2 water suppliers serving Manhattan Beach. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
32,777
people served
18
contaminants found
California rankings Lead in California PFAS in California

What was found in Manhattan Beach's water

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

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
362 µg/L 9%
of the EPA limit 4000 µg/L
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2018
Highest in the city: 3450 µg/L — CAMP WILLIAMS-RESORT WATER · 80 people · 2015
2/2 SYR4
Nitrate
420 µg/L 4.2%
of the EPA limit 10000 µg/L
Highest in the city: CAMP WILLIAMS-RESORT WATER · 80 people · 2019
1/2 SYR4
Barium
110 µg/L 5.5%
of the EPA limit 2000 µg/L
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2018
1/2 SYR4
TTHM
66.77 µg/L 83%
of the EPA limit 80 µg/L
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2019
1/2 SYR4
Lithium
51.4 µg/L
No EPA limit set
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2025
1/2 UCMR-5
Bromate
38.1 µg/L 381%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2019
1/2 SYR4
Dibromochloromethane
20.085 µg/L
No EPA limit set
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
19.8 µg/L 33%
of the EPA limit 60 µg/L
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2019
1/2 SYR4
Bromoform
17.86 µg/L
No EPA limit set
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2019
1/2 SYR4
Bromodichloromethane
15.71 µg/L
No EPA limit set
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2019
1/2 SYR4
Chloroform
15.69 µg/L
No EPA limit set
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2019
1/2 SYR4
Dichloroacetic Acid
9.42 µg/L
No EPA limit set
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2019
1/2 SYR4
Dibromoacetic Acid
7.95 µg/L
No EPA limit set
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2019
1/2 SYR4
Trichloroacetic Acid
7.575 µg/L
No EPA limit set
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2019
1/2 SYR4
Arsenic
3.2 µg/L 32%
of the EPA limit 10 µg/L
Highest in the city: CAMP WILLIAMS-RESORT WATER · 80 people · 2015
1/2 SYR4
Monochloroacetic Acid
3.2 µg/L
No EPA limit set
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2019
1/2 SYR4
Monobromoacetic Acid
1.29 µg/L
No EPA limit set
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2019
1/2 SYR4
Lead
0.0054 mg/L 36%
of the EPA limit 0.0150 mg/L
Main supplier: MANHATTAN BEACH-CITY, WATER DEPT. · 32,697 people · 2025
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. 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 Manhattan Beach

SupplierPopulation served
MANHATTAN BEACH-CITY, WATER DEPT. 32,697
CAMP WILLIAMS-RESORT WATER 80

Frequently asked questions about Manhattan Beach tap water

Is Manhattan Beach tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Manhattan Beach. 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 Manhattan Beach?

2 public water suppliers report drinking-water monitoring for Manhattan Beach, California to the EPA. Each is listed above with its population served.

What contaminants are in Manhattan Beach's water?

The contaminants EPA monitoring detected in Manhattan Beach include Fluoride, Nitrate, Barium, TTHM, Lithium. The full list, with the level at the main supplier 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.