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Tap water quality report

Maywood, CA

EPA monitoring detected 22 contaminants across the 2 water suppliers serving Maywood. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
12,408
people served
22
contaminants found
California rankings Lead in California PFAS in California

What was found in Maywood'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
Nitrate
3842 µg/L 38%
of the EPA limit 10000 µg/L
 2/2 SYR4
Fluoride
370 µg/L 9.3%
of the EPA limit 4000 µg/L
 2/2 SYR4
Barium
120 µg/L 6%
of the EPA limit 2000 µg/L
 2/2 SYR4
TTHM
109.9 µg/L 137%
of the EPA limit, in the worst sample — 80 µg/L
 2/2 SYR4
Lead
60 µg/L 400%
of the EPA limit, in the worst sample — 15 µg/L
 1/2 SYR4
Dibromochloromethane
42.7 µg/L
No EPA limit set
 2/2 SYR4
Bromoform
40.8 µg/L
No EPA limit set
 2/2 SYR4
Lithium
21.8 µg/L
No EPA limit set
 2/2 UCMR-5
Total Haloacetic Acids (HAA5)
19.8 µg/L 33%
of the EPA limit 60 µg/L
 2/2 SYR4
Bromodichloromethane
19 µg/L
No EPA limit set
 2/2 SYR4
Dibromoacetic Acid
15.9 µg/L
No EPA limit set
 2/2 SYR4
Chloroform
13.6 µg/L
No EPA limit set
 2/2 SYR4
Dichloroacetic Acid
8.8 µg/L
No EPA limit set
 2/2 SYR4
Trichloroethylene
5.5 µg/L 110%
of the EPA limit, in the worst sample — 5 µg/L
 1/2 SYR4
Combined Uranium
3.129 µg/L 10%
of the EPA limit 30 µg/L
 1/2 SYR4
Monochloroacetic Acid
3.1 µg/L
No EPA limit set
 1/2 SYR4
Trichloroacetic Acid
3 µg/L
No EPA limit set
 2/2 SYR4
Dichloromethane
1.1 µg/L 22%
of the EPA limit 5 µg/L
 1/2 SYR4
PFOS
0.0264 µg/L
No EPA limit set
 2/2 UCMR-5
PFOA
0.0073 µg/L
No EPA limit set
 1/2 UCMR-5
PFHXS
0.0061 µg/L
No EPA limit set
 1/2 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 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 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 Maywood

SupplierPopulation served
MAYWOOD MUTUAL WATER CO. #2 6,349
MAYWOOD MUTUAL WATER CO. #3 6,059

Frequently asked questions about Maywood tap water

Is Maywood tap water safe to drink?

EPA testing detected 22 contaminants in the water serving Maywood. 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 Maywood?

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

What contaminants are in Maywood's water?

The contaminants EPA monitoring detected in Maywood include Nitrate, Fluoride, Barium, TTHM, Lead. 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.