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Tap water quality report

Paramount, CA

EPA monitoring detected 20 contaminants across the 1 water supplier serving Paramount. 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.

1
water supplier
55,200
people served
20
contaminants found
California rankings Lead in California PFAS in California

What was found in Paramount'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
Nitrate
610.2 µg/L 6.1%
of the EPA limit 10000 µg/L
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Fluoride
380 µg/L 9.5%
of the EPA limit 4000 µg/L
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Barium
163.5 µg/L 8.2%
of the EPA limit 2000 µg/L
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Lithium
56 µg/L
No EPA limit set
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2025
1/1 UCMR-5
TTHM
33.919999999999995 µg/L 42%
of the EPA limit 80 µg/L
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
20.32999999999999 µg/L 34%
of the EPA limit 60 µg/L
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Arsenic
19.2 µg/L 192%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Chloroform
13.669999999999998 µg/L
No EPA limit set
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Dibromochloromethane
11.1 µg/L
No EPA limit set
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Bromodichloromethane
10.025 µg/L
No EPA limit set
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Dichloroacetic Acid
9.749 µg/L
No EPA limit set
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Trichloroacetic Acid
6.166999999999997 µg/L
No EPA limit set
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Monochloroacetic Acid
6.136999999999999 µg/L
No EPA limit set
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Dibromoacetic Acid
5.805 µg/L
No EPA limit set
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Bromoform
4.1285 µg/L
No EPA limit set
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Combined Uranium
3.10665 µg/L 10%
of the EPA limit 30 µg/L
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Monobromoacetic Acid
2.041499999999999 µg/L
No EPA limit set
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Dichloromethane
1.1 µg/L 22%
of the EPA limit 5 µg/L
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2019
1/1 SYR4
Ethylene Dibromide
0.0250 µg/L 50%
of the EPA limit 0.0500 µg/L
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2017
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: PARAMOUNT - CITY, WATER DEPT. · 55,200 people · 2025
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 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 Paramount

SupplierPopulation served
PARAMOUNT - CITY, WATER DEPT. 55,200

Frequently asked questions about Paramount tap water

Is Paramount tap water safe to drink?

EPA testing detected 20 contaminants in the water serving Paramount. 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 Paramount?

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

What contaminants are in Paramount's water?

The contaminants EPA monitoring detected in Paramount include Nitrate, Fluoride, Barium, Lithium, TTHM. 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.