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Tap water quality report

Edison, CA

EPA monitoring detected 11 contaminants across the 1 water supplier serving Edison. 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
438
people served
11
contaminants found
California rankings Lead in California PFAS in California

What was found in Edison'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
22000 µg/L 220%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
Main supplier: SON SHINE PROPERTIES · 438 people · 2019
1/1 SYR4
Barium
188.5 µg/L 9.4%
of the EPA limit 2000 µg/L
Main supplier: SON SHINE PROPERTIES · 438 people · 2019
1/1 SYR4
Fluoride
110 µg/L 2.8%
of the EPA limit 4000 µg/L
Main supplier: SON SHINE PROPERTIES · 438 people · 2019
1/1 SYR4
Copper
36 µg/L 2.8%
of the EPA limit 1300 µg/L
Main supplier: SON SHINE PROPERTIES · 438 people · 2019
1/1 SYR4
Arsenic
6.985 µg/L 70%
of the EPA limit 10 µg/L
Main supplier: SON SHINE PROPERTIES · 438 people · 2019
1/1 SYR4
Selenium
5.07 µg/L 10%
of the EPA limit 50 µg/L
Main supplier: SON SHINE PROPERTIES · 438 people · 2019
1/1 SYR4
TTHM
4.6 µg/L 5.8%
of the EPA limit 80 µg/L
Main supplier: SON SHINE PROPERTIES · 438 people · 2017
1/1 SYR4
Bromoform
3.1 µg/L
No EPA limit set
Main supplier: SON SHINE PROPERTIES · 438 people · 2017
1/1 SYR4
Dibromochloromethane
1.3 µg/L
No EPA limit set
Main supplier: SON SHINE PROPERTIES · 438 people · 2017
1/1 SYR4
1,2-DIBROMO-3-CHLOROPROPANE
0.6095 µg/L 305%
of the EPA limit, at the 95th percentile of samples — 0.2000 µg/L
Main supplier: SON SHINE PROPERTIES · 438 people · 2019
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: SON SHINE PROPERTIES · 438 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 Edison

SupplierPopulation served
SON SHINE PROPERTIES 438

Frequently asked questions about Edison tap water

Is Edison tap water safe to drink?

EPA testing detected 11 contaminants in the water serving Edison. 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 Edison?

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

What contaminants are in Edison's water?

The contaminants EPA monitoring detected in Edison include Nitrate, Barium, Fluoride, Copper, Arsenic. 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.