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Tap water quality report

Big Bear City, CA

EPA monitoring detected 22 contaminants across the 1 water supplier serving Big Bear City. 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
12,738
people served
22
contaminants found
California rankings Lead in California PFAS in California

What was found in Big Bear City'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-Nitrite
820000 µg/L 8200%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2017
1/1 SYR4
Fluoride
4800 µg/L 120%
of the EPA limit, at the 95th percentile of samples — 4000 µg/L
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2019
1/1 SYR4
Nitrate
4200 µg/L 42%
of the EPA limit 10000 µg/L
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2019
1/1 SYR4
Combined Uranium
12.1956 µg/L 41%
of the EPA limit 30 µg/L
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2018
1/1 SYR4
Trichloroethylene
6.115 µg/L 122%
of the EPA limit, at the 95th percentile of samples — 5 µg/L
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2019
1/1 SYR4
TTHM
4.825 µg/L 6%
of the EPA limit 80 µg/L
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2019
1/1 SYR4
Dibromochloromethane
2.28 µg/L
No EPA limit set
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2019
1/1 SYR4
Bromodichloromethane
1.755 µg/L
No EPA limit set
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2019
1/1 SYR4
Xylenes, Total
1.7 µg/L 0%
of the EPA limit 10000 µg/L
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2018
1/1 SYR4
Bromoform
1.51 µg/L
No EPA limit set
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2019
1/1 SYR4
Dibromoacetic Acid
1 µg/L
No EPA limit set
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
1 µg/L 1.7%
of the EPA limit 60 µg/L
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2019
1/1 SYR4
Carbon Tetrachloride
0.8455 µg/L 17%
of the EPA limit 5 µg/L
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2019
1/1 SYR4
PFHXS
0.0360 µg/L
No EPA limit set
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2024
1/1 UCMR-5
Pfpea
0.0120 µg/L
No EPA limit set
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2024
1/1 UCMR-5
Pfhxa
0.0110 µg/L
No EPA limit set
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2024
1/1 UCMR-5
PFOS
0.0099 µg/L
No EPA limit set
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2024
1/1 UCMR-5
PFBS
0.0092 µg/L
No EPA limit set
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2024
1/1 UCMR-5
Pfpes
0.0074 µg/L
No EPA limit set
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2024
1/1 UCMR-5
PFOA
0.0045 µg/L
No EPA limit set
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2024
1/1 UCMR-5
Pfhpa
0.0035 µg/L
No EPA limit set
Main supplier: BIG BEAR CITY CSD · 12,738 people · 2024
1/1 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: BIG BEAR CITY CSD · 12,738 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 Big Bear City

SupplierPopulation served
BIG BEAR CITY CSD 12,738

Frequently asked questions about Big Bear City tap water

Is Big Bear City tap water safe to drink?

EPA testing detected 22 contaminants in the water serving Big Bear City. 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 Big Bear City?

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

What contaminants are in Big Bear City's water?

The contaminants EPA monitoring detected in Big Bear City include Nitrate-Nitrite, Fluoride, Nitrate, Combined Uranium, Trichloroethylene. 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.