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Tap water quality report

Olivehurst, CA

EPA monitoring detected 20 contaminants across the 2 water suppliers serving Olivehurst. 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
27,059
people served
20
contaminants found
California rankings Lead in California PFAS in California

What was found in Olivehurst'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
3600 µg/L 36%
of the EPA limit 10000 µg/L
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
2/2 SYR4
Fluoride
470 µg/L 12%
of the EPA limit 4000 µg/L
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2015
Highest in the city: 576.5 µg/L — PLUMAS LAKE · 10,464 people · 2014
2/2 SYR4
Barium
100 µg/L 5%
of the EPA limit 2000 µg/L
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2017
Highest in the city: 148 µg/L — PLUMAS LAKE · 10,464 people · 2016
2/2 SYR4
Copper
83 µg/L 6.4%
of the EPA limit 1300 µg/L
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2017
1/2 SYR4
Lead
24.955 µg/L 166%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2015
1/2 SYR4
Trichloroacetic Acid
14.92 µg/L
No EPA limit set
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
1/2 SYR4
Dichloroacetic Acid
11.875 µg/L
No EPA limit set
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
11 µg/L 18%
of the EPA limit 60 µg/L
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
2/2 SYR4
TTHM
8.56 µg/L 11%
of the EPA limit 80 µg/L
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
2/2 SYR4
Arsenic
5.27 µg/L 53%
of the EPA limit 10 µg/L
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
2/2 SYR4
Bromoform
4.4465 µg/L
No EPA limit set
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
2/2 SYR4
Dibromochloromethane
2.5705 µg/L
No EPA limit set
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
2/2 SYR4
Bromodichloromethane
1.982 µg/L
No EPA limit set
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
Highest in the city: 2.3495 µg/L — PLUMAS LAKE · 10,464 people · 2019
2/2 SYR4
Xylenes, Total
2.122 µg/L 0%
of the EPA limit 10000 µg/L
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
1/2 SYR4
Ethylbenzene
0.6000 µg/L 0.1%
of the EPA limit 700 µg/L
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
Highest in the city: 1.8 µg/L — PLUMAS LAKE · 10,464 people · 2019
2/2 SYR4
Chloroform
1.672 µg/L
No EPA limit set
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
2/2 SYR4
Dibromoacetic Acid
1.625 µg/L
No EPA limit set
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
2/2 SYR4
cis-1,2-Dichloroethylene
0.9830 µg/L 1.4%
of the EPA limit 70 µg/L
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
1/2 SYR4
Dichloromethane
0.6900 µg/L 14%
of the EPA limit 5 µg/L
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2019
1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: OLIVEHURST PUBLIC U.D. · 16,595 people · 2023
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 Olivehurst

SupplierPopulation served
OLIVEHURST PUBLIC U.D. 16,595
PLUMAS LAKE 10,464

Frequently asked questions about Olivehurst tap water

Is Olivehurst tap water safe to drink?

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

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

What contaminants are in Olivehurst's water?

The contaminants EPA monitoring detected in Olivehurst include Nitrate, Fluoride, Barium, Copper, Lead. 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.