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Tap water quality report

Oceano, CA

EPA monitoring detected 20 contaminants across the 1 water supplier serving Oceano. 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
7,601
people served
20
contaminants found
California rankings Lead in California PFAS in California

What was found in Oceano'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
7100 µg/L 71%
of the EPA limit 10000 µg/L
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Nitrate-Nitrite
7100 µg/L 71%
of the EPA limit 10000 µg/L
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Fluoride
360 µg/L 9%
of the EPA limit 4000 µg/L
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Selenium
130 µg/L 260%
of the EPA limit, at the 95th percentile of samples — 50 µg/L
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Copper
89 µg/L 6.8%
of the EPA limit 1300 µg/L
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
TTHM
63.48 µg/L 79%
of the EPA limit 80 µg/L
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Chloroform
24.7 µg/L
No EPA limit set
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
23.93 µg/L 40%
of the EPA limit 60 µg/L
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Bromodichloromethane
17.8 µg/L
No EPA limit set
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Dichloroacetic Acid
16.75 µg/L
No EPA limit set
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Dibromochloromethane
16.68 µg/L
No EPA limit set
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Combined Uranium
12.3223 µg/L 41%
of the EPA limit 30 µg/L
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2017
1/1 SYR4
Bromoform
11.34 µg/L
No EPA limit set
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Dibromoacetic Acid
6.9 µg/L
No EPA limit set
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Lead
6.88 µg/L 46%
of the EPA limit 15 µg/L
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Trichloroacetic Acid
5.47 µg/L
No EPA limit set
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Arsenic
2.8 µg/L 28%
of the EPA limit 10 µg/L
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Monochloroacetic Acid
2.5 µg/L
No EPA limit set
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Cadmium
1.4 µg/L 28%
of the EPA limit 5 µg/L
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2019
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: OCEANO COMM SERVICES DIST. · 7,601 people · 2026
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 Oceano

SupplierPopulation served
OCEANO COMM SERVICES DIST. 7,601

Frequently asked questions about Oceano tap water

Is Oceano tap water safe to drink?

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

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

What contaminants are in Oceano's water?

The contaminants EPA monitoring detected in Oceano include Nitrate, Nitrate-Nitrite, Fluoride, Selenium, Copper. 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.