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Tap water quality report

Marina, CA

EPA monitoring detected 16 contaminants across the 1 water supplier serving Marina. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
38,377
people served
16
contaminants found
California rankings Lead in California PFAS in California

What was found in Marina's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
1000000 µg/L 10000%
of the EPA limit, in the worst sample — 10000 µg/L
 1/1 SYR4
Nitrate
5800 µg/L 58%
of the EPA limit 10000 µg/L
 1/1 SYR4
Fluoride
280 µg/L 7%
of the EPA limit 4000 µg/L
 1/1 SYR4
Cyanide
100 µg/L 50%
of the EPA limit 200 µg/L
 1/1 SYR4
Lithium
40.9 µg/L
No EPA limit set
 1/1 UCMR-5
TTHM
12 µg/L 15%
of the EPA limit 80 µg/L
 1/1 SYR4
Arsenic
8.6 µg/L 86%
of the EPA limit 10 µg/L
 1/1 SYR4
Bromoform
8.1 µg/L
No EPA limit set
 1/1 SYR4
Combined Uranium
7.152 µg/L 24%
of the EPA limit 30 µg/L
 1/1 SYR4
Selenium
6.4 µg/L 13%
of the EPA limit 50 µg/L
 1/1 SYR4
Dibromochloromethane
3.2 µg/L
No EPA limit set
 1/1 SYR4
Dichloromethane
2.9 µg/L 58%
of the EPA limit 5 µg/L
 1/1 SYR4
Trichloroethylene
2.2 µg/L 44%
of the EPA limit 5 µg/L
 1/1 SYR4
Dibromoacetic Acid
1.6 µg/L
No EPA limit set
 1/1 SYR4
Bromodichloromethane
1.2 µg/L
No EPA limit set
 1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 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 single worst sample on record — 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 Marina

SupplierPopulation served
MARINA COAST WATER DISTRICT 38,377

Frequently asked questions about Marina tap water

Is Marina tap water safe to drink?

EPA testing detected 16 contaminants in the water serving Marina. 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 Marina?

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

What contaminants are in Marina's water?

The contaminants EPA monitoring detected in Marina include Nitrate-Nitrite, Nitrate, Fluoride, Cyanide, Lithium. The full list, with the highest level found 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.