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Tap water quality report

Rio Linda, CA

EPA monitoring detected 10 contaminants across the 1 water supplier serving Rio Linda. 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
15,460
people served
10
contaminants found
California rankings Lead in California PFAS in California

What was found in Rio Linda'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
2505 µg/L 25%
of the EPA limit 10000 µg/L
Main supplier: RIO LINDA/ELVERTA COMMUNITY WATER DIST · 15,460 people · 2019
1/1 SYR4
Nitrate-Nitrite
760 µg/L 7.6%
of the EPA limit 10000 µg/L
Main supplier: RIO LINDA/ELVERTA COMMUNITY WATER DIST · 15,460 people · 2019
1/1 SYR4
Fluoride
284 µg/L 7.1%
of the EPA limit 4000 µg/L
Main supplier: RIO LINDA/ELVERTA COMMUNITY WATER DIST · 15,460 people · 2019
1/1 SYR4
Barium
148 µg/L 7.4%
of the EPA limit 2000 µg/L
Main supplier: RIO LINDA/ELVERTA COMMUNITY WATER DIST · 15,460 people · 2019
1/1 SYR4
Chromium
17 µg/L 17%
of the EPA limit 100 µg/L
Main supplier: RIO LINDA/ELVERTA COMMUNITY WATER DIST · 15,460 people · 2019
1/1 SYR4
Lithium
12.9 µg/L
No EPA limit set
Main supplier: RIO LINDA/ELVERTA COMMUNITY WATER DIST · 15,460 people · 2024
1/1 UCMR-5
Arsenic
11 µg/L 110%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Main supplier: RIO LINDA/ELVERTA COMMUNITY WATER DIST · 15,460 people · 2019
1/1 SYR4
Pfhxa
0.0048 µg/L
No EPA limit set
Main supplier: RIO LINDA/ELVERTA COMMUNITY WATER DIST · 15,460 people · 2024
1/1 UCMR-5
PFHXS
0.0040 µg/L
No EPA limit set
Main supplier: RIO LINDA/ELVERTA COMMUNITY WATER DIST · 15,460 people · 2024
1/1 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: RIO LINDA/ELVERTA COMMUNITY WATER DIST · 15,460 people · 2023
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 Rio Linda

SupplierPopulation served
RIO LINDA/ELVERTA COMMUNITY WATER DIST 15,460

Frequently asked questions about Rio Linda tap water

Is Rio Linda tap water safe to drink?

EPA testing detected 10 contaminants in the water serving Rio Linda. 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 Rio Linda?

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

What contaminants are in Rio Linda's water?

The contaminants EPA monitoring detected in Rio Linda include Nitrate, Nitrate-Nitrite, Fluoride, Barium, Chromium. 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.