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Tap water quality report

Templeton, CA

EPA monitoring detected 17 contaminants across the 2 water suppliers serving Templeton. 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
8,136
people served
17
contaminants found
California rankings Lead in California PFAS in California

What was found in Templeton'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
930000 µg/L 9300%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
Main supplier: TEMPLETON CSD · 8,011 people · 2019
2/2 SYR4
Nitrate
14757.8 µg/L 148%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
Main supplier: TEMPLETON CSD · 8,011 people · 2019
2/2 SYR4
Fluoride
400 µg/L 10%
of the EPA limit 4000 µg/L
Main supplier: TEMPLETON CSD · 8,011 people · 2019
2/2 SYR4
Barium
208.8 µg/L 10%
of the EPA limit 2000 µg/L
Main supplier: TEMPLETON CSD · 8,011 people · 2019
2/2 SYR4
Selenium
33.2 µg/L 66%
of the EPA limit 50 µg/L
Main supplier: TEMPLETON CSD · 8,011 people · 2019
1/2 SYR4
Lithium
27.3 µg/L
No EPA limit set
Main supplier: TEMPLETON CSD · 8,011 people · 2025
1/2 UCMR-5
Arsenic
15 µg/L 150%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Main supplier: TEMPLETON CSD · 8,011 people · 2019
1/2 SYR4
Combined Uranium
11.3985 µg/L 38%
of the EPA limit 30 µg/L
Main supplier: TEMPLETON CSD · 8,011 people · 2019
1/2 SYR4
Copper
10 µg/L 0.8%
of the EPA limit 1300 µg/L
Main supplier: TEMPLETON CSD · 8,011 people · 2019
1/2 SYR4
Chromium
3 µg/L 3%
of the EPA limit 100 µg/L
Main supplier: TEMPLETON CSD · 8,011 people · 2019
1/2 SYR4
Cadmium
2.78 µg/L 56%
of the EPA limit 5 µg/L
Main supplier: TEMPLETON CSD · 8,011 people · 2019
1/2 SYR4
Lead
0.8750 µg/L 5.8%
of the EPA limit 15 µg/L
Main supplier: TEMPLETON CSD · 8,011 people · 2019
1/2 SYR4
Combined Radium (-226 And -228)
0.4750 pCi/L 9.5%
of the EPA limit 5 pCi/L
Highest in the city: SPANISH LAKES MUTUAL WATER CO · 125 people · 2019
1/2 SYR4
Mercury
0.0500 µg/L 2.5%
of the EPA limit 2 µg/L
Main supplier: TEMPLETON CSD · 8,011 people · 2019
1/2 SYR4
PFBS
0.0068 µg/L
No EPA limit set
Main supplier: TEMPLETON CSD · 8,011 people · 2025
1/2 UCMR-5
PFHXS
0.0032 µg/L
No EPA limit set
Main supplier: TEMPLETON CSD · 8,011 people · 2025
1/2 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: TEMPLETON CSD · 8,011 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 Templeton

SupplierPopulation served
TEMPLETON CSD 8,011
SPANISH LAKES MUTUAL WATER CO 125

Frequently asked questions about Templeton tap water

Is Templeton tap water safe to drink?

EPA testing detected 17 contaminants in the water serving Templeton. 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 Templeton?

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

What contaminants are in Templeton's water?

The contaminants EPA monitoring detected in Templeton include Nitrate-Nitrite, Nitrate, Fluoride, Barium, Selenium. 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.