VOCs & pesticides · 2025
1,2,3-TCP in City of Stockton, CA tap water
City of Stockton, CA's 2025 1,2,3-TCP measurement is below the federal limit of 0.005 UG/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Source water | 0.0032 UG/L | 0.005 UG/L MCL |
Highest single sample Source water | 0.0067 UG/L | 0.005 UG/L MCL |
Verbatim from City of Stockton, CA's 2025 Consumer Confidence Report — source document ↗
How City of Stockton, CA compares
5 of the 158 systems measuring 1,2,3-TCP on The Water Map have it at or above the federal limit:
Nearby systems also reporting 1,2,3-TCP:
People also ask
+Is there 1,2,3-TCP in City of Stockton, CA tap water?
Yes — City of Stockton, CA's 2025 Consumer Confidence Report lists 1,2,3-TCP at 0.0032 UG/L. City of Stockton, CA's 2025 1,2,3-TCP measurement is below the federal limit of 0.005 UG/L (MCL).
+What's the federal limit for 1,2,3-TCP in drinking water?
The federal MCL for 1,2,3-TCP is 0.005 UG/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+Which other U.S. cities have 1,2,3-TCP over the federal limit?
5 of the 158 systems on The Water Map measuring 1,2,3-TCP report it at or above the federal limit. Examples include Burbank-city, Water Dept., CA, Burbank-city, Water Dept., CA, Burbank, CA.
+Where does this 1,2,3-TCP measurement come from?
This page reproduces the 1,2,3-TCP entry from the 2025 Consumer Confidence Report published by the City of Stockton, CA water utility — the annual drinking-water report every U.S. utility is required by federal law to publish. The original source document is archived at /water/ca/stockton/2025/source.