Metals · 2023
Boron in San Diego, CA tap water
San Diego, CA's 2023 Boron measurement is below the federal limit of 1 mg/L (NL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range Alvarado | 0.1–0.1 mg/L | 1 mg/L NL |
Range Miramar | 0.1–0.1 mg/L | 1 mg/L NL |
Average Purchased Treated Water | 0.4 mg/L | 1 mg/L NL |
Range Purchased Treated Water | 0.1–0.9 mg/L | 1 mg/L NL |
Average Alvarado | 0.1 mg/L | 1 mg/L NL |
Average Miramar | 0.1 mg/L | 1 mg/L NL |
Average Otay | 0.2 mg/L | 1 mg/L NL |
Range Otay | 0.1–0.2 mg/L | 1 mg/L NL |
Verbatim from San Diego, CA's 2023 Consumer Confidence Report — source document ↗
About Boron
A naturally occurring element from rock and soil.
No enforceable federal limit; the EPA has issued a health advisory level.
How San Diego, CA compares
5 of the 57 systems measuring Boron on The Water Map have it at or above the federal limit:
Nearby systems also reporting Boron:
People also ask
+Is there Boron in San Diego, CA tap water?
Yes — San Diego, CA's 2023 Consumer Confidence Report lists Boron at 0.4 mg/L. San Diego, CA's 2023 Boron measurement is below the federal limit of 1 mg/L (NL).
+What's the federal limit for Boron in drinking water?
The federal NL for Boron is 1 mg/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Boron?
A naturally occurring element from rock and soil. No enforceable federal limit; the EPA has issued a health advisory level.
+Which other U.S. cities have Boron over the federal limit?
5 of the 57 systems on The Water Map measuring Boron report it at or above the federal limit. Examples include Oxnard, CA, Burbank, CA, Inglewood, CA.
+Where does this Boron measurement come from?
This page reproduces the Boron entry from the 2023 Consumer Confidence Report published by the San Diego, 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/san-diego/2023/source.