Physical & aggregate · 2026
Color in San Diego, City of, CA tap water
San Diego, City of, CA's 2026 Color measurement is below the federal limit of 15 UNITS (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Other | 14 UNITS | 15 UNITS MCL |
Highest single sample Entry point | 3 UNITS | 15 UNITS MCL |
Average Other | 10.416666666666666 UNITS | 15 UNITS MCL |
Average Entry point | 1 UNITS | 15 UNITS MCL |
Average Source water | 9.428571428571429 UNITS | 15 UNITS MCL |
Highest single sample Source water | 20 UNITS | 15 UNITS MCL |
Verbatim from San Diego, City of, CA's 2026 Consumer Confidence Report — source document ↗
About Color
A measure of visible tint in the water.
Regulated only as a secondary (cosmetic) standard.
How San Diego, City of, CA compares
5 of the 196 systems measuring Color on The Water Map have it at or above the federal limit:
Nearby systems also reporting Color:
People also ask
+Is there Color in San Diego, City of, CA tap water?
Yes — San Diego, City of, CA's 2026 Consumer Confidence Report lists Color at 10.416666666666666 UNITS. San Diego, City of, CA's 2026 Color measurement is below the federal limit of 15 UNITS (MCL).
+What's the federal limit for Color in drinking water?
The federal MCL for Color is 15 UNITS. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Color?
A measure of visible tint in the water. Regulated only as a secondary (cosmetic) standard.
+Which other U.S. cities have Color over the federal limit?
5 of the 196 systems on The Water Map measuring Color report it at or above the federal limit. Examples include City of Vallejo, CA, City of Fairfield, CA, City of Vallejo, CA.
+Where does this Color measurement come from?
This page reproduces the Color entry from the 2026 Consumer Confidence Report published by the San Diego, City of, 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/2026/source.