Metals · 2025
Mercury in Riverside, City of, CA tap water
Riverside, City of, CA's 2025 Mercury measurement is below the federal limit of 2 UG/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Highest single sample Source water | 0.24 UG/L | 2 UG/L MCL |
Average Source water | 0.10585365853658536 UG/L | 2 UG/L MCL |
Highest single sample Entry point | Not detected UG/L | 2 UG/L MCL |
Highest single sample Distribution | Not detected UG/L | 2 UG/L MCL |
Verbatim from Riverside, City of, CA's 2025 Consumer Confidence Report — source document ↗
About Mercury
A toxic metal from erosion of natural deposits and industrial runoff.
Long-term exposure above the federal limit can damage the kidneys.
How Riverside, City of, CA compares
2 of the 192 systems measuring Mercury on The Water Map have it at or above the federal limit:
Nearby systems also reporting Mercury:
People also ask
+Is there Mercury in Riverside, City of, CA tap water?
Yes — Riverside, City of, CA's 2025 Consumer Confidence Report lists Mercury at 0.10585365853658536 UG/L. Riverside, City of, CA's 2025 Mercury measurement is below the federal limit of 2 UG/L (MCL).
+What's the federal limit for Mercury in drinking water?
The federal MCL for Mercury is 2 UG/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Mercury?
A toxic metal from erosion of natural deposits and industrial runoff. Long-term exposure above the federal limit can damage the kidneys.
+Which other U.S. cities have Mercury over the federal limit?
2 of the 192 systems on The Water Map measuring Mercury report it at or above the federal limit. Examples include St Petersburg, FL, St George, UT.
+Where does this Mercury measurement come from?
This page reproduces the Mercury entry from the 2025 Consumer Confidence Report published by the Riverside, 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/riverside/2025/source.