VOCs & pesticides
Benzene in U.S. tap water
45 public water systems across 8 U.S. states report Benzene in their annual Consumer Confidence Report. 1 sit at or above the federal limit.
At or above the federal limit (1)
| Water system | Measured | vs. limit |
|---|---|---|
| Mendota, City of — Mendota, Ca, CA 2023 annual report | 82–130 ug/L | 26.0× the limit |
Within the federal limit (42)
Benzene by state
Every state where a public water system reports Benzene in its annual report, ranked by systems at or above the federal limit.
Frequently asked
+What is Benzene?
Benzene is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+What is the federal limit for Benzene in drinking water?
The federal MCLG for Benzene is 0 ug/L. The EPA enforces this against the regulated reporting statistic (typically a running annual average or 90th percentile), not a single-sample spike.
+How many U.S. water systems have Benzene over the federal limit?
1 of the 45 public water systems on The Water Map report Benzene at or above its federal limit, spanning 8 U.S. states. The full list is on this page.
+Which states report the most Benzene in their drinking water?
Of the systems on The Water Map, California (1 system at or above the limit) report the most Benzene exceedances. The state-by-state table on this page lists every state.
+How can I check if Benzene is in my city's tap water?
Search your city on The Water Map (https://www.thewatermap.com/) or browse the list on this page. Every U.S. public water utility is required to publish an annual Consumer Confidence Report that lists every contaminant it measured, including Benzene.