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Hexachlorobenzene in U.S. tap water
23 public water systems across 4 U.S. states report Hexachlorobenzene 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 |
|---|---|---|
| Delano, City of — Delano, Ca, CA 2023 annual report | 1 ug/L | 1.0× the limit |
Within the federal limit (22)
Frequently asked
+What is Hexachlorobenzene?
Hexachlorobenzene is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+What is the federal limit for Hexachlorobenzene in drinking water?
The federal MCLG for Hexachlorobenzene 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 Hexachlorobenzene over the federal limit?
1 of the 23 public water systems on The Water Map report Hexachlorobenzene at or above its federal limit, spanning 4 U.S. states. The full list is on this page.
+How can I check if Hexachlorobenzene 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 Hexachlorobenzene.