Other
Tcaa in U.S. tap water
5 public water systems across 2 U.S. states report Tcaa in their annual Consumer Confidence Report. None currently sit at or above the federal limit.
Frequently asked
+What is Tcaa?
Tcaa is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+Does Tcaa have a federal limit in drinking water?
Tcaa does not have an enforceable federal MCL. Utilities still report any measured levels in their annual Consumer Confidence Report.
+How many U.S. water systems have Tcaa over the federal limit?
Zero of the 5 public water systems in The Water Map dataset currently report Tcaa at or above its federal limit.
+How can I check if Tcaa 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 Tcaa.