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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.
Tcaa by state
Every state where a public water system reports Tcaa in its annual report, ranked by systems at or above the federal limit.
| State | Measuring | Over limit | Highest reading |
|---|---|---|---|
| California | 4 | 0 | 3.18 ug/L · City of Anaheim — Anaheim, Ca, CA |
| Connecticut | 1 | 0 | 4.5–22.4 ug/L · Hamden, CT |
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.
+Which states report the most Tcaa in their drinking water?
No state currently has a system reporting Tcaa at or above its federal limit in The Water Map dataset. California, Connecticut have the most systems measuring it.
+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.