Other
Mcaa in U.S. tap water
14 public water systems across 8 U.S. states report Mcaa in their annual Consumer Confidence Report. None currently sit at or above the federal limit.
Within the federal limit (3)
| Water system | Measured |
|---|---|
| Cincinnati, OH 2024 annual report | Not detected ug/L |
| Nashville, TN 2023 annual report | Not detected |
| Us Army Fort Irwin — Fort Irwin, Ca, CA 2023 annual report | Not detected ug/L |
Mcaa by state
Every state where a public water system reports Mcaa in its annual report, ranked by systems at or above the federal limit.
Frequently asked
+What is Mcaa?
Mcaa is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+What is the federal limit for Mcaa in drinking water?
The federal Public health goal for Mcaa is 70 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 Mcaa over the federal limit?
Zero of the 14 public water systems in The Water Map dataset currently report Mcaa at or above its federal limit.
+Which states report the most Mcaa in their drinking water?
No state currently has a system reporting Mcaa at or above its federal limit in The Water Map dataset. California, Ohio, Tennessee have the most systems measuring it.
+How can I check if Mcaa 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 Mcaa.