Other
Mcaa in U.S. tap water
229 public water systems across 1 U.S. states report Mcaa in their annual Consumer Confidence Report. None currently sit at or above the federal limit.
Within the federal limit (174)
| Water system | Measured |
|---|---|
| Bakersfield, CA 2024 annual report | Not detected UG/L |
| Bakersfield, City of, CA 2026 annual report | Not detected UG/L |
| Brentwood, CA 2026 annual report | Not detected UG/L |
| Brentwood, CA 2023 annual report | Not detected UG/L |
| Brentwood, CA 2024 annual report | Not detected UG/L |
| Buena Vista Migrant Center, CA 2023 annual report | Not detected UG/L |
| Buena Vista Migrant Center, CA 2025 annual report | Not detected UG/L |
| Burbank, CA 2024 annual report | Not detected UG/L |
| Burbank-city, Water Dept., CA 2026 annual report | Not detected UG/L |
| Burbank-city, Water Dept., CA 2025 annual report | Not detected UG/L |
| Burbank-city, Water Dept., CA 2023 annual report | Not detected UG/L |
| Cal-water Service Co.-chico, CA 2025 annual report | Not detected UG/L |
| Cal-water Service Co.-chico, CA 2023 annual report | Not detected UG/L |
| Cal-water Service Co.-chico, CA 2026 annual report | Not detected UG/L |
| Chico, CA 2024 annual report | Not detected UG/L |
| Chula Vista Otay, CA 2024 annual report | Not detected UG/L |
| City of Antioch, CA 2026 annual report | Not detected UG/L |
| City of Antioch, CA 2023 annual report | Not detected UG/L |
| City of Antioch, CA 2025 annual report | Not detected UG/L |
| City of Clovis, CA 2023 annual report | Not detected UG/L |
| City of Clovis, CA 2026 annual report | Not detected UG/L |
| City of Daly City, CA 2026 annual report | Not detected UG/L |
| City of Fairfield, CA 2026 annual report | Not detected UG/L |
| City of Fullerton, CA 2025 annual report | Not detected UG/L |
| City of Hayward, CA 2025 annual report | Not detected UG/L |
| City of Hayward, CA 2026 annual report | Not detected UG/L |
| City of Hemet, CA 2024 annual report | Not detected UG/L |
| City of Huntington Beach, CA 2024 annual report | Not detected UG/L |
| City of Huntington Beach, CA 2023 annual report | Not detected UG/L |
| City of Huntington Beach, CA 2026 annual report | Not detected UG/L |
| City of Martinez, CA 2026 annual report | Not detected UG/L |
| City of Martinez, CA 2025 annual report | Not detected UG/L |
| City of Martinez, CA 2024 annual report | Not detected UG/L |
| City of Martinez, CA 2023 annual report | Not detected UG/L |
| City of Murrieta, CA 2024 annual report | Not detected UG/L |
| City of Pittsburg, CA 2025 annual report | Not detected UG/L |
| City of Pittsburg, CA 2024 annual report | Not detected UG/L |
| City of Pittsburg, CA 2026 annual report | Not detected UG/L |
| City of San Jacinto, CA 2024 annual report | Not detected UG/L |
| City of San Jose - Evg/edv/coy, CA 2023 annual report | Not detected UG/L |
| City of San Jose - Evg/edv/coy, CA 2025 annual report | Not detected UG/L |
| City of San Jose - Evg/edv/coy, CA 2026 annual report | Not detected UG/L |
| City of Santa Ana, CA 2026 annual report | Not detected UG/L |
| City of Santa Ana, CA 2025 annual report | Not detected UG/L |
| City of Santa Ana, CA 2023 annual report | Not detected UG/L |
| City of Stockton, CA 2026 annual report | Not detected UG/L |
| City of Sunnyvale, CA 2023 annual report | Not detected UG/L |
| City of Thousand Oaks Water Department, CA 2026 annual report | Not detected UG/L |
| City of Thousand Oaks Water Department, CA 2025 annual report | Not detected UG/L |
| City of Thousand Oaks Water Department, CA 2023 annual report | Not detected UG/L |
Showing 50 of 174. The full list is in the JSON API.
Frequently asked
+What is Mcaa?
Mcaa is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+Does Mcaa have a federal limit in drinking water?
Mcaa 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 Mcaa over the federal limit?
Zero of the 229 public water systems in The Water Map dataset currently report Mcaa at or above its federal limit.
+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.