Inorganic chemicals
Asbestos in U.S. tap water
53 public water systems across 7 U.S. states report Asbestos 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 |
|---|---|---|
| California Water Service Co-leona Valley — San Jose, Ca, CA 2020 annual report | 9.5 MFL | 1.4× the limit |
Within the federal limit (52)
Showing 50 of 52. The full list is in the JSON API.
Asbestos by state
Every state where a public water system reports Asbestos in its annual report, ranked by systems at or above the federal limit.
Frequently asked
+What is Asbestos?
Asbestos is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+What is the federal limit for Asbestos in drinking water?
The federal MCL for Asbestos is 7 . 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 Asbestos over the federal limit?
1 of the 53 public water systems on The Water Map report Asbestos at or above its federal limit, spanning 7 U.S. states. The full list is on this page.
+Which states report the most Asbestos in their drinking water?
Of the systems on The Water Map, California (1 system at or above the limit) report the most Asbestos exceedances. The state-by-state table on this page lists every state.
+How can I check if Asbestos 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 Asbestos.