Physical & aggregate
Bicarbonate in U.S. tap water
15 public water systems across 6 U.S. states report Bicarbonate in their annual Consumer Confidence Report. None currently sit at or above the federal limit.
Frequently asked
+What is Bicarbonate?
Bicarbonate is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+Does Bicarbonate have a federal limit in drinking water?
Bicarbonate 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 Bicarbonate over the federal limit?
Zero of the 15 public water systems in The Water Map dataset currently report Bicarbonate at or above its federal limit.
+How can I check if Bicarbonate 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 Bicarbonate.