Inorganic chemicals
Chloride in U.S. tap water
306 public water systems across 24 U.S. states report Chloride in their annual Consumer Confidence Report. None currently sit at or above the federal limit.
What it is
A naturally occurring salt compound.
Why it's regulated
Regulated only as a secondary (cosmetic) standard; high levels cause a salty taste and can corrode pipes.
Frequently asked
+What is Chloride?
A naturally occurring salt compound. Regulated only as a secondary (cosmetic) standard; high levels cause a salty taste and can corrode pipes.
+Does Chloride have a federal limit in drinking water?
Chloride 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 Chloride over the federal limit?
Zero of the 306 public water systems in The Water Map dataset currently report Chloride at or above its federal limit.
+How can I check if Chloride 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 Chloride.