Physical & aggregate
Odor in U.S. tap water
215 public water systems across 6 U.S. states report Odor in their annual Consumer Confidence Report. None currently sit at or above the federal limit.
What it is
A measure of detectable smell in the water.
Why it's regulated
Regulated only as a secondary (cosmetic) standard.
Within the federal limit (17)
Frequently asked
+What is Odor?
A measure of detectable smell in the water. Regulated only as a secondary (cosmetic) standard.
+Does Odor have a federal limit in drinking water?
Odor 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 Odor over the federal limit?
Zero of the 215 public water systems in The Water Map dataset currently report Odor at or above its federal limit.
+How can I check if Odor 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 Odor.