Disinfection byproducts
N-Nitrosodi-n-butylamine in U.S. tap water
9 public water systems across 1 U.S. states report N-Nitrosodi-n-butylamine in their annual Consumer Confidence Report. None currently sit at or above the federal limit.
Frequently asked
+What is N-Nitrosodi-n-butylamine?
N-Nitrosodi-n-butylamine is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+What is the federal limit for N-Nitrosodi-n-butylamine in drinking water?
The federal NL for N-Nitrosodi-n-butylamine is 50 ug/L. 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 N-Nitrosodi-n-butylamine over the federal limit?
Zero of the 9 public water systems in The Water Map dataset currently report N-Nitrosodi-n-butylamine at or above its federal limit.
+How can I check if N-Nitrosodi-n-butylamine 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 N-Nitrosodi-n-butylamine.
See N-Nitrosodi-n-butylamine on the map
Color-coded by status across the whole country.
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