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Deha in U.S. tap water
22 public water systems across 5 U.S. states report Deha in their annual Consumer Confidence Report. None currently sit at or above the federal limit.
Within the federal limit (22)
Deha by state
Every state where a public water system reports Deha in its annual report, ranked by systems at or above the federal limit.
Frequently asked
+What is Deha?
Deha is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+Does Deha have a federal limit in drinking water?
Deha 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 Deha over the federal limit?
Zero of the 22 public water systems in The Water Map dataset currently report Deha at or above its federal limit.
+Which states report the most Deha in their drinking water?
No state currently has a system reporting Deha at or above its federal limit in The Water Map dataset. California, Texas, North Carolina have the most systems measuring it.
+How can I check if Deha 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 Deha.