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National Drinking Water Database

N-nitrosopyrrolidine (npyr) in Illinois

N-nitrosopyrrolidine is a synthetic chemical with limited research use; it is classified as possibly carcinogenic to humans.

The Most Polluted Communities in Illinois

3 water utilities reported detecting N-nitrosopyrrolidine (npyr) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average N-nitrosopyrrolidine (npyr) level

RankSystem Population Served Positive test results of total reported tests Average Level
1IL American-East ST Louis
Creve Coeur, IL
155,3821 of 10.01 ppb
(0.01 ppb)
Decatur, IL
81,8601 of 1< 0.01 ppb
(< .01 to 0.0066 ppb)
3IL American-Champaign
Creve Coeur, IL
141,0001 of 1< 0.01 ppb
(< .01 to 0.0036 ppb)

Health Based Limits for N-nitrosopyrrolidine (npyr)

There are no health based standards that EWG is using for this chemical

Violation Summary for N-nitrosopyrrolidine (npyr) in Illinois

There are no violations reported for this contaminant in Illinois