Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Nitrite

Waukesha Water Utility

Nitrite, closely related to the fertilizer chemical nitrate, comes from urban runoff and from fertilizer applied to agricultural lands to pollute drinking water. Nitrite is significantly more toxic than nitrate. Excessive nitrite in water can cause oxygen deprivation in infants and increase the risk of cancer.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND70ND
2015ND20ND
2016N/A00N/A
2017ND70ND

ppm = parts per million

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 1 ppm

The legal limit for nitrite, established in 1991, was based on the rate of conversion of ingested nitrate into nitrite in adults. This limit may not fully protect against the risk of cancer due to nitrite exposure.

ppm = parts per million

All test results

Date Lab ID Result
2014-03-26776756ND
2014-03-26776754ND
2014-05-07784420ND
2014-05-07784423ND
2014-05-07784426ND
2014-06-11796104ND
2014-06-11796101ND
2015-03-11847854ND
2015-09-29886381ND
2017-03-28980079ND
2017-03-28980085ND
2017-03-28980082ND
2017-05-02986362ND
2017-05-02986365ND
2017-05-31994538ND
2017-05-31994541ND