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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

Johnson Utilities

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND10ND
2014N/A00N/A
2015ND60ND
2016ND10ND
2017ND140ND

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
2012-01-23201201240126IND
2013-12-203121839-01ND
2015-03-04201503040389IND
2015-03-04201503040388IND
2015-03-04201503040387IND
2015-06-17201506170544IND
2015-10-15201510150154IND
2015-11-065110675-01ND
2016-11-216111940-01ND
2017-02-237022091-01ND
2017-03-147031371-01ND
2017-03-147031371-02ND
2017-05-027050461-03ND
2017-05-027050461-02ND
2017-05-027050461-01ND
2017-06-287062703-11ND
2017-07-31708119-04ND
2017-07-317080119-05ND
2017-07-317080119-01ND
2017-10-127101391-02ND
2017-10-127101391-01ND
2017-12-217122131-03ND
2017-12-217122131-03ND