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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Charlotte Water

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.

MORE ABOUT THIS CONTAMINANT

 

90

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND200ND
2015ND200ND
2016ND200ND
2017ND200ND
2018ND50ND
2019ND50ND

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
2014-02-19AE92461-NND
2014-02-19AE92462-NND
2014-02-19AE92463-NND
2014-02-19AE92464-NND
2014-02-19AE92460-NND
2014-05-13AF01539-NND
2014-05-13AF01537-NND
2014-05-13AF01536-NND
2014-05-13AF01535-NND
2014-05-13AF01538-NND
2014-08-07AF10206-NND
2014-08-07AF10205-NND
2014-08-07AF10207-NND
2014-08-07AF10204-NND
2014-08-07AF10203-NND
2014-12-03AF22248-NND
2014-12-03AF22249-NND
2014-12-03AF22245-NND
2014-12-03AF22250-NND
2014-12-03AF22251-NND
2015-03-04ND
2015-03-04ND
2015-03-04ND
2015-03-04ND
2015-03-04ND
2015-06-11ND
2015-06-11ND
2015-06-11ND
2015-06-24ND
2015-06-24ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-11-04ND
2015-11-04ND
2015-11-04ND
2015-11-04ND
2015-11-04ND
2016-02-03AF65970_NND
2016-02-03AF65969_NND
2016-02-03AF65972_NND
2016-02-03AF65968_NND
2016-02-03AF65971_NND
2016-05-04AF76709_NND
2016-05-04AF76703_NND
2016-05-04AF76708_NND
2016-05-04AF76704_NND
2016-05-04AF76707_NND
2016-08-03AF87888_NO2NO3ND
2016-08-03AF87872_NO2NO3ND
2016-08-03AF87877_NO2NO3ND
2016-08-03AF87874_NO2NO3ND
2016-08-03AF87876_NO2NO3ND
2016-11-02AF98936_NND
2016-11-02AF98939_NND
2016-11-02AF98938_NND
2016-11-02AF98935_NND
2016-11-02AF98937_NND
2017-02-01AG08740_NND
2017-02-01AG08742_NND
2017-02-01AG08739_NND
2017-02-01AG08738_NND
2017-02-01AG08741_NND
2017-05-04AG19796_NND
2017-05-04AG19792_NND
2017-05-04AG19793_NND
2017-05-08AG20108_NND
2017-05-08AG20107_NND
2017-08-01AG30317_NND
2017-08-01AG30319_NND
2017-08-01AG30321_NND
2017-08-01AG30318_NND
2017-08-01AG30320_NND
2017-11-01AG41977_NND
2017-11-01AG41979_NND
2017-11-01AG41980_NND
2017-11-01AG41978_NND
2017-11-01AG41981_NND
2018-02-08AG43375_N ND
2018-02-08AG53373_N ND
2018-02-08AG53374_N ND
2018-02-08AG53376_N ND
2018-02-08AG53379_N ND
2019-02-07AG96876_N ND
2019-02-07AG96877_N ND
2019-02-07AG96880_N ND
2019-02-07AG96881_N ND
2019-02-07AG96882_N ND