Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Nitrite

Southern 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.

MORE ABOUT THIS CONTAMINANT

 

32

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
2014ND60ND
2015ND250ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019ND10ND

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
2014-06-30Q1424477004ND
2014-08-14Q1436466008ND
2014-08-26Q1439538030ND
2014-08-26Q1439538029ND
2014-10-02Q1450544036ND
2014-10-02Q1450544003ND
2015-01-22Q1502328029ND
2015-01-22Q1502328028ND
2015-01-22Q1502328027ND
2015-01-22Q1502328026ND
2015-01-22Q1502328025ND
2015-01-22Q1502328024ND
2015-01-22Q1502328023ND
2015-03-16Q1509639002ND
2015-04-02Q1512260041ND
2015-04-02Q1512260042ND
2015-04-02Q1512260040ND
2015-04-02Q1512260039ND
2015-04-02Q1512260038ND
2015-04-02Q1512260037ND
2015-04-02Q1512260036ND
2015-04-02Q1512260035ND
2015-04-02Q1512260034ND
2015-04-02Q1512260033ND
2015-04-30Q1515979029ND
2015-04-30Q1515979028ND
2015-04-30Q1515979027ND
2015-04-30Q1515979026ND
2015-04-30Q1515979025ND
2015-04-30Q1515979024ND
2015-04-30Q1515979023ND
2019-02-21Q1907660022ND