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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

City of Newport Beach

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.

 

51

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND110ND
2013ND100ND
2014ND80ND
2015ND100ND
2016ND70ND
2017ND50ND

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
2012-02-234417-004-0800ND
2012-03-274417-005-0850ND
2012-05-174417-002-0830ND
2012-05-174417-005-0915ND
2012-05-244417-004-0930ND
2012-05-244417-003-0900ND
2012-08-224417-004-0710ND
2012-08-224417-005-0650ND
2012-10-304417-004-0915ND
2012-10-304417-003-0950ND
2012-10-304417-005-0930ND
2013-03-194417-004-0740ND
2013-03-204417-005-0735ND
2013-05-284417-003-1300ND
2013-05-284417-004-1230ND
2013-05-294417-005-1140ND
2013-05-304417-002-0815ND
2013-08-124417-004-1015ND
2013-08-124417-005-1000ND
2013-11-194417-004-0845ND
2013-11-194417-005-0905ND
2014-03-034417-004-0810ND
2014-03-034417-005-0830ND
2014-06-184417-003-1245ND
2014-06-184417-005-1220ND
2014-06-184417-004-1230ND
2014-06-184417-002-1300ND
2014-08-214417-004-0910ND
2014-08-214417-005-0925ND
2015-03-024417-005-0835ND
2015-03-024417-004-0815ND
2015-05-044417-004-1025ND
2015-05-044417-002-1050ND
2015-05-044417-005-1010ND
2015-05-044417-003-1115ND
2015-08-114417-002-0945ND
2015-08-114417-003-0920ND
2015-08-114417-004-0840ND
2015-08-114417-005-0825ND
2016-02-294417-005-0805ND
2016-02-294417-004-1045ND
2016-05-094417-002-0840ND
2016-05-094417-003-0850ND
2016-06-164417-004-1115ND
2016-06-164417-004-1100ND
2016-11-014417-005-0835ND
2017-02-094417-004-0950ND
2017-02-094417-005-0930ND
2017-05-034417-003-1220ND
2017-05-034417-002-1235ND
2017-05-034417-005-1145ND