Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Nitrite

Great Oaks Water Company Inc.

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

 

50

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND30ND
2016ND180ND
2017ND70ND
2018ND30ND
2019ND160ND

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
2014-08-259590-022-1505ND
2014-08-259590-021-1545ND
2014-11-209590-021-1530ND
2015-06-249590-021-1340ND
2015-09-229590-013-1000ND
2015-12-289590-021-1450ND
2016-03-169590-021-1410ND
2016-05-259590-025-1415ND
2016-05-269590-021-1325ND
2016-08-229590-022-1025ND
2016-08-229590-021-1045ND
2016-08-229590-009-1410ND
2016-08-229590-011-1325ND
2016-08-229590-004-1230ND
2016-08-249590-023-1405ND
2016-08-249590-018-1315ND
2016-08-249590-015-1450ND
2016-08-249590-013-1230ND
2016-08-259590-019-1350ND
2016-08-259590-001-1205ND
2016-08-259590-002-1435ND
2016-08-259590-008-1255ND
2016-09-069590-007-1400ND
2016-11-029590-021-1050ND
2017-03-089590-021-1010ND
2017-04-139590-021-1120ND
2017-04-139590-006-1000ND
2017-06-019590-010-1030ND
2017-08-309590-021-1510ND
2017-10-199590-021-1500ND
2017-10-199590-022-1445ND
2018-08-309590-022-1000ND
2018-08-309590-023-1040ND
2018-08-309590-025-1020ND
2019-08-289590-006-0920ND
2019-08-289590-002-1030ND
2019-08-289590-001-1420ND
2019-08-289590-007-1120ND
2019-08-299590-008-1410ND
2019-08-299590-009-0745ND
2019-08-299590-018-1000ND
2019-08-299590-004-1310ND
2019-08-299590-015-0850ND
2019-09-059590-022-1215ND
2019-09-059590-019-1145ND
2019-09-059590-023-1400ND
2019-09-059590-025-1250ND
2019-09-129590-010-1145ND
2019-09-129590-011-1300ND
2019-09-129590-013-1430ND