Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Nitrite

Oswego

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.

 

64

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
2014ND160ND
20150.00125 ppm161ND - 0.0200 ppm
2016ND150ND
2017ND80ND
20180.00838 ppm81ND - 0.0670 ppm
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
2014-07-101407683-001AND
2014-07-101407683-001BND
2014-07-101407683-007AND
2014-07-101407683-007BND
2014-07-101407683-006BND
2014-07-101407683-006AND
2014-07-101407683-005BND
2014-07-101407683-005AND
2014-07-101407683-004AND
2014-07-101407683-003BND
2014-07-101407683-003AND
2014-07-101407683-002AND
2014-07-101407683-002BND
2014-07-101407683-004BND
2014-11-041411159-001AND
2014-11-041411159-001BND
2015-08-051508371-005AND
2015-08-051508371-002AND
2015-08-051508371-002BND
2015-08-051508371-001BND
2015-08-051508371-001AND
2015-08-051508371-007AND
2015-08-051508371-007BND
2015-08-051508371-006BND
2015-08-051508371-006AND
2015-08-051508371-005BND
2015-08-051508371-004BND
2015-08-051508371-004A0.0200 ppm
2015-08-051508371-003AND
2015-08-051508371-003BND
2015-10-071510507-001AND
2015-10-071510507-001BND
2016-04-061604459-001AND
2016-07-121607838-003BND
2016-07-121607834-001AND
2016-07-121607834-001BND
2016-07-121607838-005AND
2016-07-121607838-005BND
2016-07-121607838-004AND
2016-07-121607838-004BND
2016-07-121607834-002BND
2016-07-121607838-003AND
2016-07-121607834-002AND
2016-07-121607838-002AND
2016-07-121607838-002BND
2016-07-121607838-001AND
2016-07-121607838-001BND
2017-08-251708N41-005AND
2017-08-251708N41-006AND
2017-08-251708N41-007AND
2017-08-251708N41-004AND
2017-08-251708N41-003AND
2017-08-251708N41-002AND
2017-08-251708N41-001AND
2017-10-041710320-001AND
2018-08-061808393-001AND
2018-08-061808393-002A0.0670 ppm
2018-08-061808393-003AND
2018-08-061808393-004AND
2018-08-061808393-005AND
2018-08-061808393-006AND
2018-08-061808393-007AND
2018-11-061811365-001AND
2019-04-091904718-001AND