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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Ottawa County Regional Water District

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

 

71

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
2014ND120ND
2015ND120ND
2016ND120ND
2017ND130ND
20180.00833 ppm121ND - 0.1000 ppm
2019ND100ND

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
2014-01-08AG62312ND
2014-02-06AG64103ND
2014-03-11AG66255ND
2014-04-08AG68132ND
2014-05-06AG70039ND
2014-06-10AG72907ND
2014-07-08AG75028ND
2014-08-05AG77078ND
2014-09-09AG80168ND
2014-10-08AG82476ND
2014-11-05AG84390ND
2014-12-10AG87092ND
2015-01-07AG88641ND
2015-02-04AG90149ND
2015-03-11AG92352ND
2015-04-08AG94043ND
2015-05-06AG95838ND
2015-06-10AG98618ND
2015-07-08AH00655ND
2015-08-04AH02693ND
2015-09-09AH05505ND
2015-10-07AH07428ND
2015-11-04AH09326ND
2015-12-09AH11767ND
2016-01-06AH13101ND
2016-02-03AH14719ND
2016-03-09AH17010ND
2016-04-06AH18795ND
2016-05-04AH20809ND
2016-06-08AH23359ND
2016-07-06AH25291ND
2016-08-03AH27383ND
2016-09-07AH30101ND
2016-10-05AH32784ND
2016-11-02AH34982ND
2016-12-07AH37624ND
2017-01-04AH39730ND
2017-02-08AH42673ND
2017-03-08AH44700ND
2017-04-05AH46495ND
2017-05-03AH48831ND
2017-05-10AH49405ND
2017-06-07AH51421ND
2017-07-05AH53794ND
2017-08-02AH56157ND
2017-09-06AH59055ND
2017-10-04AH61401ND
2017-11-08AH63874ND
2017-12-06AH65856ND
2018-01-10AH678910.1000 ppm
2018-02-07AH69559ND
2018-03-07AH71491ND
2018-04-04AH73427ND
2018-05-02AH75415ND
2018-06-06AH77742ND
2018-07-11AH80410ND
2018-08-08AH82598ND
2018-09-12AH85381ND
2018-10-03AH87229ND
2018-11-07AH89709ND
2018-12-05AH91537ND
2019-01-09AH93766ND
2019-02-06AH95428ND
2019-03-06AH97222ND
2019-04-03AH99281ND
2019-05-08AI01790ND
2019-06-05AI03697ND
2019-07-03AI06067ND
2019-08-07AI08468ND
2019-09-04AI10667ND
2019-10-02AI12943ND