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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Hazardville Water Company

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.

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78

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND120ND
20160.00421 ppm141ND - 0.0590 ppm
2017ND120ND
2018ND120ND
2019ND120ND

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
2014-01-27SB83819-05-NOXND
2014-02-04SB84209-01-NOXND
2014-02-04SB84209-02-NOXND
2014-03-06SB85565-01-NOXND
2014-03-06SB85565-04-NOXND
2014-03-06SB85565-03-NOXND
2014-03-06SB85565-02-NOXND
2014-04-07SB87145-02-NOXND
2014-04-07SB87145-04-NOXND
2014-04-07SB87145-05-NOXND
2014-07-21SB93129-02-NOXND
2014-07-21SB93129-09-NOXND
2014-07-21SB93129-10-NOXND
2014-10-01SB97293-06-NOXND
2014-10-01SB97293-09-NOXND
2014-10-01SB97293-10-NOXND
2015-02-04SC02993-10-NOXND
2015-02-11SC03254-02-NOXND
2015-04-21SC06241-06-NOXND
2015-04-21SC06241-02-NOXND
2015-04-21SC06241-07-NOXND
2015-04-21SC06241-01-NOXND
2015-04-21SC06241-03-NOXND
2015-04-21SC06241-05-NOXND
2015-07-15SC10036-06-NOXND
2015-07-15SC10036-02-NOXND
2015-10-20SC13895-06-NOXND
2015-11-09SC14743-02-NOXND
2016-02-01SC17724-17RE1-NOND
2016-02-01SC17724-15RE1-NOND
2016-02-01SC17724-15-NOXND
2016-02-01SC17724-17-NOXND
2016-04-11SC19990-12-NOXND
2016-04-11SC19990-02-NOXND
2016-07-18SC23747-14-NOXND
2016-07-18SC23747-11-NOXND
2016-07-18SC23747-12-NOXND
2016-07-21SC23917-02-NOX0.0590 ppm
2016-07-21SC23917-03-NOXND
2016-07-21SC23917-01-NOXND
2016-10-17SC27152-17-NOXND
2016-10-17SC27152-16-NOXND
2017-01-09SC30330-13-NOXND
2017-01-09SC30330-02-NOXND
2017-04-04BX98285NOXND
2017-04-25BY09574NOXND
2017-06-26BY48753NOXND
2017-06-27BY48754NOXND
2017-06-27BY48749NOXND
2017-06-27BY48751NOXND
2017-08-22BY88562NOXND
2017-08-28BY92079NOXND
2017-10-17BZ22378NOXND
2017-10-17BZ22376NOXND
2018-01-03BZ68302NOXND
2018-01-23BZ78632NOXND
2018-04-03CA12984NOXND
2018-04-10CA17550NOXND
2018-07-02CA82194ND
2018-07-02CA82195ND
2018-07-02CA82196ND
2018-07-02CA82192ND
2018-07-02CA82197ND
2018-07-16CA92078ND
2018-10-10CB69244ND
2018-10-23CB80397ND
2019-01-08CC25225ND
2019-01-15CC29010ND
2019-04-02CC79784ND
2019-04-16CC95603ND
2019-07-09CD52639ND
2019-07-09CD52637ND
2019-07-09CD52630ND
2019-07-09CD52629ND
2019-07-09CD52638ND
2019-07-09CD52640ND
2019-10-07CE28923ND
2019-12-11CE86389ND