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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Meriden Water Division

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

 

58

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
2014ND80ND
2015ND80ND
2016ND70ND
2017ND70ND
20180.000867 ppm151ND - 0.0130 ppm
20190.000769 ppm131ND - 0.01000 ppm

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
2014-01-02BF94398NOXND
2014-07-10BG72730NOXND
2014-07-10BG72736NOXND
2014-07-10BG72735NOXND
2014-07-10BG72734NOXND
2014-07-10BG72732NOXND
2014-07-10BG72731NOXND
2014-07-10BG72733NOXND
2015-06-18BJ33375NOXND
2015-06-18BJ33376NOXND
2015-06-18BJ33377NOXND
2015-06-18BJ33378NOXND
2015-06-18BJ33379NOXND
2015-06-18BJ33380NOXND
2015-06-18BJ33381NOXND
2015-11-19BK25835NOXND
2016-06-30BN65089NOXND
2016-06-30BN65093NOXND
2016-06-30BN65092NOXND
2016-06-30BN65091NOXND
2016-06-30BN65090NOXND
2016-06-30BN65088NOXND
2016-07-14BN73019NOXND
2017-06-15BY40610NOXND
2017-06-15BY40611NOXND
2017-06-15BY40612NOXND
2017-06-15BY40613NOXND
2017-06-22BY44703NOXND
2017-06-29BY50178NOXND
2017-08-17BY86088NOXND
2018-07-19CA94411ND
2018-07-19CA94412ND
2018-07-19CA94413ND
2018-07-19CA94410ND
2018-07-26CA98719ND
2018-07-26CA98740ND
2018-07-26CA98735ND
2018-07-26CA98736ND
2018-07-26CA98737ND
2018-07-26CA98738ND
2018-07-26CA987390.0130 ppm
2018-08-23CB17441ND
2018-08-23CB17437ND
2018-09-20CB35507ND
2018-09-27CB59877ND
2019-06-19CD38010ND
2019-06-19CD38011ND
2019-06-19CD38012ND
2019-06-24CD40812ND
2019-06-26CD42474ND
2019-06-26CD42475ND
2019-06-26CD42476ND
2019-06-26CD42473ND
2019-06-26CD424710.01000 ppm
2019-06-26CD42472ND
2019-07-03CD50737ND
2019-07-03CD50736ND
2019-07-31CD69099ND