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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Meadow 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

 

91

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND90ND
2015ND140ND
2016ND220ND
2017ND160ND
2018ND150ND
2019ND150ND

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
2014-04-23S479132ND
2014-04-25S479220ND
2014-06-30S504512ND
2014-07-24S563191ND
2014-08-21S570905ND
2014-09-18S573337ND
2014-10-24S573406ND
2014-11-12S589308ND
2014-12-08S589354ND
2015-01-15S504596ND
2015-01-15S504597ND
2015-01-22S602984ND
2015-01-22S588751ND
2015-02-23S603063ND
2015-03-19S607816ND
2015-04-22S607841ND
2015-05-11S616622ND
2015-06-10S619991ND
2015-07-16S640157ND
2015-08-19S640282ND
2015-09-08S602033ND
2015-11-04S629150ND
2015-12-08S643150ND
2016-01-04S643212ND
2016-02-11S643250ND
2016-02-11S614585ND
2016-02-11S602101ND
2016-02-11S602100ND
2016-03-01S659771ND
2016-04-14S640102ND
2016-05-10S659897ND
2016-06-15S659881ND
2016-06-23S686271ND
2016-07-13S686694ND
2016-07-19S671633ND
2016-08-16S671644ND
2016-08-29S709847ND
2016-09-22S679623ND
2016-09-26S693807ND
2016-10-18S679626ND
2016-10-20S694508ND
2016-11-08S679632ND
2016-11-21S694583ND
2016-12-12S679634ND
2016-12-27S714523ND
2017-01-18S719992ND
2017-01-25S670509ND
2017-02-07S679738ND
2017-02-21S628886ND
2017-02-21S628884ND
2017-02-21S614676ND
2017-03-08S679742ND
2017-04-19S659833ND
2017-05-10S659838ND
2017-06-26S659839ND
2017-07-13S733928ND
2017-08-03S659952ND
2017-09-13S671525ND
2017-10-18S670312ND
2017-11-15S757674ND
2017-12-13S757677ND
2018-01-22S671533ND
2018-02-20S659864ND
2018-03-22S734011ND
2018-04-16S757682ND
2018-05-17S659917ND
2018-06-20S757687ND
2018-07-19S734024ND
2018-07-23S811982ND
2018-07-23S811981ND
2018-07-23S811980ND
2018-08-03S759491ND
2018-09-21S759493ND
2018-10-30S812558ND
2018-11-30S759596ND
2018-12-11S817051ND
2019-01-22S759677ND
2019-01-30S817117ND
2019-01-30S817116ND
2019-01-30S817118ND
2019-02-19S824251ND
2019-03-07S824252ND
2019-04-03S759685ND
2019-05-16S759702ND
2019-06-12S759287ND
2019-07-29S757553ND
2019-08-01S759732ND
2019-09-11S759707ND
2019-10-08S757559ND
2019-11-18S811862ND
2019-12-10S811864ND