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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

Del-Co Water Company Inc.

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.

 

161

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND280ND
2013ND280ND
2014ND280ND
2015ND260ND
2016ND260ND
2017ND250ND

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
2012-01-109300108209ND
2012-01-119300108208ND
2012-02-079300108458ND
2012-02-089300108457ND
2012-03-139300113885ND
2012-03-149300121338ND
2012-04-109300005500ND
2012-04-119300005499ND
2012-05-099300011260ND
2012-05-099300013364ND
2012-06-129300080399ND
2012-06-139300020183ND
2012-06-139300034315ND
2012-07-109300020254ND
2012-07-109300020255ND
2012-07-119300035760ND
2012-08-079300028907ND
2012-08-079300028908ND
2012-08-089300028906ND
2012-09-119300044712ND
2012-09-119300044713ND
2012-09-129300044711ND
2012-10-099300044445ND
2012-10-109300044444ND
2012-11-139300034445ND
2012-11-149300034444ND
2012-12-119300053277ND
2012-12-129300053276ND
2013-01-089300065990ND
2013-01-099300065989ND
2013-02-129300055962ND
2013-02-139300055961ND
2013-03-129300048979ND
2013-03-139300048978ND
2013-04-109300100551ND
2013-04-109300100552ND
2013-05-079300060124ND
2013-05-089300010798ND
2013-06-119300060125ND
2013-06-119300100614ND
2013-06-129300097892ND
2013-07-109300116140ND
2013-07-169300116141ND
2013-07-169300116142ND
2013-08-13A130003670ND
2013-08-13A130003671ND
2013-08-14A130108425ND
2013-09-10A130133445ND
2013-09-10A130133446ND
2013-09-11A130133444ND
2013-10-08A130141067ND
2013-10-09A130141066ND
2013-11-12A130147961ND
2013-11-13A130010799ND
2013-12-10A130158216ND
2013-12-11A130158209ND
2014-01-07A140158474ND
2014-01-08A140158475ND
2014-02-11A140161388ND
2014-02-12A140010797ND
2014-03-12A140141068ND
2014-03-12A140180688ND
2014-04-08A140183791ND
2014-04-09A140183790ND
2014-05-13A140080400ND
2014-05-13A140194984ND
2014-05-14A140161389ND
2014-06-10A140044446ND
2014-06-10A140112282ND
2014-06-11A140194985ND
2014-07-08A140209596ND
2014-07-08A140209597ND
2014-07-09A140209598ND
2014-08-12A140202071ND
2014-08-13A140202065ND
2014-08-13A140202070ND
2014-09-09A140136393ND
2014-09-10A140136392ND
2014-10-07A140213230ND
2014-10-08A140116106ND
2014-11-11A140242916ND
2014-11-12A140242917ND
2014-12-09A140242973ND
2014-12-10A140242974ND
2015-01-13A150257668ND
2015-01-14A150258977ND
2015-02-11A150270048ND
2015-02-11A150270049ND
2015-03-10A150273683ND
2015-03-11A150273682ND
2015-04-07A150282132ND
2015-04-08A150278333ND
2015-05-13A150282357ND
2015-05-13A150291635ND
2015-06-09A150294232ND
2015-06-10A150294231ND
2015-07-07A150201738ND
2015-07-07A150303708ND
2015-07-15A150303710ND
2015-08-11A150318584ND
2015-08-11A150318585ND
2015-08-12A150291636ND
2015-09-08A150218003ND
2015-09-09A150243117ND
2015-10-13A150334532ND
2015-10-14A150334531ND
2015-11-10A150206955ND
2015-11-11A150335169ND
2015-12-08A150345371ND
2015-12-09A150345370ND
2016-01-13A160345354ND
2016-01-13A160345506ND
2016-02-09A160357877ND
2016-02-11A160368550ND
2016-03-09A160353582ND
2016-03-09A160368549ND
2016-04-12A160363839ND
2016-04-13A160363838ND
2016-05-10A160381008ND
2016-05-11A160381041ND
2016-06-07A160239056ND
2016-06-07A160399878ND
2016-06-08A160399877ND
2016-07-12A160409592ND
2016-07-13A160409591ND
2016-08-09A160420978ND
2016-08-10A160420977ND
2016-09-1216-24982-01ND
2016-09-13A160048610ND
2016-09-14A160048608ND
2016-10-11A160438590ND
2016-10-12A160438447ND
2016-11-08A160345421ND
2016-11-09A160291637ND
2016-12-13A160444589ND
2016-12-14A160444590ND
2017-01-10A170462954ND
2017-01-11A170462953ND
2017-02-07A170469457ND
2017-02-08A170469458ND
2017-03-07A170471247ND
2017-03-08A170291638ND
2017-04-11A170480888ND
2017-04-12A170291639ND
2017-05-09A170490684ND
2017-05-10A170490683ND
2017-06-13A170497476ND
2017-06-14A170497475ND
2017-07-11A170503993ND
2017-07-12A170503992ND
2017-08-0717-24619-01ND
2017-08-09A170516201ND
2017-08-09A170420979ND
2017-09-13A170527885ND
2017-09-13A170528169ND
2017-10-10A170534857ND
2017-10-11A170534856ND
2017-11-07A170545845ND
2017-11-08A170545735ND
2017-12-12A170554750ND
2017-12-13A170554749ND