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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Carle Place 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

 

113

Samples

1

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
20160.700 ppm71ND - 4.90 ppm
2017ND370ND
2018ND330ND
2019ND280ND

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
2014-02-211402B04-001-PRIND
2014-02-251402C87-002-PRIND
2014-03-051403202-002-PRIND
2014-03-111403673-002-PRIND
2015-04-071504384-001-PRIND
2015-04-141504956-003-PRIND
2015-04-211504F41-001-PRIND
2015-05-261505H79-001-PRIND
2016-04-121604A71-003-PRIND
2016-10-187022600034.90 ppm
2016-10-25702831004ND
2016-11-09704078001-POCSND
2016-11-15704511002ND
2016-12-06706057001ND
2016-12-20707261001ND
2017-01-03708099001ND
2017-01-10708686002ND
2017-01-17709190001ND
2017-02-077010705001ND
2017-02-147011216001ND
2017-02-217011678002ND
2017-02-217011678001ND
2017-03-077012741001ND
2017-03-137013273001ND
2017-03-217013753001ND
2017-04-047014819003-PRIND
2017-04-117015451002-PRIND
2017-04-187016159003-PRIND
2017-05-027017414001ND
2017-05-097018088001ND
2017-05-157018586001ND
2017-06-067020417002-POCSND
2017-06-137021172001-POCSND
2017-06-20702837001-POCSND
2017-07-037023031002ND
2017-07-107023518003ND
2017-07-187024465001ND
2017-08-017025766002ND
2017-08-087026448001ND
2017-08-157027184001ND
2017-09-057028825001-POCSND
2017-09-127029624001-POCSND
2017-09-197030352001-POCSND
2017-10-037031683001ND
2017-10-107032362001-POCSND
2017-10-177033087001-POCSND
2017-11-087035129001-POCSND
2017-11-147035629001ND
2017-11-217036261001-POCSND
2017-12-057037196001-POCSND
2017-12-127037873001-POCSND
2017-12-197038520002ND
2018-01-027039420002POCSND
2018-01-097039886001-POCSND
2018-01-237041060003ND
2018-02-067042084001-POCSND
2018-02-137042736001-POCSND
2018-02-207043349001-POCSND
2018-03-067044522001-POCSND
2018-03-137045138002ND
2018-04-037046962001ND
2018-04-107047800001ND
2018-04-177048611001ND
2018-05-017050010001-POCSND
2018-05-087050960001-POCSND
2018-05-157051696001-POCSND
2018-06-057053650001-POCSND
2018-06-127054595001-POCSND
2018-07-037057062001-POCSND
2018-07-107057626001-POCSND
2018-07-177058459003ND
2018-08-077060608001-POCSND
2018-08-147061441004ND
2018-08-217062236001-POCSND
2018-09-107064182001-POCSND
2018-09-187065171001-POCSND
2018-10-027066551001-POCSND
2018-10-097067228003ND
2018-10-167068040003ND
2018-10-237068747001ND
2018-11-057069972002ND
2018-11-137070806002ND
2018-11-207071627001-POCSND
2018-12-117073531002ND
2018-12-187074235002ND
2019-01-027075227001ND
2019-01-087075823001ND
2019-01-157076589001ND
2019-02-057078455001-POCSND
2019-02-197079967001-POCSND
2019-03-057081236001ND
2019-03-127082034002ND
2019-04-027084246001-POCSND
2019-05-147089369001-POCSND
2019-05-227090411001-POCSND
2019-06-047091918001ND
2019-06-117093100001-POCSND
2019-07-027096087002ND
2019-07-097096701003ND
2019-08-0670100128002ND
2019-08-2070102065001-POCSND
2019-09-0370103425001ND
2019-09-1070104362001-POCSND
2019-09-1770105237001-POCSND
2019-10-0270106988001-POCSND
2019-10-0870107642002ND
2019-10-1570108487001-POCSND
2019-11-0470110526002ND
2019-11-1270111430002ND
2019-11-1970112330002ND
2019-12-0370113806001ND
2019-12-1070114748001ND
2019-12-1770115728002ND