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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Water Authority of Western Nassau

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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87

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND110ND
2015ND100ND
2016ND80ND
2017ND160ND
2018ND150ND
2019ND270ND

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
2014-04-031404334-002-POCSND
2014-04-041404413-002-PRIND
2014-04-154B37-001-PRIND
2014-04-151404B37-003-PRIND
2014-06-261406K18-001-PRIND
2014-07-241407I28-002-PRIND
2014-07-241407I28-004-PRIND
2014-08-051408272-002-PRIND
2014-08-071408502-002-PRIND
2014-08-191408E03-002-PRIND
2014-08-191408E03-004-PRIND
2015-02-191502B82-002-PRIND
2015-03-171503B91-002-PRIND
2015-03-191503D92-002-PRIND
2015-03-311503L73-002-PRIND
2015-04-161504D00-002-PRIND
2015-04-2815104L90-002ND
2015-05-261505I52-002-PRIND
2015-05-261505I52-003-PRIND
2015-05-261505I52-001-PRIND
2015-07-071507395-002-PRIND
2016-02-031602317-006-PRIND
2016-02-031602317-004-PRIND
2016-03-311603O84-001-PRIND
2016-06-071606661-002-PRIND
2016-06-0916069-002-PRIND
2016-06-231606O29-002-PRIND
2016-08-021608251-002-PRIND
2016-08-041608542-001-PRIND
2017-01-17709292004-PRIND
2017-01-17709292007-PRIND
2017-01-17709292008-PRIND
2017-01-17709292009-PRIND
2017-01-19709502006-PRIND
2017-01-19709502004-PRIND
2017-01-19709502002-PRIND
2017-02-027010479002-PRIND
2017-04-257017169002ND
2017-05-237019330002-PRIND
2017-05-25701967002-PRIND
2017-05-257019670003-PRIND
2017-05-257019670004-PRIND
2017-07-207024838002ND
2017-08-017025877002-PRIND
2017-10-267034134002ND
2018-01-167040545002-PRIND
2018-01-167040545004-PRIND
2018-01-16704054003-PRIND
2018-01-167040545005-PRIND
2018-01-187040828011-PRIND
2018-01-187040828003-PRIND
2018-01-187040828005-PRIND
2018-01-187040828007-PRIND
2018-02-157043097002-PRIND
2018-06-197055477002-SECND
2018-06-197055477001-SECND
2018-06-197055477003-SECND
2018-07-197058887006ND
2018-07-197058888002-PRIND
2018-10-117067682003ND
2019-01-297077818009-PRIND
2019-01-297077818010-SECND
2019-01-297077818007-PRIND
2019-01-297077818005-PRIND
2019-01-297077820005ND
2019-01-317078075010-SECND
2019-01-317078075011-SECND
2019-01-317078075001-SECND
2019-01-317078075002-SECND
2019-01-317078075007-SECND
2019-01-317078075004-SECND
2019-02-147079642002-SECND
2019-04-257087239001-SECND
2019-04-257087239006ND
2019-06-047092027001-PRIND
2019-06-047092027002-PRIND
2019-06-047092027003-PRIND
2019-06-067092576002ND
2019-07-037096363001ND
2019-07-167097708001ND
2019-07-167097708002ND
2019-08-2770102934002-PRIND
2019-09-1070104400002-PRIND
2019-09-2470106092002-PRIND
2019-10-0870107751008ND
2019-10-0870107751009ND
2019-12-1770115702002-PRIND