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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

City of Winston-Salem

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

 

140

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND30ND
2016ND320ND
2017ND360ND
2018ND300ND
2019ND360ND

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
2014-12-01AA50552ND
2014-12-01AA50553ND
2014-12-01AA50554ND
2015-12-14ND
2015-12-14ND
2015-12-14ND
2016-01-118881-011116-EP1NND
2016-01-118881-011116-EP2NND
2016-01-118881-011116-EP3NND
2016-04-188881-041816-EP1NND
2016-04-188881-041816-EP2NND
2016-04-188881-041816-EP3NND
2016-05-028881-050216-EP1NND
2016-05-028881-050216-EP2NND
2016-05-028881-050216-EP3NND
2016-06-018881-060116-EP1NND
2016-06-018881-060116-EP2NND
2016-06-138881-061316-EP1NND
2016-06-138881-061316-EP2NND
2016-06-138881-061316-EP3NND
2016-07-118881-071116-EP1NND
2016-07-118881-071116-EP2NND
2016-07-118881-071116-EP3NND
2016-08-088881-080816-EP1NND
2016-08-088881-080816-EP2NND
2016-08-088881-080816-EP3NND
2016-09-058881-090516-EP1NND
2016-09-058881-090516-EP2NND
2016-09-058881-090516-EP3NND
2016-10-038881-100316-EP1NND
2016-10-038881-100316-EP2NND
2016-10-038881-100316-EP3NND
2016-11-148881-111416-EP1NND
2016-11-148881-111416-EP2NND
2016-11-148881-111416-EP3NND
2016-12-128881-121216-EP1NND
2016-12-128881-121216-EP2NND
2016-12-128881-121216-EP3NND
2017-01-108881-011017-EP1NND
2017-01-108881-011017-EP2NND
2017-01-108881-011017-EP3NND
2017-02-068881-020617-EP1NND
2017-02-068881-020617-EP2NND
2017-02-068881-020617-EP3NND
2017-03-068881-030617-EP1NND
2017-03-068881-030617-EP2NND
2017-03-068881-030617-EP3NND
2017-04-038881-040317-EP1NND
2017-04-038881-040317-EP2NND
2017-04-038881-040317-EP3NND
2017-05-018881-050117-EP1NND
2017-05-018881-050117-EP2NND
2017-05-018881-050117-EP3NND
2017-06-128881-061217-EP1NND
2017-06-128881-061217-EP2NND
2017-06-128881-061217-EP3NND
2017-07-108881-071017-EP1NND
2017-07-108881-071017-EP2NND
2017-07-108881-071017-EP3NND
2017-08-078881-080717-EP1NND
2017-08-078881-080717-EP2NND
2017-08-078881-080717-EP3NND
2017-09-058881-090517-EP1NND
2017-09-058881-090517-EP2NND
2017-09-058881-090517-EP3NND
2017-10-028881-100217-EP1NND
2017-10-028881-100217-EP2NND
2017-10-028881-100217-EP3NND
2017-11-138881-111317-EP1NND
2017-11-138881-111317-EP2NND
2017-11-138881-111317-EP3NND
2017-12-118881-121117-EP1NND
2017-12-118881-121117-EP2NND
2017-12-118881-121117-EP3NND
2018-03-058881-030518-EP1NND
2018-03-058881-030518-EP2NND
2018-03-058881-030518-EP3NND
2018-04-168881-041618-EP1NND
2018-04-168881-041618-EP2NND
2018-04-168881-041618-EP3NND
2018-05-078881-050718-EP1NND
2018-05-078881-050718-EP2NND
2018-05-078881-050718-EP3NND
2018-06-048881-060418-EP1NND
2018-06-048881-060418-EP2NND
2018-06-048881-060418-EP3NND
2018-07-168881-071618-EP1NND
2018-07-168881-071618-EP2NND
2018-07-168881-071618-EP3NND
2018-08-138881-081318-EP1NND
2018-08-138881-081318-EP2NND
2018-08-138881-081318-EP3NND
2018-09-248881-092418-EP1NND
2018-09-248881-092418-EP2NND
2018-09-248881-092418-EP3NND
2018-10-228881-102218-EP1NND
2018-10-228881-102218-EP2NND
2018-10-228881-102218-EP3NND
2018-11-198881-111918-EP1NND
2018-11-198881-111918-EP2NND
2018-11-198881-111918-EP3NND
2018-12-118881-121118-EP1NND
2018-12-118881-121118-EP2NND
2018-12-118881-121118-EP3NND
2019-01-228881-012219-EP1NND
2019-01-228881-012219-EP2NND
2019-01-228881-012219-EP3NND
2019-02-048881-020419-EP1NND
2019-02-048881-020419-EP2NND
2019-02-048881-020419-EP3NND
2019-03-048881-030419-EP1NND
2019-03-048881-030419-EP2NND
2019-03-048881-030419-EP3NND
2019-04-018881-040119-EP1NND
2019-04-018881-040119-EP2NND
2019-04-018881-040119-EP3NND
2019-05-068881-050619-EP1NND
2019-05-068881-050619-EP2NND
2019-05-068881-050619-EP3NND
2019-06-038881-060319-EP1NND
2019-06-038881-060319-EP2NND
2019-06-038881-060319-EP3NND
2019-07-018881-070119-EP1NND
2019-07-018881-070119-EP2NND
2019-07-018881-070119-EP3NND
2019-08-268881-082619-EP1NND
2019-08-268881-082619-EP2NND
2019-08-268881-082619-EP3NND
2019-09-238881-092319-EP1NND
2019-09-238881-092319-EP2NND
2019-09-238881-092319-EP3NND
2019-10-078881-100719-EP1NND
2019-10-078881-100719-EP2NND
2019-10-078881-100719-EP3NND
2019-11-048881-110419-EP1NND
2019-11-048881-110419-EP2NND
2019-11-048881-110419-EP3NND
2019-12-028881-120219-EP1NND
2019-12-028881-120219-EP2NND
2019-12-028881-120219-EP3NND