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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

Smyrna Water Department

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND30ND
2014ND30ND
2015ND30ND
2016ND30ND
2017ND40ND

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
2012-01-17S313413ND
2012-12-27S458599ND
2012-12-27S458598ND
2012-12-27S458597ND
2013-11-20S505045ND
2013-11-20S505046ND
2013-11-20S505047ND
2014-03-24S507278ND
2014-03-24S507277ND
2014-03-24S507276ND
2015-12-17S628961ND
2015-12-17S628960ND
2015-12-17S628959ND
2016-10-11S719491ND
2016-10-11S719492ND
2016-10-11S719493ND
2017-06-15S737959ND
2017-06-15S737958ND
2017-06-15S737957ND
2017-10-31S779017ND