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EWG's Tap Water Database — 2021 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.

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88

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND30ND
2016ND30ND
2017ND40ND
2018ND330ND
2019ND420ND

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
2014-03-24S507278ND
2014-03-24S507277ND
2014-03-24S507276ND
2015-12-17S628961ND
2015-12-17S628960ND
2015-12-17S628959ND
2016-10-11S719493ND
2016-10-11S719492ND
2016-10-11S719491ND
2017-06-15S737959ND
2017-06-15S737957ND
2017-06-15S737958ND
2017-10-31S779017ND
2018-03-28S769536ND
2018-03-28S769535ND
2018-03-28S769534ND
2018-04-27S732437ND
2018-04-27S732436ND
2018-04-27S732435ND
2018-05-30S732438ND
2018-05-30S732439ND
2018-05-30S732440ND
2018-06-29S732443ND
2018-06-29S732442ND
2018-06-29S732441ND
2018-07-26S732446ND
2018-07-26S732445ND
2018-07-26S732444ND
2018-08-30S732447ND
2018-08-30S732448ND
2018-08-30S732449ND
2018-09-28S815962ND
2018-09-28S815961ND
2018-09-28S815960ND
2018-10-26S815968ND
2018-10-26S815967ND
2018-10-26S815966ND
2018-11-30S815965ND
2018-11-30S815964ND
2018-11-30S815963ND
2018-12-03S850899ND
2018-12-03S850900ND
2018-12-03S850901ND
2018-12-27S815971ND
2018-12-27S815970ND
2018-12-27S815969ND
2019-01-30S815974ND
2019-01-30S815973ND
2019-01-30S815972ND
2019-02-27S815947ND
2019-02-27S815946ND
2019-02-27S815945ND
2019-03-29S815948ND
2019-03-29S815949ND
2019-03-29S815950ND
2019-04-29S815953ND
2019-04-29S815952ND
2019-04-29S815951ND
2019-05-30S815956ND
2019-05-30S815955ND
2019-05-30S815954ND
2019-06-28S815959ND
2019-06-28S815958ND
2019-06-28S815957ND
2019-07-02S837646ND
2019-07-02S837645ND
2019-07-02S837647ND
2019-07-30S837650ND
2019-07-30S837649ND
2019-07-30S837648ND
2019-08-29S837653ND
2019-08-29S837652ND
2019-08-29S837651ND
2019-09-27S837656ND
2019-09-27S837655ND
2019-09-27S837654ND
2019-10-10S920203ND
2019-10-10S920201ND
2019-10-10S920202ND
2019-10-30S837659ND
2019-10-30S837658ND
2019-10-30S837657ND
2019-11-25S837632ND
2019-11-25S837631ND
2019-11-25S837630ND
2019-12-27S837633ND
2019-12-27S837635ND
2019-12-27S837634ND