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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

NJ Water Supply Authority Manasquan

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND
2018ND20ND
2019ND10ND

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
2014-02-11340211123ND
2014-11-03341103062ND
2015-02-03350203030ND
2015-11-10351110044ND
2016-02-10360210022ND
2016-11-15361115025ND
2017-02-14370214063ND
2017-11-21371121030ND
2018-02-20380220073ND
2018-11-20381120704ND
2019-02-26390226714ND