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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

City of Manteca

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.

 

47

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND80ND
2013ND80ND
2014ND60ND
2015ND140ND
2016ND70ND
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
2012-02-085810-044-0745ND
2012-05-085810-013-0710ND
2012-05-085810-016-1115ND
2012-05-085810-028-0810ND
2012-06-051098-049-0611ND
2012-06-125810-049-0717ND
2012-08-071098-015-0545ND
2012-09-041098-030-0843ND
2013-04-105810-012-0805ND
2013-05-155810-034-0746ND
2013-06-055810-038-0745ND
2013-06-111098-038-0739ND
2013-07-175810-032-0730ND
2013-07-231098-032-0807ND
2013-08-061098-014-0705ND
2013-08-145810-014-0810ND
2014-01-211098-036-0838ND
2014-04-085810-040-0825ND
2014-04-081098-040-0825ND
2014-06-031098-042-0639ND
2014-06-105810-042-0750ND
2014-08-281098-015-1407ND
2015-02-105810-044-0644ND
2015-04-271098-012-0802ND
2015-05-051098-016-0725ND
2015-05-051098-028-0755ND
2015-05-051098-013-0710ND
2015-05-125810-016-0725ND
2015-05-125810-013-0750ND
2015-05-125810-028-1535ND
2015-06-021098-049-0630ND
2015-06-095810-049-0650ND
2015-07-215810-034-0812ND
2015-08-115810-015-0815ND
2015-09-085810-030-1045ND
2015-12-095810-036-0840ND
2016-04-195810-012-0920ND
2016-06-071098-038-0538ND
2016-06-145810-038-0645ND
2016-07-051098-032-0531ND
2016-07-125810-032-0630ND
2016-08-021098-014-0615ND
2016-08-235810-014-0715ND
2017-04-041098-040-1102ND
2017-05-095810-040-0859ND
2017-06-061098-042-0546ND
2017-09-125810-042-0637ND