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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

City of Gilroy

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND90ND
2013N/A00N/A
2014N/A00N/A
2015ND90ND
2016N/A00N/A
2017N/A00N/A

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
2012-05-215810-001-0850ND
2012-05-215810-006-1315ND
2012-05-215810-004-1045ND
2012-05-215810-002-1135ND
2012-05-225810-010-1115ND
2012-05-225810-009-1035ND
2012-05-225810-008-0955ND
2012-05-225810-007-0745ND
2012-05-225810-011-0835ND
2015-05-205810-010-0810ND
2015-05-205810-009-1100ND
2015-05-205810-008-1025ND
2015-05-205810-007-1300ND
2015-05-205810-006-0945ND
2015-05-215810-011-0955ND
2015-05-215810-004-1250ND
2015-05-215810-002-1010ND
2015-05-215810-001-0800ND