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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

Rockford

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.

 

54

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND220ND
2013ND40ND
2014ND20ND
2015ND220ND
2016ND30ND
2017ND10ND

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
2012-04-252043207-01ND
2012-04-252043207-06ND
2012-04-252043207-02ND
2012-04-252043207-05ND
2012-04-252043207-04ND
2012-04-252043207-03ND
2012-05-162052166-03ND
2012-05-292053481-01ND
2012-05-292053481-04ND
2012-06-052060761-05ND
2012-06-052060761-06ND
2012-06-052060761-04ND
2012-06-052060761-02ND
2012-06-052060761-03ND
2012-06-052060761-01ND
2012-06-202062941-05ND
2012-06-202062941-02ND
2012-06-202062941-01ND
2012-06-212062941-04ND
2012-10-242103457-05ND
2012-10-242103457-03ND
2012-10-242103457-01ND
2013-03-123031609-01ND
2013-06-283063989-01ND
2013-12-113121606-02ND
2013-12-113121606-01ND
2014-07-304074473-01ND
2014-12-034120551-01ND
2015-04-085041271-01ND
2015-04-155042508-01ND
2015-04-155042508-02ND
2015-04-225043414-04ND
2015-04-225043414-05ND
2015-04-225043414-02ND
2015-05-135051942-06ND
2015-05-135051942-04ND
2015-05-135051942-01ND
2015-05-135051942-02ND
2015-05-135051942-03ND
2015-05-205053045-01ND
2015-05-275053787-02ND
2015-06-035060644-01ND
2015-06-105061807-01ND
2015-07-225073709-01ND
2015-10-215103178-06ND
2015-10-215103178-02ND
2015-10-215103178-04ND
2015-10-285104119-02ND
2015-11-045110645-04ND
2015-11-185112827-02ND
2016-04-206043262-03ND
2016-04-276044108-02ND
2016-06-086061378-01ND
2017-07-267075066-01ND