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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

City of Scottsdale

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013N/A00N/A
2014ND130ND
2015ND10ND
2016N/A00N/A
2017ND90ND

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
2012-11-202111591-01ND
2014-02-05AB45662IND
2014-02-05AB45661IND
2014-02-05AB45660IND
2014-02-05AB45659IND
2014-02-11AB45852IND
2014-02-12AB45865IND
2014-02-13AB45913IND
2014-02-13AB45912IND
2014-03-13AB46644IND
2014-06-124061175-01ND
2014-06-124061176-01ND
2014-08-064080551-02TND
2014-08-27AB50551IND
2015-01-26AB54180ND
2017-01-23AB72209TND
2017-01-31AB72398TND
2017-01-31AB72396TND
2017-04-11AB74281ND
2017-04-18AZ74456ND
2017-05-03AB74954ND
2017-05-03AB74952ND
2017-05-11AB75252ND
2017-05-25AB75560ND