Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Nitrite

City of Mesa

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.

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND300ND
2013N/A00N/A
2014N/A00N/A
2015ND50ND
2016ND10ND
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
2012-04-16201204160112IND
2012-05-07201205070067IND
2012-05-07201205070059IND
2012-05-08201205080126IND
2012-08-06201208060117IND
2012-08-06201208060116IND
2012-08-06201208060115IND
2012-08-07201208070367IND
2012-08-08201208080565IND
2012-08-08201208080563IND
2012-08-08201208080564IND
2012-08-13201208130185IND
2012-08-13201208130184IND
2012-08-13201208130183IND
2012-08-14201208140229IND
2012-08-14201208140228IND
2012-08-14201208140227IND
2012-08-15201208150503IND
2012-08-15201208150502IND
2012-08-15201208150501IND
2012-08-2212070786ND
2012-08-2212070783ND
2012-08-2212070778ND
2012-08-2712070779ND
2012-08-2712070777ND
2012-08-2712070772ND
2012-08-2812070785ND
2012-08-2812070781ND
2012-09-27201209270445IND
2012-11-202012112001155IND
2015-07-0715070119IND
2015-07-2015070391ND
2015-07-2115070448ND
2015-08-25550-50084-1ND
2015-11-03550-53722-1ND
2016-06-0816060165IND