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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

Klondike Independent School District

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND40ND
2014ND40ND
2015ND30ND
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
2012-04-12AB86861ND
2012-07-10AB94888ND
2012-12-061212289001ND
2013-01-231301678001ND
2013-06-20Q1302604001ND
2013-09-10Q1306898001ND
2013-11-26Q1315112001ND
2014-03-13Q1408217001ND
2014-06-05Q1419528001ND
2014-09-03Q1440864001ND
2014-10-23Q1453729001ND
2015-04-15Q1514210007ND
2015-07-13Q1526487001ND
2015-10-14Q1540479001ND