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EWG's Tap Water Database — 2019 UPDATE

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Nitrite

City of Cedar Hill

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND10ND
2014ND20ND
20150.00733 ppm32ND - 0.0115 ppm
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
2012-09-131209455001ND
2012-09-131209455002ND
2012-09-131209455003ND
2013-03-271303954001ND
2014-09-18Q1445680001ND
2014-09-18Q1445680002ND
2015-06-04Q15204550010.0115 ppm
2015-06-04Q15204550020.0105 ppm
2015-08-18Q1532615001ND