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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

Canton Public Water System

Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.

 

18

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND30ND
20140.150 ppm32ND - 0.310 ppm
2015ND30ND
2016ND30ND
20170.0500 ppm31ND - 0.150 ppm

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.

EPA Maximum Contaminant
Level (MCL) 10 ppm

The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.

ppm = parts per million

All test results

Date Lab ID Result
2012-06-2523818ND
2012-06-2523822ND
2012-06-2523839ND
2013-07-0824934ND
2013-07-0824915ND
2013-07-0824911ND
2014-06-30258760.140 ppm
2014-06-30258900.310 ppm
2014-06-3025893ND
2015-07-2726934ND
2015-07-2726931ND
2015-07-2726929ND
2016-07-1127833ND
2016-07-1127839ND
2016-07-1127843ND
2017-07-1028784ND
2017-07-1028791ND
2017-07-10287940.150 ppm