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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

Grand Ridge, Town of

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)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.160 ppm32ND - 0.380 ppm
2013ND30ND
20140.0367 ppm31ND - 0.110 ppm
20150.427 ppm31ND - 1.28 ppm
20160.333 ppm330.110 ppm - 0.510 ppm
20170.153 ppm31ND - 0.460 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 Result
2012-06-200.1000 ppm
2012-06-200.380 ppm
2012-06-20ND
2013-12-18ND
2013-12-18ND
2013-12-18ND
2014-09-100.110 ppm
2014-09-10ND
2014-09-10ND
2015-11-18ND
2015-11-18ND
2015-12-091.28 ppm
2016-10-120.510 ppm
2016-10-120.380 ppm
2016-10-120.110 ppm
2017-11-290.460 ppm
2017-11-29ND
2017-11-29ND