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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

City of Arvada

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
20140.140 ppm220.120 ppm - 0.160 ppm
20150.0533 ppm63ND - 0.110 ppm
20160.0357 ppm72ND - 0.150 ppm
20170.0543 ppm73ND - 0.140 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
2012-02-15ND
2012-05-14ND
2013-02-12ND
2013-06-04ND
2014-02-120.160 ppm
2014-05-190.120 ppm
2015-02-11ND
2015-05-120.1000 ppm
2015-06-16ND
2015-08-05ND
2015-08-050.110 ppm
2015-11-090.110 ppm
2016-02-11ND
2016-05-140.1000 ppm
2016-06-21ND
2016-08-160.150 ppm
2016-08-16ND
2016-10-04ND
2016-11-08ND
2017-02-07ND
2017-05-160.140 ppm
2017-06-13ND
2017-08-30ND
2017-08-30ND
2017-10-030.120 ppm
2017-11-070.120 ppm