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EWG's Tap Water Database — 2021 UPDATE

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Nitrate

The River Community

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.

MORE ABOUT THIS CONTAMINANT

 

69

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND110ND
2015ND120ND
2016ND110ND
2017ND110ND
2018ND120ND
20190.0692 ppm121ND - 0.830 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
2014-01-099590-001-0700ND
2014-02-269590-001-1500ND
2014-03-269590-001-0800ND
2014-04-289590-001-1200ND
2014-05-279590-001-1400ND
2014-06-239590-001-0900ND
2014-07-239590-001-1100ND
2014-08-289590-001-1100ND
2014-09-269590-001-1200ND
2014-11-219590-001-1230ND
2014-12-269590-001-1045ND
2015-01-309590-001-0600ND
2015-02-279590-001-1225ND
2015-03-279590-001-0930ND
2015-04-289590-001-1100ND
2015-05-279590-001-1100ND
2015-06-299590-001-0600ND
2015-07-279590-001-1115ND
2015-08-289590-001-0700ND
2015-09-239590-001-0900ND
2015-10-139590-001-1400ND
2015-11-259590-001-1040ND
2015-12-199590-001-1015ND
2016-01-269590-001-1240ND
2016-02-269590-001-1325ND
2016-03-269590-001-1130ND
2016-04-239590-001-1005ND
2016-05-139590-001-1610ND
2016-07-089590-001-1345ND
2016-07-299590-001-1515ND
2016-08-199590-001-1530ND
2016-10-219590-001-1330ND
2016-11-189590-001-1050ND
2016-12-279590-001-1315ND
2017-01-289590-001-1055ND
2017-02-279590-001-2020ND
2017-03-259590-001-1140ND
2017-04-259590-001-2030ND
2017-06-299590-001-2030ND
2017-07-209590-001-2130ND
2017-08-179590-001-2110ND
2017-09-289590-001-2130ND
2017-10-269590-001-2140ND
2017-11-289590-001-2100ND
2017-12-289590-001-2010ND
2018-01-289590-001-1730ND
2018-02-199590-001-1540ND
2018-03-259590-001-1950ND
2018-04-279590-001-1230ND
2018-05-259590-001-0950ND
2018-06-299590-001-1130ND
2018-07-279590-001-0750ND
2018-08-279590-001-2130ND
2018-09-289590-001-0915ND
2018-10-309590-001-1830ND
2018-11-259590-001-2010ND
2018-12-219590-001-1020ND
2019-01-299590-001-2125ND
2019-02-189590-001-1225ND
2019-03-299590-001-1230ND
2019-04-269590-001-1315ND
2019-05-309590-001-1930ND
2019-06-289590-001-0905ND
2019-07-309590-001-20300.830 ppm
2019-08-309590-001-1340ND
2019-09-279590-001-0915ND
2019-10-299590-001-1700ND
2019-11-269590-001-1250ND
2019-12-259590-001-1510ND