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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

University of Kansas

NOTE: University of Kansas purchases water from City of Lawrence which is required to test for nitrate. Sample information shown below was taken by City of Lawrence.

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.

 

32

Samples

0

Samples exceeding legal limit (MCL)

19

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.341 ppm86ND - 1.000 ppm
20130.312 ppm107ND - 0.800 ppm
20140.175 ppm83ND - 1.10 ppm
20150.140 ppm21ND - 0.280 ppm
20160.650 ppm220.320 ppm - 0.980 ppm
20170.915 ppm220.430 ppm - 1.40 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

NOTE: University of Kansas purchases water from City of Lawrence which is required to test for nitrate. Sample information shown below was taken by City of Lawrence.

Date Lab ID Result
2012-02-15FEB2012-GENCHEM0.200 ppm
2012-02-15FEB-12-GENCHEM1.000 ppm
2012-05-02578349WS0.270 ppm
2012-05-02578348WS0.560 ppm
2012-05-16MAY2012-GENCHEMND
2012-05-16MAY-12-GENCHEMND
2012-11-14NOV-12-GENCHEM0.300 ppm
2012-11-14NOV2012-GENCHEM0.400 ppm
2013-02-13FEB2013-GENCHEM0.1000 ppm
2013-02-13FEB-13-GENCHEMND
2013-05-08595845WSND
2013-05-08595844WS0.620 ppm
2013-05-13MAY2013-GENCHEMND
2013-05-13MAY-13-GENCHEM0.800 ppm
2013-08-14AUG-13-GENCHEM0.500 ppm
2013-08-14AUG2013-GENCHEM0.200 ppm
2013-11-13NOV2013-GENCHEM0.400 ppm
2013-11-13NOV-13-GENCHEM0.500 ppm
2014-02-12FEB2014-GENCHEMND
2014-02-12FEB-14-GENCHEM1.10 ppm
2014-04-1798230ND
2014-04-1798229ND
2014-05-21MAY2014-GENCHEM0.200 ppm
2014-05-21MAY-14-GENCHEMND
2014-08-13AUG2014-GENCHEM0.1000 ppm
2014-08-13AUG-14-GENCHEMND
2015-04-21316510ND
2015-04-213164630.280 ppm
2016-05-045385190.320 ppm
2016-05-045385220.980 ppm
2017-04-257469830.430 ppm
2017-04-257469851.40 ppm