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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

Genoa City Waterworks

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.273 ppm220.268 ppm - 0.278 ppm
2013ND20ND
20140.135 ppm21ND - 0.270 ppm
20150.286 ppm220.196 ppm - 0.376 ppm
20160.0230 ppm220.0180 ppm - 0.0280 ppm
20170.0135 ppm220.00400 ppm - 0.0230 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
2012-03-052030133-020.268 ppm
2012-03-052030133-030.278 ppm
2013-06-033060029-01ND
2013-06-033060029-03ND
2014-04-224040873-01ND
2014-04-224040870-010.270 ppm
2015-05-265050916-010.196 ppm
2015-05-265050916-02A0.376 ppm
2016-05-096050301-020.0180 ppm
2016-05-096050301-010.0280 ppm
2017-07-2517G0983-010.00400 ppm
2017-07-2517G0984-010.0230 ppm