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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

Lake Mills 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)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND30ND
2014N/A00N/A
20150.0167 ppm31ND - 0.0500 ppm
20160.00900 ppm31ND - 0.0270 ppm
2017N/A00N/A

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
2012-02-27652419ND
2012-08-22679849ND
2012-08-28680753ND
2013-02-18706432ND
2013-02-19706436ND
2013-02-20706437ND
2015-04-158545630.0500 ppm
2015-05-19861001ND
2015-05-20861002ND
2016-02-03903941ND
2016-02-03903942ND
2016-02-039039450.0270 ppm