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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

Palmer Water District No.1

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.173 ppm32ND - 0.268 ppm
20130.186 ppm330.0170 ppm - 0.344 ppm
20140.178 ppm32ND - 0.324 ppm
20150.118 ppm42ND - 0.257 ppm
20160.217 ppm32ND - 0.427 ppm
20170.289 ppm32ND - 0.581 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
2012-12-110.250 ppm
2012-12-11ND
2012-12-110.268 ppm
2013-12-180.344 ppm
2013-12-180.0170 ppm
2013-12-180.196 ppm
2014-11-240.210 ppm
2014-11-24ND
2014-11-240.324 ppm
2015-12-010.257 ppm
2015-12-01ND
2015-12-010.214 ppm
2015-12-02ND
2016-10-260.223 ppm
2016-10-26ND
2016-10-260.427 ppm
2017-11-150.285 ppm
2017-11-15ND
2017-11-150.581 ppm