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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

Las Virgenes Municipal Water District

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
20130.203 ppm31ND - 0.610 ppm
20140.550 ppm330.497 ppm - 0.587 ppm
20150.700 ppm110.700 ppm
20160.745 ppm220.630 ppm - 0.860 ppm
20170.587 ppm330.520 ppm - 0.640 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
2012-02-149590-004-1205ND
2012-05-229590-004-1045ND
2012-08-149590-004-1135ND
2012-11-069590-004-1255ND
2013-02-269590-004-1040ND
2013-08-159588-004-1205ND
2013-11-199588-004-10150.610 ppm
2014-02-199588-004-11000.565 ppm
2014-05-139588-004-11400.587 ppm
2014-11-189588-004-10250.497 ppm
2015-02-189588-004-10050.700 ppm
2016-02-179588-004-09420.630 ppm
2016-08-169588-004-10450.860 ppm
2017-02-229588-004-09320.600 ppm
2017-05-169588-004-11300.520 ppm
2017-08-239588-004-10070.640 ppm