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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

Miramar (East & West) Plants

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)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.104 ppm21ND - 0.208 ppm
2013ND20ND
2014ND20ND
20150.197 ppm220.0670 ppm - 0.327 ppm
20160.00600 ppm21ND - 0.0120 ppm
2017ND20ND

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
2012-09-13ND
2012-09-130.208 ppm
2013-09-10ND
2013-09-10ND
2014-09-09ND
2014-09-09ND
2015-09-090.327 ppm
2015-09-090.0670 ppm
2016-09-13ND
2016-09-130.0120 ppm
2017-09-29ND
2017-09-29ND