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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

Plymouth Water Department

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.

 

57

Samples

0

Samples exceeding legal limit (MCL)

37

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.294 ppm880.110 ppm - 0.860 ppm
20130.265 ppm880.0700 ppm - 0.810 ppm
20140.485 ppm10100.0700 ppm - 2.37 ppm
20150.458 ppm10100.0500 ppm - 2.30 ppm
20160.445 ppm11110.0700 ppm - 2.31 ppm
20170.470 ppm10100.1000 ppm - 1.96 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
2012-01-050.160 ppm
2012-01-050.110 ppm
2012-01-050.320 ppm
2012-01-050.150 ppm
2012-01-050.110 ppm
2012-01-050.860 ppm
2012-01-050.340 ppm
2012-01-050.300 ppm
2013-01-030.0700 ppm
2013-01-030.310 ppm
2013-01-030.130 ppm
2013-01-030.0800 ppm
2013-01-030.810 ppm
2013-01-030.320 ppm
2013-01-030.240 ppm
2013-01-100.160 ppm
2014-01-082.37 ppm
2014-01-080.0700 ppm
2014-01-080.330 ppm
2014-01-080.130 ppm
2014-01-080.0900 ppm
2014-01-080.850 ppm
2014-01-080.400 ppm
2014-01-080.250 ppm
2014-01-080.160 ppm
2014-05-140.200 ppm
2015-02-250.0600 ppm
2015-02-252.30 ppm
2015-02-250.320 ppm
2015-02-250.1000 ppm
2015-02-250.0500 ppm
2015-02-250.900 ppm
2015-02-250.400 ppm
2015-02-250.240 ppm
2015-02-250.150 ppm
2015-03-160.0600 ppm
2016-01-260.0900 ppm
2016-01-260.370 ppm
2016-01-260.0700 ppm
2016-01-262.31 ppm
2016-01-260.0800 ppm
2016-01-260.930 ppm
2016-01-260.380 ppm
2016-01-260.170 ppm
2016-01-260.270 ppm
2016-02-110.0800 ppm
2016-05-020.140 ppm
2017-01-240.420 ppm
2017-01-241.96 ppm
2017-01-240.200 ppm
2017-01-240.420 ppm
2017-01-240.250 ppm
2017-01-240.150 ppm
2017-01-240.110 ppm
2017-01-240.980 ppm
2017-01-240.1000 ppm
2017-02-060.110 ppm