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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

City of Quincy

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.

 

46

Samples

0

Samples exceeding legal limit (MCL)

30

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.272 ppm53ND - 0.459 ppm
20130.295 ppm65ND - 0.575 ppm
20140.306 ppm128ND - 0.487 ppm
20150.327 ppm64ND - 0.562 ppm
20160.287 ppm53ND - 0.480 ppm
20170.316 ppm128ND - 0.501 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
2012-04-230.451 ppm
2012-04-230.459 ppm
2012-04-230.451 ppm
2012-04-24ND
2012-04-24ND
2013-04-220.399 ppm
2013-04-220.345 ppm
2013-04-230.0577 ppm
2013-04-23ND
2013-06-240.396 ppm
2013-09-160.575 ppm
2014-03-24ND
2014-03-24ND
2014-03-240.455 ppm
2014-03-240.447 ppm
2014-03-240.428 ppm
2014-09-020.412 ppm
2014-09-03ND
2014-09-030.478 ppm
2014-09-030.476 ppm
2014-09-030.483 ppm
2014-09-030.487 ppm
2014-09-03ND
2015-03-16ND
2015-03-230.518 ppm
2015-03-230.529 ppm
2015-03-23ND
2015-03-230.562 ppm
2015-08-170.350 ppm
2016-08-220.476 ppm
2016-08-220.480 ppm
2016-08-220.479 ppm
2016-08-23ND
2016-08-23ND
2017-08-14ND
2017-08-140.444 ppm
2017-08-140.457 ppm
2017-08-140.501 ppm
2017-08-140.470 ppm
2017-08-14ND
2017-08-23ND
2017-08-23ND
2017-08-310.487 ppm
2017-08-310.470 ppm
2017-08-310.483 ppm
2017-08-310.481 ppm