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EWG's Tap Water Database — 2021 UPDATE

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Nitrate

City of Florence

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.

MORE ABOUT THIS CONTAMINANT

 

55

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.1000 ppm101ND - 1.000 ppm
20150.0690 ppm101ND - 0.690 ppm
20160.0720 ppm101ND - 0.720 ppm
20170.0701 ppm92ND - 0.610 ppm
20180.0733 ppm91ND - 0.660 ppm
20190.117 ppm72ND - 0.800 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
2014-02-26AD35983ND
2014-02-26AD35984ND
2014-02-26AD35985ND
2014-02-26AD35986ND
2014-02-26AD35982ND
2014-03-05AD36483ND
2014-05-27AD403171.000 ppm
2014-05-27AD40319ND
2014-05-27AD40321ND
2014-05-27AD40322ND
2015-03-17AD530720.690 ppm
2015-03-18AD53105ND
2015-03-18AD53118ND
2015-03-18AD53116ND
2015-03-18AD53114ND
2015-03-18AD53112ND
2015-03-18AD53111ND
2015-03-18AD53109ND
2015-03-18AD53107ND
2015-03-18AD53103ND
2016-03-29AD73330ND
2016-03-29AD73332ND
2016-03-29AD73327ND
2016-03-29AD73331ND
2016-03-29AD73329ND
2016-03-29AD73326ND
2016-03-29AD733240.720 ppm
2016-03-29AD73328ND
2016-05-26AD76536ND
2016-05-26AD76537ND
2017-02-01AD89168ND
2017-02-01AD89166ND
2017-02-01AD89167ND
2017-02-01AD89164ND
2017-02-01AD89165ND
2017-02-01AD891580.610 ppm
2017-04-10AD923520.0210 ppm
2017-09-19AE00681ND
2017-12-06AE04811ND
2018-01-30AE06842ND
2018-01-30AE06840ND
2018-01-30AE06838ND
2018-01-30AE068290.660 ppm
2018-01-30AE06813ND
2018-04-11AE10678ND
2018-04-11AE10699ND
2018-10-23AE20304ND
2018-12-19AE23308ND
2019-01-15AE24141ND
2019-01-15AE241190.800 ppm
2019-01-15AE24140ND
2019-01-15AE24139ND
2019-04-04AE28249ND
2019-04-04AE282480.0220 ppm
2019-10-03AE38224ND