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EWG's Tap Water Database — 2021 UPDATE

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Nitrate

City of Ridgeland

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

 

49

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND70ND
2016ND70ND
2017ND80ND
2018ND80ND
20190.0150 ppm121ND - 0.180 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
2014-04-15140416-006NIND
2014-04-15140416-005NIND
2014-04-15140416-004NIND
2014-04-15140416-003NIND
2014-04-15140416-002NIND
2014-04-15140416-001NIND
2014-11-17141118-003NIND
2015-04-06150407-003NIND
2015-04-06150407-001NIND
2015-04-06150407-002NIND
2015-04-06150407-004NIND
2015-04-06150407-005NIND
2015-04-06150407-006NIND
2015-04-06150407-009NIND
2016-04-26160427-027NIND
2016-04-26160427-026NIND
2016-04-26160427-024NIND
2016-04-26160427-013NIND
2016-04-26160427-012NIND
2016-04-26160427-011NIND
2016-04-26160427-009NIND
2017-03-06170309-064NIND
2017-03-06170309-063NIND
2017-03-06170309-062NIND
2017-03-08170309-079NIND
2017-03-08170309-066NIND
2017-03-08170309-065NIND
2017-03-08170309-061NIND
2017-10-31171101-005NIND
2018-03-05180306-013NIND
2018-03-05180306-014NIND
2018-03-05180306-015NIND
2018-03-05180306-016NIND
2018-03-05180306-022NIND
2018-03-05180306-038NIND
2018-03-05180306-049NIND
2018-03-05180306-054NIND
2019-02-25190226-010NIND
2019-02-25190226-028NIND
2019-02-25190226-026NIND
2019-02-25190226-025NI0.180 ppm
2019-02-25190226-024NIND
2019-02-25190226-020NIND
2019-02-25190226-018NIND
2019-02-25190226-017NIND
2019-02-25190226-016NIND
2019-02-25190226-015NIND
2019-02-25190226-014NIND
2019-02-25190226-012NIND