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EWG's Tap Water Database — 2021 UPDATE

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Nitrate and nitrite

Greenville Utilities Comm.

Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.

MORE ABOUT THIS CONTAMINANT

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND50ND
2016ND50ND
2017ND50ND
2018ND50ND
2019ND40ND

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The health guideline of 0.14 parts per million, or ppm, for nitrate and nitrite is based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. This guideline represents a one-in-one-million annual cancer risk level.

EPA Maximum Contaminant
Level (MCL) 10 ppm

ppm = parts per million

All test results

Date Lab ID Result
2014-10-0737729_14-30456ND
2014-10-0737729_14-30457ND
2014-10-0737729_14-30458ND
2014-10-0737729_14-30459ND
2014-10-0737729_14-30455ND
2015-10-13ND
2015-11-05ND
2015-11-05ND
2015-11-05ND
2015-11-05ND
2016-10-2037729_16-36820ND
2016-10-2037729_16-36819ND
2016-10-2037729_16-36815ND
2016-10-2037729_16-36821ND
2016-10-2037729_16-36817ND
2017-10-1937729_17-39405ND
2017-10-1937729_17-39407ND
2017-10-1937729_17-39410ND
2017-10-1937729_17-39411ND
2017-10-1937729_17-39447ND
2018-10-1837729_18-43642 ND
2018-10-1837729_18-43641 ND
2018-10-1837729_18-43640 ND
2018-10-1837729_18-43639 ND
2018-10-1837729_18-43636 ND
2019-10-2437729_19-46060 ND
2019-10-2437729_19-46059 ND
2019-10-2437729_19-46058 ND
2019-10-2437729_19-46057 ND