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EWG's Tap Water Database — 2021 UPDATE

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Nitrate and nitrite

Hope Water Light 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

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
20150.0163 ppm81ND - 0.130 ppm
2016ND80ND
2017ND80ND
20180.0138 ppm81ND - 0.110 ppm
2019ND80ND

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
2014-08-19142330030ND
2014-08-19142330031ND
2014-08-19142330029ND
2014-08-19142330027ND
2014-08-19142330032ND
2014-08-19142330028ND
2014-08-19142330026ND
2014-10-29Y143030005ND
2015-07-08Y151900024ND
2015-07-08Y1519000220.130 ppm
2015-07-08Y151900027ND
2015-07-08Y151900023ND
2015-07-08Y151900028ND
2015-07-08Y151900025ND
2015-07-08Y151900026ND
2015-10-05Y152820006ND
2016-07-20Y162030009ND
2016-07-20Y162030005ND
2016-07-20Y162030004ND
2016-07-20Y162030010ND
2016-07-20Y162030008ND
2016-07-20Y162030007ND
2016-07-20Y162030006ND
2016-10-05Y162800009ND
2017-07-18Y172010112ND
2017-07-18Y172010110ND
2017-07-18Y172010117ND
2017-07-18Y172010116ND
2017-07-18Y172010114ND
2017-07-18Y172010113ND
2017-07-18Y172010115ND
2017-10-03Y172780003ND
2018-07-24Y182080010ND
2018-07-24Y182080013ND
2018-07-24Y182080008ND
2018-07-24Y182080011ND
2018-07-24Y182080007ND
2018-07-24Y182080012ND
2018-07-24Y182080009ND
2018-10-03Y1827700020.110 ppm
2019-08-05Y192200005ND
2019-08-05Y192200006ND
2019-08-05Y192200002ND
2019-08-05Y192200003ND
2019-08-05Y192200007ND
2019-08-05Y192200004ND
2019-08-05Y192200001ND
2019-10-16Y192900002ND