Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Nitrate and nitrite

De Kalb

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.0286 ppm51ND - 0.143 ppm
20130.0636 ppm54ND - 0.232 ppm
20140.0244 ppm51ND - 0.122 ppm
20150.0980 ppm51ND - 0.490 ppm
2016N/A00N/A
2017N/A00N/A

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
2012-07-251207E44-001AND
2012-07-251207E44-002AND
2012-07-251207E44-005A0.143 ppm
2012-07-251207E44-003AND
2012-07-251207E44-004AND
2013-07-231307D17-001AND
2013-07-231307D17-005A0.232 ppm
2013-07-231307D17-004A0.0232 ppm
2013-07-231307D17-003A0.0246 ppm
2013-07-231307D17-002A0.0381 ppm
2014-07-091407635-003BND
2014-07-091407635-002B0.122 ppm
2014-07-091407635-004BND
2014-07-091407635-001BND
2014-07-091407635-005BND
2015-09-0215I0335-01ND
2015-09-0215I0335-02ND
2015-09-0215I0335-04ND
2015-09-0315I0335-03ND
2015-09-0315I0335-050.490 ppm