Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Nitrate and nitrite

Cole County PWSD 1

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

 

36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND60ND
2015ND60ND
2016ND60ND
2017ND60ND
20180.00183 ppm61ND - 0.0110 ppm
20190.00400 ppm62ND - 0.0130 ppm

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
2014-02-25AC18667ND
2014-02-26AC18662ND
2014-02-26AC18663ND
2014-02-26AC18664ND
2014-02-26AC18665ND
2014-02-26AC18666ND
2015-02-18AC42233ND
2015-02-18AC42237ND
2015-02-18AC42235ND
2015-02-18AC42234ND
2015-02-18AC42238ND
2015-02-18AC42236ND
2016-02-11AC66675ND
2016-02-11AC66677ND
2016-02-11AC66676ND
2016-02-11AC66674ND
2016-02-11AC66673ND
2016-02-11AC66672ND
2017-02-15AC91116ND
2017-02-15AC91121ND
2017-02-15AC91119ND
2017-02-15AC91117ND
2017-02-15AC91120ND
2017-02-15AC91118ND
2018-02-22AD14506ND
2018-02-22AD14510ND
2018-02-22AD14507ND
2018-02-22AD14508ND
2018-02-22AD145090.0110 ppm
2018-03-19AD17713ND
2019-02-11AD39681ND
2019-02-11AD39682ND
2019-02-11AD39683ND
2019-02-11AD396840.0110 ppm
2019-02-11AD39685ND
2019-02-11AD396860.0130 ppm