Know Your Environment. Protect Your Health.

Nitrate and nitrite

Huttig Waterworks

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND40ND
2020ND20ND
20210.0367 ppm31ND - 0.110 ppm
2022ND20ND
2023ND20ND

ppm = parts per million

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.14 ppm

The EWG 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
2018-05-01Y181230005ND
2018-10-29Y183050003ND
2019-05-01Y191220033ND
2019-05-13Y191360008ND
2019-09-03Y192490002ND
2019-10-15Y192900023ND
2020-06-16Y201700046ND
2020-11-30Y203380011ND
2021-05-19Y2114000220.110 ppm
2021-08-30Y212450017ND
2021-11-17Y213220014ND
2022-05-23Y221460044ND
2022-11-14Y223210019ND
2023-05-30Y231520014ND
2023-10-24Y232990020ND