Know Your Environment. Protect Your Health.

Nitrate and nitrite

Howard Water Co-op

NOTE: Howard Water Co-op purchases water from Rockett SUD which is required to test for nitrate and nitrite. Sample information shown below was taken by Rockett SUD.

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.

 

1

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.439 ppm110.439 ppm
2019N/A00N/A
2020ND10ND
2021N/A00N/A
2022N/A00N/A
2023N/A00N/A

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

NOTE: Howard Water Co-op purchases water from Rockett SUD which is required to test for nitrate and nitrite. Sample information shown below was taken by Rockett SUD.

Date Lab ID Result
2018-06-13Q18235460010.439 ppm