Know Your Environment. Protect Your Health.

Nitrate and nitrite

Treasure State Acres Wua

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.826 ppm110.826 ppm
20190.920 ppm110.920 ppm
20200.845 ppm110.845 ppm
20210.746 ppm110.746 ppm
20220.905 ppm110.905 ppm
20230.765 ppm110.765 ppm

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
2018-01-031801023-010.826 ppm
2019-01-081901125-010.920 ppm
2020-01-062001032-010.845 ppm
2021-02-012102015-010.746 ppm
2022-01-042201049-010.905 ppm
2023-01-032301014-010.765 ppm