Know Your Environment. Protect Your Health.

Nitrate and nitrite

Lagrange PWS

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)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0230 ppm110.0230 ppm
20190.0520 ppm110.0520 ppm
20200.0370 ppm110.0370 ppm
20210.0950 ppm110.0950 ppm
20220.0600 ppm110.0600 ppm
20230.0250 ppm110.0250 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
2018-05-21AD200770.0230 ppm
2019-05-15AD475310.0520 ppm
2020-05-1820087910.0370 ppm
2021-05-1721108330.0950 ppm
2022-05-1022114490.0600 ppm
2023-05-0223080250.0250 ppm