Know Your Environment. Protect Your Health.

Nitrate and nitrite

Crossett Water Commission

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.

 

7

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
20190.160 ppm110.160 ppm
2020ND10ND
20210.180 ppm220.110 ppm - 0.250 ppm
2022ND10ND
20230.140 ppm110.140 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
2018-03-19Y180810002ND
2019-01-15Y1901700010.160 ppm
2020-01-14Y200170010ND
2021-01-13Y2101400130.110 ppm
2021-04-21Y2111200180.250 ppm
2022-02-09Y220410002ND
2023-01-11Y2301200240.140 ppm