Know Your Environment. Protect Your Health.

Nitrate and nitrite

Sagerton Water Supply Corporation

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.

 

5

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.207 ppm110.207 ppm
20190.315 ppm110.315 ppm
20200.161 ppm110.161 ppm
20210.0602 ppm110.0602 ppm
20220.128 ppm110.128 ppm
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

Date Lab ID Result
2018-03-01Q18085960030.207 ppm
2019-02-28Q19087490020.315 ppm
2020-03-10Q20095500010.161 ppm
2021-03-09Q21060590030.0602 ppm
2022-03-10Q22083910010.128 ppm