Know Your Environment. Protect Your Health.

Nitrate and nitrite

Pecan Utilities Oak Ridge Subdivision

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.120 ppm110.120 ppm
20190.570 ppm110.570 ppm
20200.120 ppm110.120 ppm
20210.210 ppm110.210 ppm
20220.150 ppm110.150 ppm
20230.0433 ppm32ND - 0.0800 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
2018-02-06AE123430.120 ppm
2019-01-24AE510720.570 ppm
2020-04-14AF065350.120 ppm
2021-03-08AF455380.210 ppm
2022-03-07AF875930.150 ppm
2023-03-14AG327610.0500 ppm
2023-05-26AG42207ND
2023-08-22AG533300.0800 ppm