Know Your Environment. Protect Your Health.

Nitrate and nitrite

Brockway Sanitary District 1

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.03 ppm221.02 ppm - 1.03 ppm
20191.09 ppm221.08 ppm - 1.10 ppm
20200.873 ppm220.865 ppm - 0.881 ppm
20210.735 ppm220.684 ppm - 0.785 ppm
20220.883 ppm220.880 ppm - 0.886 ppm
20230.770 ppm220.770 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
2018-07-173948210011.02 ppm
2018-07-173948220011.03 ppm
2019-08-064615920011.08 ppm
2019-08-064615910011.10 ppm
2020-08-185204230010.865 ppm
2020-08-185204280010.881 ppm
2021-08-185792110010.684 ppm
2021-08-185792120010.785 ppm
2022-08-226383790010.880 ppm
2022-08-226383770010.886 ppm
2023-08-15CB09664-040.770 ppm
2023-08-15CB09664-010.770 ppm