Know Your Environment. Protect Your Health.

Nitrate and nitrite

Cassadaga Village

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.597 ppm330.0130 ppm - 0.937 ppm
20190.652 ppm330.0140 ppm - 0.984 ppm
20200.800 ppm32ND - 1.30 ppm
20210.867 ppm32ND - 1.40 ppm
2022ND30ND
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
2018-03-21NO3 WELL 4 20180.937 ppm
2018-03-21NO3 WELL 5 20180.0130 ppm
2018-03-21NO3 WELL 1 20180.842 ppm
2019-03-20NO3 19 WL1 CASSADAGA0.958 ppm
2019-03-20NO3 19 WL5 CASSADAGA0.0140 ppm
2019-03-20NO3 19 WL4 CASSADAGA0.984 ppm
2020-08-19NO3 20 WL1 CASSADAGA1.10 ppm
2020-08-19NO3 20 WL4 CASSADAGA1.30 ppm
2020-08-19NO3 20 WL5 CASSADAGAND
2021-03-31NO3 21 WL1 CASSADAGA1.20 ppm
2021-03-31NO3 21 WL4 CASSADAGA1.40 ppm
2021-03-31NO3 21 WL5 CASSADAGAND
2022-03-16NO3 22 WL1 CASSADAGAND
2022-03-16NO3 22 WL4 CASSADAGAND
2022-03-16NO3 22 WL5 CASSADAGAND