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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.597 ppm | 3 | 3 | 0.0130 ppm - 0.937 ppm |
| 2019 | 0.652 ppm | 3 | 3 | 0.0140 ppm - 0.984 ppm |
| 2020 | 0.800 ppm | 3 | 2 | ND - 1.30 ppm |
| 2021 | 0.867 ppm | 3 | 2 | ND - 1.40 ppm |
| 2022 | ND | 3 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/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 |
|---|---|---|
| 2018-03-21 | NO3 WELL 4 2018 | 0.937 ppm |
| 2018-03-21 | NO3 WELL 5 2018 | 0.0130 ppm |
| 2018-03-21 | NO3 WELL 1 2018 | 0.842 ppm |
| 2019-03-20 | NO3 19 WL1 CASSADAGA | 0.958 ppm |
| 2019-03-20 | NO3 19 WL5 CASSADAGA | 0.0140 ppm |
| 2019-03-20 | NO3 19 WL4 CASSADAGA | 0.984 ppm |
| 2020-08-19 | NO3 20 WL1 CASSADAGA | 1.10 ppm |
| 2020-08-19 | NO3 20 WL4 CASSADAGA | 1.30 ppm |
| 2020-08-19 | NO3 20 WL5 CASSADAGA | ND |
| 2021-03-31 | NO3 21 WL1 CASSADAGA | 1.20 ppm |
| 2021-03-31 | NO3 21 WL4 CASSADAGA | 1.40 ppm |
| 2021-03-31 | NO3 21 WL5 CASSADAGA | ND |
| 2022-03-16 | NO3 22 WL1 CASSADAGA | ND |
| 2022-03-16 | NO3 22 WL4 CASSADAGA | ND |
| 2022-03-16 | NO3 22 WL5 CASSADAGA | ND |