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.
7
Samples
0
Samples exceeding legal limit (MCL)
4
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | 0.00200 ppm | 1 | 1 | 0.00200 ppm |
| 2018 | 0.597 ppm | 3 | 3 | 0.0130 ppm - 0.937 ppm |
| 2019 | 0.652 ppm | 3 | 3 | 0.0140 ppm - 0.984 ppm |
ppm = parts per million
State and national drinking water standards and health guidelines
EWG Health Guideline 0.14 ppm
The 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 |
|---|---|---|
| 2017-02-08 | NO3 WELL #5 2017 | 0.00200 ppm |
| 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 CASSA | 0.958 ppm |
| 2019-03-20 | NO3 19 WL5 CASSA | 0.0140 ppm |
| 2019-03-20 | NO3 19 WL4 CASSA | 0.984 ppm |