Nitrate and nitrite
White Plains City
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)
4
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.225 ppm | 2 | 2 | 0.223 ppm - 0.227 ppm |
| 2015 | 0.269 ppm | 2 | 2 | 0.261 ppm - 0.276 ppm |
| 2016 | 0.0980 ppm | 2 | 2 | 0.0970 ppm - 0.0990 ppm |
| 2017 | 0.119 ppm | 2 | 2 | 0.117 ppm - 0.120 ppm |
| 2018 | 0.125 ppm | 2 | 2 | 0.124 ppm - 0.126 ppm |
| 2019 | 0.130 ppm | 2 | 2 | 0.129 ppm - 0.131 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 |
|---|---|---|
| 2014-06-25 | 14-6186 N | 0.223 ppm |
| 2014-06-25 | 14-6177 N | 0.227 ppm |
| 2015-06-23 | 15-6103 N | 0.276 ppm |
| 2015-06-23 | 15-6104 N | 0.261 ppm |
| 2016-06-22 | 16-8296 N | 0.0970 ppm |
| 2016-06-22 | 16-8295 N | 0.0990 ppm |
| 2017-06-20 | 17-6190-NIT | 0.120 ppm |
| 2017-06-20 | 17-6192-NIT | 0.117 ppm |
| 2018-06-20 | 18-6370 NIT | 0.126 ppm |
| 2018-06-20 | 18-6369 NIT | 0.124 ppm |
| 2019-06-18 | 19-6351 NIT | 0.131 ppm |
| 2019-06-18 | 19-6352 NIT | 0.129 ppm |