Chlorpyriphos
Status: No national drinking water standard exists
Chlorpyrifos is an organophosphate pesticide that has been widely used, but in 2021, application on food crops was banned by the EPA. Exposure to chlorpyrifos during pregnancy and early life harms the developing brain, including reduced IQ, delayed development of motor and sensory functions, and social and behavioral dysfunction.
2018-2021:
3
states detected
5
utilities detected
151,000
people served
States reporting chlorpyriphos in drinking water
| UTILITIES WITH CONTAMINATION | |||
|---|---|---|---|
| State | Utilities | People Served | |
| Ohio | 2 | 73,952 | |
| Minnesota | 2 | 63,302 | |
| Kentucky | 1 | 13,365 | |
Utilities with the highest amounts of chlorpyriphos, 2018-2021
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| City of Lorain* | Lorain, OH | 1 of 4 | 0.00763 ppb | 64,152 |
| Ramsey | Ramsey, MN | 1 of 6 | 0.00505 ppb | 14,252 |
| North Nelson Water District | Coxs Creek, KY | 1 of 8 | 0.00500 ppb | 13,365 |
| Edina | Edina, MN | 1 of 8 | 0.00390 ppb | 49,050 |
* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Chlorpyriphos, but it likely has the contaminant in its water supply.
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| City of Lorain* | Lorain, OH | 1 of 4 | 0.00763 ppb | 64,152 |
| Ramsey | Ramsey, MN | 1 of 6 | 0.00505 ppb | 14,252 |
| North Nelson Water District | Coxs Creek, KY | 1 of 8 | 0.00500 ppb | 13,365 |
| Edina | Edina, MN | 1 of 8 | 0.00390 ppb | 49,050 |
* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Chlorpyriphos, but it likely has the contaminant in its water supply.