National Drinking Water Database
National Drinking Water Database - Chemical Contaminants
Parathion (ethyl)
Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.
Ethyl parathion is a highly toxic, restricted use organophosphate insecticide and miticide applied to alfalfa, barley, corn, cotton, canola, sorghum, soybean, sunflower, and wheat.
Detected |
Found above health guidelines |
Found above legal limit |
|
|---|---|---|---|
| States | 1 |
1 |
- |
| Water utilities | 1 |
1 |
- |
| People Served | 2,840 |
2,840 |
- |
Parathion (ethyl) Exposure by State
Water utilities in 1 states have reported detecting Parathion (ethyl) in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.
| State | Water Suppliers with Parathion (ethyl) contamination | Water suppliers reporting Parathion (ethyl) above health-based limits | ||
|---|---|---|---|---|
| Systems | Population | Systems | Population | |
| Maine | 1 | 2,840 | 1 | 2,840 |
| Total | 1 | 2,840 | 1 | 2,840 |
The Most Polluted Communities
1 water utilities reported detecting Parathion (ethyl) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies
Ranked by highest average Parathion (ethyl) level
| Rank | System | Population Served | Positive test results of total reported tests | Average Level (Range) |
|---|---|---|---|---|
| 1 | Madawaska Water District Madawaska, ME | 2,840 | 1 of 1 | 0.63 ppb (0.63 ppb) |
Health Based Limits for Parathion (ethyl)
| Standard | Description | Level |
|---|---|---|
| Health-Based Screening Level | A benchmark concentration of contaminants in water that may be of potential concern for human health, if exceeded. For noncarcinogens, the HBSL represents the contaminant concentration in drinking water that is not expected to cause any adverse effects over a lifetime of exposure. For carcinogens, the HBSL range represents the contaminant concentration in drinking water that corresponds to an excess estimated lifetime cancer risk of 1 chance in 1 million to 1 chance in 10 thousand. Source: U.S. Geological Survey. | 0.02 ppb |
Testing Summary for Parathion (ethyl)
| Are tests routinely required for Parathion (ethyl) by federal law? | No |
| Water suppliers reporting tests for Parathion (ethyl) (2004-2009): | 1,155 of 47,576 |
| Average testing rate for water supplier reporting tests (2004-2009): | 0.3 per year |