The Power of Information
5 Years in a Row
Top rated, 2003-2007
At EWG, our team of scientists, engineers, policy experts, lawyers and computer programmers pores over government data, legal documents, scientific studies and our own laboratory tests to expose threats to your health and the environment, and to find solutions. Our research brings to light unsettling facts that you have a right to know.
Pouring It On: Table 2
In ten states, more than 10% of all drinking water wells are contaminated with nitrate above federal health standards
| State | Population Above EPA Standards |
% Contamination Above EPA Standards |
|---|---|---|
| Delaware | 48,311 | 35.0% |
| Kansas | 69,944 | 28.0% |
| Iowa | 124,771 | 18.3% |
| California | 428,301 | 15.0% |
| New York | 239,685 | 15.0% |
| Nebraska | 52,870 | 14.0% |
| Arizona | 37,612 | 14.0% |
| Illinois | 164,510 | 12.0% |
| Colorado | 29,800 | 12.0% |
| Wisconsin | 148,582 | 10.0% |
| Texas | 80,404 | 9.4% |
| Minnesota | 134,365 | 9.3% |
| Pennsylvania | 245,241 | 9.0% |
| Connecticut | 55,412 | 9.0% |
| Maryland | 67,437 | 8.0% |
| Maine | 43,100 | 8.0% |
| New Jersey | 61,936 | 6.8% |
| South Dakota | 9,428 | 6.7% |
| Virginia | 96,205 | 6.4% |
| Wyoming | 6,899 | 6.4% |
| Missouri | 51,330 | 5.0% |
| Oregon | 27,477 | 5.0% |
| North Dakota | 7,170 | 4.6% |
| Indiana | 69,900 | 4.5% |
| Kentucky | 42,289 | 4.2% |
| Idaho | 9,536 | 4.0% |
| Nevada | 3,215 | 4.0% |
| Arkansas | 22,341 | 3.9% |
| Ohio | 66,474 | 3.8% |
| Montana | 7,342 | 3.8% |
| North Carolina | 59,926 | 3.2% |
| Alaska | 4,763 | 3.2% |
| New Mexico | 6,165 | 2.0% |
| Utah | 1,140 | 2.0% |
| Washington | 13,533 | 1.5% |
| New Hampshire | 5,809 | 1.4% |
| Vermont | 3,213 | 1.4% |
| Michigan | 20,234 | 1.2% |
| Oklahoma | 5,762 | 1.2% |
| Florida | 17,099 | 1.0% |
| Georgia | 13,141 | 1.0% |
| Massachusetts | 5,118 | 1.0% |
| Tennessee | 8,175 | 0.9% |
| West Virginia | 5,396 | 0.9% |
| Louisiana | 4,855 | 0.8% |
| South Carolina | 9,579 | 0.7% |
| Mississippi | 1,316 | 0.2% |
