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.
| Rank | State | Total Major Facilities | Facilities with Expired Permits |
| 1 | Texas | 582 | 135 |
| 2 | Louisiana | 247 | 116 |
| 3 | Ohio | 268 | 93 |
| 4 | California | 235 | 85 |
| 5 | Indiana | 175 | 81 |
| 6 | Massachusetts* | 148 | 74 |
| 7 | Oregon | 76 | 51 |
| 8 | Colorado | 102 | 51 |
| 9 | New Jersey | 168 | 49 |
| 10 | North Carolina | 216 | 49 |
| 11 | Connecticut | 117 | 45 |
| 12 | Illinois | 268 | 45 |
| 13 | Michigan | 181 | 44 |
| 14 | Florida | 253 | 42 |
| 15 | Washington | 89 | 41 |
| 16 | Pennsylvania | 387 | 41 |
| 17 | Nebraska | 60 | 40 |
| 18 | Virginia | 145 | 40 |
| 19 | Minnesota | 85 | 37 |
| 20 | South Carolina | 191 | 37 |
| 21 | Missouri | 146 | 35 |
| 22 | Tennessee | 152 | 34 |
| 23 | Iowa | 123 | 31 |
| 24 | Alabama | 211 | 28 |
| 25 | New Hampshire* | 62 | 27 |
| 26 | Idaho* | 66 | 24 |
| 27 | Oklahoma | 93 | 23 |
| 28 | Wisconsin | 132 | 23 |
| 29 | Maine* | 93 | 22 |
| 30 | Maryland | 100 | 21 |
| 31 | New Mexico* | 34 | 20 |
| 32 | Alaska* | 77 | 18 |
| 33 | Rhode Island | 25 | 17 |
| 34 | New York | 361 | 14 |
| 35 | Arkansas | 108 | 13 |
| 36 | Arizona* | 46 | 11 |
| 37 | Kansas | 58 | 11 |
| 38 | Hawaii | 27 | 10 |
| 39 | Mississippi | 86 | 10 |
| 40 | West Virginia | 93 | 10 |
| 41 | Montana | 44 | 9 |
| 42 | Nevada | 10 | 7 |
| 43 | Delaware | 24 | 7 |
| 44 | South Dakota | 31 | 5 |
| 45 | District of Columbia* | 4 | 4 |
| 46 | Vermont | 34 | 4 |
| 47 | Utah | 34 | 2 |
| 48 | Kentucky | 130 | 2 |
| 49 | Georgia | 172 | 2 |
| 50 | North Dakota | 26 | 0 |
| 51 | Wyoming | 26 | 0 |
| Total | 6,621 | 1,640 |
* NPDES permit program run by U.S. Environmental Protection Agency.
** EWG is working with California to obtain more up-to-date information.
Source: Environmental Working Group. Compiled from EPA Permit Compliance System Data as of January 2000.