PFAS in drinking water, state by state
Share of each state's tested public water systems that averaged above at least one EPA PFAS limit at a sampling point. Final UCMR 5 data, August 2026.
| State | Systems tested | PFAS found | Above a limit | People affected |
|---|---|---|---|---|
| Alabama | 307 | 38% | 54 (18%) | 1.0 million |
| Alaska | 30 | 30% | 2 (7%) | 226,251 |
| American Samoa | 1 | 100% | 0 (0%) | - |
| Arizona | 152 | 38% | 23 (15%) | 857,620 |
| Arkansas | 172 | 6% | 0 (0%) | - |
| California | 707 | 34% | 132 (19%) | 8.9 million |
| Colorado | 165 | 24% | 4 (2%) | 101,207 |
| Connecticut | 63 | 63% | 16 (25%) | 696,986 |
| Delaware | 36 | 47% | 12 (33%) | 633,592 |
| District of Columbia | 3 | 100% | 0 (0%) | - |
| Florida | 409 | 48% | 132 (32%) | 10 million |
| Georgia | 256 | 32% | 29 (11%) | 1.4 million |
| Guam | 5 | 60% | 1 (20%) | 139,207 |
| Hawaii | 45 | 4% | 0 (0%) | - |
| Idaho | 61 | 15% | 2 (3%) | 21,500 |
| Illinois | 487 | 26% | 15 (3%) | 365,115 |
| Indiana | 230 | 24% | 5 (2%) | 151,021 |
| Iowa | 152 | 21% | 2 (1%) | 155,295 |
| Kansas | 103 | 34% | 4 (4%) | 84,041 |
| Kentucky | 231 | 38% | 9 (4%) | 199,762 |
| Louisiana | 268 | 18% | 1 (0%) | 6,354 |
| Maine | 41 | 24% | 4 (10%) | 51,031 |
| Maryland | 83 | 36% | 15 (18%) | 162,517 |
| Massachusetts | 263 | 55% | 80 (30%) | 1.4 million |
| Michigan | 319 | 14% | 5 (2%) | 219,330 |
| Minnesota | 196 | 45% | 11 (6%) | 288,185 |
| Mississippi | 239 | 4% | 5 (2%) | 84,633 |
| Missouri | 232 | 31% | 6 (3%) | 73,399 |
| Montana | 45 | 11% | 0 (0%) | - |
| Navajo Nation | 13 | 15% | 0 (0%) | - |
| Nebraska | 53 | 13% | 3 (6%) | 83,158 |
| Nevada | 59 | 17% | 3 (5%) | 488,064 |
| New Hampshire | 51 | 35% | 9 (18%) | 222,628 |
| New Jersey | 266 | 65% | 121 (45%) | 5.2 million |
| New Mexico | 73 | 15% | 1 (1%) | 2,286 |
| New York | 334 | 30% | 34 (10%) | 1.9 million |
| North Carolina | 291 | 50% | 76 (26%) | 2.7 million |
| North Dakota | 38 | 18% | 0 (0%) | - |
| Northern Mariana Islands | 2 | 50% | 1 (50%) | 48,524 |
| Ohio | 347 | 41% | 39 (11%) | 1.5 million |
| Oklahoma | 166 | 41% | 9 (5%) | 318,153 |
| Oregon | 127 | 14% | 10 (8%) | 226,333 |
| Pennsylvania | 390 | 45% | 82 (21%) | 4.2 million |
| Puerto Rico | 99 | 39% | 17 (17%) | 1.5 million |
| Rhode Island | 29 | 52% | 8 (28%) | 220,864 |
| South Carolina | 165 | 55% | 57 (35%) | 2.2 million |
| South Dakota | 49 | 14% | 1 (2%) | 4,100 |
| Tennessee | 277 | 31% | 18 (6%) | 364,778 |
| Texas | 1154 | 54% | 30 (3%) | 2.9 million |
| U.S. Virgin Islands | 3 | 33% | 1 (33%) | 550 |
| Utah | 129 | 12% | 3 (2%) | 398,587 |
| Vermont | 38 | 8% | 0 (0%) | - |
| Virginia | 171 | 32% | 13 (8%) | 1.8 million |
| Washington | 248 | 27% | 24 (10%) | 1.3 million |
| West Virginia | 103 | 33% | 12 (12%) | 111,946 |
| Wisconsin | 202 | 26% | 20 (10%) | 244,420 |
| Wyoming | 33 | 9% | 1 (3%) | 10,330 |
| Tribal Systems, EPA Region 1 | 2 | 50% | 1 (50%) | 22,171 |
| Tribal Systems, EPA Region 2 | 2 | 0% | 0 (0%) | - |
| Tribal Systems, EPA Region 4 | 2 | 0% | 0 (0%) | - |
| Tribal Systems, EPA Region 5 | 13 | 8% | 0 (0%) | - |
| Tribal Systems, EPA Region 6 | 18 | 11% | 0 (0%) | - |
| Tribal Systems, EPA Region 7 | 1 | 0% | 0 (0%) | - |
| Tribal Systems, EPA Region 8 | 13 | 8% | 0 (0%) | - |
| Tribal Systems, EPA Region 9 | 41 | 20% | 2 (5%) | 21,283 |
| Tribal Systems, EPA Region 10 | 10 | 0% | 0 (0%) | - |