Worst Water Quality in America
The 100 lowest-scoring cities out of 15,744 tested. Ranked by overall water quality score (violations, lead, PFAS, and compliance).
Worst Best
| # | City | State | Grade | Score | Score | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Dayton 151K served | OH | F | 19.8 | 477 | Health PFAS Lead Unresolved | |
| 2 | Dallas 4K served | PA | F | 22.2 | 1190 | Health PFAS Lead Unresolved | |
| 3 | Georgetown 10K served | DE | F | 24 | 156 | Health PFAS Unresolved | |
| 4 | Lititz 22K served | PA | F | 24.2 | 763 | Health Lead Unresolved | |
| 5 | Honey Brook 4K served | PA | F | 25 | 211 | Health Lead Unresolved | |
| 6 | Chenango (T) 10K served | NY | F | 25.2 | 181 | Health PFAS Lead Unresolved | |
| 7 | Delight 2K served | AR | F | 26 | 54 | Health Lead Unresolved | |
| 8 | Somerset 13K served | PA | F | 26.2 | 868 | Health Lead Unresolved | |
| 9 | Cresson 906 served | TX | F | 27 | 109 | Health Lead Unresolved | |
| 10 | Moscow 2K served | PA | F | 27 | 6011 | Health Lead Unresolved | |
| 11 | Moultonborough 3K served | NH | F | 27 | 627 | Health Lead Unresolved | |
| 12 | Mount Gretna 1K served | PA | F | 27 | 205 | Health Lead Unresolved | |
| 13 | Ramah, Pinehill 1K served | NM | F | 27.1 | 333 | Health Lead Unresolved | |
| 14 | Thornton 1K served | NH | F | 27.1 | 355 | Health Lead Unresolved | |
| 15 | Olyphant 706 served | PA | F | 27.2 | 551 | Health Lead Unresolved | |
| 16 | Zavalla 1K served | TX | F | 27.5 | 290 | Health Lead Unresolved | |
| 17 | Houston 5.9M served | TX | F | 27.8 | 11018 | Health PFAS Unresolved | |
| 18 | Eugene 180K served | OR | F | 28 | 2141 | Health Lead Unresolved | |
| 19 | Lockport 26K served | IL | F | 28 | 164 | Health Lead Unresolved | |
| 20 | Loudon 948 served | NH | F | 28 | 374 | Health Lead Unresolved | |
| 21 | New Hampton 666 served | NH | F | 28 | 133 | Health Lead Unresolved | |
| 22 | Rio Grande 72K served | PR | F | 28 | 746 | Health Lead Unresolved | |
| 23 | Roulette 1K served | PA | F | 28 | 911 | Health Lead Unresolved | |
| 24 | San Jose 3.2M served | CA | F | 28 | 556 | Health PFAS Unresolved | |
| 25 | Frankston 6K served | TX | F | 28.1 | 73 | Health Lead Unresolved | |
| 26 | Grand Blanc 30K served | MI | F | 28.2 | 130 | Health Lead Unresolved | |
| 27 | Huntsville 102K served | TX | F | 28.4 | 433 | Health PFAS Unresolved | |
| 28 | Milford 3K served | PA | F | 28.5 | 1335 | Health Lead Unresolved | |
| 29 | Millville 969 served | PA | F | 28.5 | 323 | Health Lead Unresolved | |
| 30 | Exeter 1K served | RI | F | 29 | 226 | Health Lead Unresolved | |
| 31 | Hopkinton 2K served | NH | F | 29 | 119 | Health Lead Unresolved | |
| 32 | Indiana 15K served | PA | F | 29 | 1022 | Health Lead Unresolved | |
| 33 | Lykens 3K served | PA | F | 29 | 298 | Health Lead Unresolved | |
| 34 | Mercersburg 3K served | PA | F | 29 | 421 | Health Lead Unresolved | |
| 35 | Mulino 790 served | OR | F | 29 | 217 | Health Lead Unresolved | |
| 36 | Nesquehoning 3K served | PA | F | 29 | 222 | Health Lead Unresolved | |
| 37 | Ossipee 2K served | NH | F | 29 | 791 | Health Lead Unresolved | |
| 38 | Pima 5K served | AZ | F | 29 | 324 | Health Lead Unresolved | |
| 39 | Warren 4K served | VT | F | 29 | 383 | Health Lead Unresolved | |
| 40 | Mayaguez 153K served | PR | F | 29.1 | 1292 | Health Lead Unresolved | |
| 41 | Conneaut Lake 1K served | PA | F | 29.2 | 963 | Health Lead Unresolved | |
| 42 | Meshoppen 563 served | PA | F | 29.2 | 311 | Health Lead Unresolved | |
| 43 | Rocky Ford 6K served | CO | F | 29.2 | 726 | Health PFAS Lead Unresolved | |
| 44 | Reno 458K served | NV | F | 29.3 | 1269 | Health PFAS Unresolved | |
| 45 | Allentown 199K served | PA | F | 29.4 | 981 | Health PFAS Unresolved | |
| 46 | Medford 107K served | OR | F | 29.4 | 604 | Health Lead Unresolved | |
| 47 | Mifflintown 5K served | PA | F | 29.5 | 276 | Health Lead Unresolved | |
| 48 | Hays 23K served | KS | F | 29.8 | 492 | Health Unresolved | |
| 49 | Belmont 4K served | NH | F | 30 | 444 | Health Lead Unresolved | |
| 50 | Berwick 631 served | PA | F | 30 | 883 | Health Lead Unresolved | |
| 51 | Black Canyon City 3K served | AZ | F | 30 | 510 | Health Lead Unresolved | |
| 52 | Campton 3K served | NH | F | 30 | 532 | Health Lead Unresolved | |
| 53 | Johnsonburg 2K served | PA | F | 30 | 406 | Health Lead Unresolved | |
| 54 | Landisburg 919 served | PA | F | 30 | 1916 | Health Lead Unresolved | |
| 55 | Loganton 952 served | PA | F | 30 | 1269 | Health Lead Unresolved | |
| 56 | Mapleton 570 served | PA | F | 30 | 257 | Health Lead Unresolved | |
| 57 | Parker 1K served | PA | F | 30 | 513 | Health Lead Unresolved | |
| 58 | Plaistow 2K served | NH | F | 30 | 382 | Health Lead Unresolved | |
| 59 | Polk 1K served | PA | F | 30 | 300 | Health Lead Unresolved | |
| 60 | Roseburg 46K served | OR | F | 30 | 569 | Health Lead Unresolved | |
| 61 | Shinglehouse 1K served | PA | F | 30 | 226 | Lead Unresolved | |
| 62 | Smethport 2K served | PA | F | 30 | 467 | Health Lead Unresolved | |
| 63 | Tannersville 739 served | PA | F | 30 | 326 | Health Lead Unresolved | |
| 64 | Fayetteville 315K served | NC | F | 30.2 | 802 | Health PFAS Unresolved | |
| 65 | Walnutport 4K served | PA | F | 30.5 | 781 | Health Lead Unresolved | |
| 66 | North Wales 97K served | PA | F | 30.7 | 1360 | Health PFAS Unresolved | |
| 67 | Raleigh 676K served | NC | F | 30.7 | 3207 | Health PFAS Unresolved | |
| 68 | Bath 4K served | PA | F | 30.8 | 193 | Health Lead Unresolved | |
| 69 | Cheyenne 83K served | WY | F | 30.8 | 515 | Health Unresolved | |
| 70 | Annville 4K served | PA | F | 31 | 551 | Health Lead Unresolved | |
| 71 | Barrington 2K served | NH | F | 31 | 619 | Health Lead Unresolved | |
| 72 | Beech Creek 2K served | PA | F | 31 | 243 | Lead Unresolved | |
| 73 | Cochranton 1K served | PA | F | 31 | 471 | Health Lead Unresolved | |
| 74 | Confluence 645 served | PA | F | 31 | 298 | Health Lead Unresolved | |
| 75 | Deer 3K served | AR | F | 31 | 278 | Health Lead Unresolved | |
| 76 | Franklin 11K served | NC | F | 31 | 462 | Health Lead Unresolved | |
| 77 | Gilford 4K served | NH | F | 31 | 1030 | Health Lead Unresolved | |
| 78 | Herkimer (V) 9K served | NY | F | 31 | 178 | Health Lead Unresolved | |
| 79 | Hotchkiss 4K served | CO | F | 31 | 957 | Health Lead Unresolved | |
| 80 | Hughesville 3K served | PA | F | 31 | 288 | Health Lead Unresolved | |
| 81 | Lemoyne 2K served | PA | F | 31 | 480 | Health Lead Unresolved | |
| 82 | Maxwell 601 served | NM | F | 31 | 89 | Health Lead Unresolved | |
| 83 | New Hope 2K served | PA | F | 31 | 451 | Health Lead Unresolved | |
| 84 | Newport 3K served | PA | F | 31 | 721 | Health Lead Unresolved | |
| 85 | Penns Creek 725 served | PA | F | 31 | 800 | Health Lead Unresolved | |
| 86 | Ratliff City 2K served | OK | F | 31 | 57 | Health Lead Unresolved | |
| 87 | Saylorsburg 803 served | PA | F | 31 | 931 | Health Lead Unresolved | |
| 88 | Stroudsburg 1K served | PA | F | 31 | 599 | Health Lead Unresolved | |
| 89 | La Crosse 56K served | WI | F | 31.1 | 318 | Health PFAS Unresolved | |
| 90 | Millersview 4K served | TX | F | 31.1 | 313 | Health Lead Unresolved | |
| 91 | Austin 1.8M served | TX | F | 31.2 | 9527 | Health PFAS Unresolved | |
| 92 | Galeton 1K served | PA | F | 31.2 | 370 | Health Lead Unresolved | |
| 93 | Sacramento 1.2M served | CA | F | 31.2 | 1263 | Health PFAS Unresolved | |
| 94 | New Port Richey 301K served | FL | F | 31.8 | 412 | Health PFAS Unresolved | |
| 95 | Gallup 22K served | NM | F | 31.9 | 396 | Health Unresolved | |
| 96 | Killeen 159K served | TX | F | 31.9 | 85 | Health PFAS Unresolved | |
| 97 | Butler 684 served | PA | F | 32 | 422 | Health Lead Unresolved | |
| 98 | Delta Junction 2K served | AK | F | 32 | 606 | Health Lead Unresolved | |
| 99 | Duncannon 3K served | PA | F | 32 | 740 | Health Lead Unresolved | |
| 100 | Gray 800 served | PA | F | 32 | 604 | Health Lead Unresolved |