Iowa utilities 101 to 156.
Each serves 37 to 5,015 people, as it reports to EPA. Your ZIP code finds yours faster.
101 to 156 of 156, by people served
| Utility | Based in | Serves | Regulated PFAS | Health-based violations since 2016 |
|---|---|---|---|---|
| Sergeant Bluff Water Supply | Sergeant Bluff | 5,015 | None found | 0 |
| Xenia RWD (Boone) | Luther | 4,975 | None found | 0 |
| Vinton Municipal Water Dept | Vinton | 4,938 | None found | 0 |
| Shenandoah Water Dept | Shenandoah | 4,925 | None found | 0 |
| Humboldt Municipal Water Dept | Humboldt | 4,792 | None found | 0 |
| Sac & Fox (Meskwaki) in Iowa | Tama | 4,765 | None found | 0 |
| Camanche Water Supply | Camanche | 4,570 | None found | 0 |
| Evansdale Water Works | Evansdale | 4,561 | None found | 0 |
| Mount Vernon Water Supply | Mount Vernon | 4,527 | None found | 0 |
| Dyersville Municipal Water Co | Dyersville | 4,477 | None found | 3 |
| Anamosa Municipal Water Supply | Anamosa | 4,457 | None found | 0 |
| Chariton Municipal Water Works | Chariton | 4,381 | None found | 20 |
| Clarinda Water Plant | Clarinda | 4,372 | None found | 0 |
| Hampton Muni Water Works | Hampton | 4,337 | None found | 0 |
| Forest City Water Supply | Forest City | 4,285 | None found | 0 |
| Huxley Waterworks Dept | Huxley | 4,244 | None found | 0 |
| Jefferson Water Department | Jefferson | 4,182 | None found | 0 |
| Carlisle Water Supply | Carlisle | 4,170 | PFHxS | 0 |
| Regional Water | Avoca | 4,132 | None found | 1 |
| Sirwa #3 (Osceola) | Osceola | 4,080 | None found | 0 |
| Rock Valley Water Supply | Rock Valley | 4,059 | None found | 0 |
| Monticello Water Supply | Monticello | 4,040 | None found | 0 |
| West Liberty Water Utility | West Liberty | 3,938 | None found | 0 |
| Cresco Waterworks | Cresco | 3,913 | None found | 0 |
| Waukon Water Department | Waukon | 3,827 | None found | 0 |
| Carter Lake Water District | Carter Lake | 3,791 | None found | 0 |
| Emmetsburg Municipal Water Department | Emmetsburg | 3,733 | None found | 0 |
| West Burlington Muni. Water Supply | West Burlington | 3,728 | PFOA, PFBS | 0 |
| Albia Municipal Water Works | Albia | 3,721 | None found | 0 |
| Osage Municipal Water Supply | Osage | 3,637 | PFOS, PFHxS | 0 |
| Eagle Grove Water Supply | Eagle Grove | 3,601 | None found | 0 |
| West Central RWA - Nish System | Manning | 3,573 | None found | 0 |
| Southwest Reg Water District (Red Oak) | Red Oak | 3,500 | Not sampled | 0 |
| New Hampton Water Supply | New Hampton | 3,494 | None found | 0 |
| Xenia RWD (Woodward) | Woodward | 3,465 | None found | 0 |
| Milford Municipal Utilities | Milford | 3,431 | Not sampled | 1 |
| Rural Water System #1 | Hospers | 3,428 | None found | 1 |
| Story City Water Dept | Story City | 3,357 | None found | 0 |
| Williamsburg Public Water Supply | Williamsburg | 3,345 | Not sampled | 0 |
| Cherokee RWS - Cherokee Subsystem | Cherokee | 3,315 | Not sampled | 0 |
| Onawa Municipal Water Plant | Onawa | 2,906 | None found | 0 |
| Belle Plaine Water Dept | Belle Plaine | 2,380 | None found | 0 |
| West Central RWA - Boyer System | Wall Lake | 1,715 | None found | 0 |
| Urban Bluffs - North | Council Bluffs | 1,558 | PFBS | 0 |
| Lyon - Sioux RWS - Big Sioux | Rock Rapids | 1,530 | None found | 0 |
| Clarksville Water Supply | Clarksville | 1,254 | None found | 0 |
| Melcher - Dallas Water Supply | Melcher - Dallas | 1,213 | None found | 0 |
| Anita Municipal Utilities | Anita | 972 | None found | 0 |
| Cambridge Water Supply | Cambridge | 832 | PFBS | 0 |
| Okoboji Water Supply | Okoboji | 776 | None found | 0 |
| Bancroft Water Supply | Bancroft | 711 | None found | 0 |
| Clermont Water Supply | Clermont | 586 | None found | 0 |
| Iowa City MHP LLC | Iowa City | 280 | None found | 0 |
| Portsmouth Water Supply | Portsmouth | 189 | None found | 0 |
| Garden Grove Water Supply | Garden Grove | 179 | None found | 0 |
| Riverview Subdivision | Montpelier | 37 | None found | 0 |
Utilities EPA sampled under UCMR 5, plus any other community system serving 3,300 people or more. Smaller systems appear in ZIP code results. People served is what each utility reports to EPA. Data: EPA SDWIS 2026 Q2 and UCMR 5.