Public Water Systems
4,181 active water systems in OH.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| GALLIPOLIS PWS | GALLIPOLIS, OH | 7,134 | 4 | Detected |
| CORTLAND CITY PWS | CORTLAND, OH | 7,105 | 130 | Detected |
| DELPHOS CITY | DELPHOS, OH | 7,101 | 165 | Clean |
| AQUA OHIO - BLACKLICK | WESTERVILLE, OH | 7,100 | 19 | Clean |
| WILLARD CITY | WILLARD, OH | 7,099 | 10 | Clean |
| WELLSTON CITY PWS | WELLSTON, OH | 7,000 | 324 | Detected |
| UNION CITY PWS | UNION, OH | 7,000 | 35 | Detected |
| MARTINS FERRY PUBLIC WATER SYSTEM | MARTINS FERRY, OH | 6,980 | 27 | Detected |
| AQUA OHIO - HUBER RIDGE PWS | WESTERVILLE, OH | 6,950 | 24 | Clean |
| HURON CITY | HURON, OH | 6,893 | 61 | Clean |
| COLUMBIANA CITY PWS | COLUMBIANA, OH | 6,727 | 8 | Detected |
| LOGAN, CITY OF | LOGAN, OH | 6,704 | 59 | Clean |
| MILFORD CITY PWS | MILFORD, OH | 6,700 | 628 | Detected |
| UPPER SANDUSKY CITY | UPPER SANDUSKY, OH | 6,698 | 71 | Clean |
| STARK COUNTY WATER DISTRICT | CANTON, OH | 6,690 | 14 | Detected |
| I-71 AND SR-35 PWS | WASHINGTON COURT HOUSE, OH | 6,685 | 193 | Clean |
| LEADING CREEK CONSERVANCY DISTRICT | RUTLAND, OH | 6,663 | 65 | Detected |
| NELSONVILLE PWS | NELSONVILLE, OH | 6,656 | 558 | Detected |
| ONTARIO CITY | ONTARIO, OH | 6,656 | 67 | Detected |
| HILLSBORO CITY | HILLSBORO, OH | 6,650 | 66 | Clean |
| MOUNT ORAB VILLAGE PWS | MOUNT ORAB, OH | 6,607 | 98 | Detected |
| TCMSD-WILKSHIRE HILLS PWS | BOLIVAR, OH | 6,587 | 86 | Clean |
| SOUTH LEBANON CITY PWS | SOUTH LEBANON, OH | 6,541 | 100 | Clean |
| MAYSVILLE REGIONAL WATER | WHITE COTTAGE, OH | 6,540 | 406 | Detected |
| BARNESVILLE | BARNESVILLE, OH | 6,500 | 70 | Detected |
| WATERVILLE CITY | WATERVILLE, OH | 6,500 | 11 | Detected |
| RITTMAN CITY PWS | RITTMAN, OH | 6,491 | 87 | Detected |
| SCIOTO WATER INC.-SUGAR CAMP | FRANKLIN FURNACE, OH | 6,458 | 26 | Detected |
| BELPRE CITY PWS | BELPRE, OH | 6,441 | 135 | Detected |
| NORTHERN OHIO RURAL WATER - NW DISTRICT | NORWALK, OH | 6,409 | 4 | Clean |
| TRUMBULL CO. - HOWLAND TWP PWS | VIENNA, OH | 6,396 | 5 | Detected |
| CLYDE CITY | CLYDE, OH | 6,325 | 21 | Detected |
| NEWTON FALLS CITY | NEWTON FALLS, OH | 6,109 | 130 | Detected |
| SEBRING VILLAGE PWS | SEBRING, OH | 6,058 | 331 | Clean |
| PORT CLINTON CITY | PORT CLINTON, OH | 6,056 | 17 | Clean |
| ANDOVER-CAMPLANDS WATER | ANDOVER, OH | 6,009 | 344 | Detected |
| CLEVES VILLAGE PWS | CLEVES, OH | 6,000 | 15 | Clean |
| GRANVILLE, VILLAGE OF | GRANVILLE, OH | 5,946 | 7 | Clean |
| GENEVA CITY PWS | GENEVA, OH | 5,924 | 11 | Clean |
| BROOKVILLE MUNICIPALITY PWS | BROOKVILLE, OH | 5,923 | 54 | Detected |
| NEW CARLISLE CITY PWS | NEW CARLISLE, OH | 5,800 | 31 | Detected |
| GERMANTOWN CITY PWS | GERMANTOWN, OH | 5,796 | 371 | Clean |
| TORONTO PWS | TORONTO, OH | 5,676 | 40 | Detected |
| ARCHBOLD VILLAGE | ARCHBOLD, OH | 5,586 | 98 | Clean |
| SUNDAY CREEK VALLEY WATER PWS | MILLFIELD, OH | 5,451 | 76 | Clean |
| ADA VILLAGE | ADA, OH | 5,334 | 25 | Detected |
| CANAL FULTON CITY PWS | CANAL FULTON, OH | 5,323 | 88 | Detected |
| CHARDON CITY PWS | CHARDON, OH | 5,247 | 35 | Detected |
| NORTHERN OHIO RURAL WATER-SOUTH DISTRICT | NORWALK, OH | 5,226 | 30 | Detected |
| JOHNSTOWN CITY PWS | JOHNSTOWN, OH | 5,200 | 103 | Detected |