Public Water Systems
4,181 active water systems in OH.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| LICKING REGIONAL WATER DISTRICT | BALTIMORE, OH | 17,818 | 138 | Clean |
| NEW PHILADELPHIA CITY PWS | NEW PHILADELPHIA, OH | 17,410 | 24 | Clean |
| ERIE CO PERKINS DISTRICT | HURON, OH | 17,241 | 35 | Clean |
| FRANKLIN PUBLIC WATER SYSTEM | FRANKLIN, OH | 17,175 | 171 | Detected |
| NORWALK CITY PWS | NORWALK, OH | 17,068 | 45 | Detected |
| STEUBENVILLE, CITY OF | STEUBENVILLE, OH | 17,000 | 194 | Clean |
| MOUNT VERNON CITY PWS | MOUNT VERNON, OH | 16,990 | 13 | Clean |
| SALEM CITY | SALEM, OH | 16,850 | 63 | Clean |
| WRIGHT-PATTERSON AFB AREA A PWS | VANDALIA, OH | 16,551 | 32 | Detected |
| DEFIANCE CITY | DEFIANCE, OH | 16,494 | 386 | Detected |
| TUPPERS PLAINS/CHESTER WATER DISTRICT | LONG BOTTOM, OH | 16,087 | 96 | Clean |
| RAVENNA CITY PWS | RAVENNA, OH | 16,000 | 12 | Detected |
| JACKSON CO. WATER COMPANY-WTP | JACKSON, OH | 15,984 | 34 | Clean |
| AURORA CITY - CLEVELAND PWS | AURORA, OH | 15,852 | 16 | Clean |
| MONROE CITY PWS | MONROE, OH | 15,600 | 114 | Clean |
| PIKE WATER, INC.-PLANT PWS | WAVERLY, OH | 15,487 | 62 | Detected |
| FAIRFIELD COUNTY UTILITIES PWS | LANCASTER, OH | 15,486 | 4 | Detected |
| STREETSBORO CITY PWS | STREETSBORO, OH | 15,105 | 8 | Clean |
| INDIAN HILL CITY PWS | CINCINNATI, OH | 15,000 | 29 | Detected |
| MAUMEE CITY | MAUMEE, OH | 14,286 | 9 | Clean |
| BEXLEY CITY PWS | BEXLEY, OH | 14,250 | 15 | Detected |
| GIRARD CITY | GIRARD, OH | 14,122 | 23 | Detected |
| WASHINGTON COURT HOUSE PWS | WILLIAMSPORT, OH | 14,100 | 23 | Clean |
| JEFFERSON CO W AND S DISTRICT - M | STEUBENVILLE, OH | 13,983 | 49 | Detected |
| ASHTABULA COUNTY WATER SYSTEM | JEFFERSON, OH | 13,972 | 18 | Clean |
| CIRCLEVILLE CITY PWS | CIRCLEVILLE, OH | 13,927 | 36 | Detected |
| SCIOTO CO. REGIONAL WATER DISTRICT #1 | LUCASVILLE, OH | 13,820 | 56 | Detected |
| COSHOCTON PWS | COSHOCTON, OH | 13,537 | 69 | Clean |
| ENGLEWOOD CITY PWS | ENGLEWOOD, OH | 13,463 | 12 | Clean |
| FOSTORIA CITY | FOSTORIA, OH | 13,441 | 43 | Clean |
| DOVER CITY PWS | DOVER, OH | 13,253 | 99 | Clean |
| BELLEFONTAINE CITY PWS | BELLEFONTAINE, OH | 13,249 | 345 | Detected |
| GREENVILLE CITY PWS | GREENVILLE, OH | 13,227 | 31 | Detected |
| WARREN CO. SOCIALVILLE PWS | LEBANON, OH | 13,216 | 4 | Detected |
| BEDFORD CITY PWS | BEDFORD, OH | 13,149 | 8 | Clean |
| TRENTON CITY PWS | TRENTON, OH | 13,012 | 87 | Detected |
| WEST CARROLLTON CITY PWS | CAMDEN, OH | 12,910 | 7 | Clean |
| LOVELAND CITY PWS | LOVELAND, OH | 12,800 | 38 | Detected |
| EAST LIVERPOOL CITY | EAST LIVERPOOL, OH | 12,586 | 316 | Detected |
| BUCYRUS CITY | BUCYRUS, OH | 12,570 | 32 | Clean |
| CONNEAUT | CONNEAUT, OH | 12,538 | 48 | Clean |
| WILMINGTON CITY PWS | WILMINGTON, OH | 12,401 | 137 | Detected |
| AMHERST CITY PWS | AMHERST, OH | 11,797 | 9 | Clean |
| CELINA CITY | CELINA, OH | 11,682 | 451 | Detected |
| HARRISON CITY PWS | HARRISON, OH | 11,600 | 70 | Clean |
| URBANA CITY PWS | URBANA, OH | 11,428 | 174 | Detected |
| UH - CLEVELAND MEDICAL CENTER | CLEVELAND, OH | 11,395 | 8 | Detected |
| JEFFERSON WATER AND SEWER DISTRICT PWS | BLACKLICK, OH | 11,294 | 123 | Detected |
| IRONTON | IRONTON, OH | 11,129 | 92 | Detected |
| NORTHWEST REGIONAL WATER DISTRICT | MCDERMOTT, OH | 11,059 | 12 | Detected |