Browse Water Systems
16,110 public water systems in OH.
Public Water Systems Database
Browse 16,110 EPA-regulated public water systems with identifiers, population served, and water source type. Use the filters below to narrow results by state, system type, or name.
| System Name | PWSID | State | Type | Population Served |
|---|---|---|---|---|
| INDIAN HILL CITY PWS | OH3101112 | Ohio | Community | 15,000 |
| VANDALIA CITY PWS | OH5702603 | Ohio | Community | 15,000 |
| ASHTABULA COUNTY WATER SYSTEM | OH0400803 | Ohio | Community | 14,757 |
| MAUMEE CITY | OH4800603 | Ohio | Community | 14,286 |
| BEXLEY CITY PWS | OH2500103 | Ohio | Community | 14,250 |
| GIRARD CITY | OH7801103 | Ohio | Community | 14,122 |
| WASHINGTON COURT HOUSE PWS | OH2400714 | Ohio | Community | 14,100 |
| JEFFERSON CO W AND S DISTRICT - M | OH4101103 | Ohio | Community | 13,983 |
| CIRCLEVILLE CITY PWS | OH6500412 | Ohio | Community | 13,927 |
| SCIOTO CO. REGIONAL WATER DISTRICT #1 | OH7300212 | Ohio | Community | 13,820 |
| COSHOCTON PWS | OH1600012 | Ohio | Community | 13,537 |
| ENGLEWOOD CITY PWS | OH5700812 | Ohio | Community | 13,463 |
| FOSTORIA CITY | OH7400411 | Ohio | Community | 13,441 |
| DOVER CITY PWS | OH7900412 | Ohio | Community | 13,253 |
| BELLEFONTAINE CITY PWS | OH4600112 | Ohio | Community | 13,249 |
| GREENVILLE CITY PWS | OH1900714 | Ohio | Community | 13,227 |
| BEDFORD CITY PWS | OH1800003 | Ohio | Community | 13,149 |
| TRENTON CITY PWS | OH0903012 | Ohio | Community | 13,012 |
| WATER SUPT,THIMBLE CREEK SD | OH5701703 | Ohio | Community | 12,856 |
| LOVELAND CITY PWS | OH1300812 | Ohio | Community | 12,800 |
| EAST LIVERPOOL CITY | OH1500811 | Ohio | Community | 12,586 |
| BUCYRUS CITY | OH1700011 | Ohio | Community | 12,570 |
| CONNEAUT | OH0400411 | Ohio | Community | 12,538 |
| WILMINGTON CITY PWS | OH1401211 | Ohio | Community | 12,401 |
| AMHERST CITY PWS | OH4700003 | Ohio | Community | 11,797 |
| WATER SUPT,MEADOWDALE SWD. | OH5701403 | Ohio | Community | 11,704 |
| FRANKLIN PUBLIC WATER SYSTEM | OH8300412 | Ohio | Community | 11,690 |
| CELINA, CITY OF | OH5400011 | Ohio | Community | 11,682 |
| SUPT,CIRCLEVILLE WATER DEPT. | OH6500414 | Ohio | Community | 11,682 |
| HARRISON CITY PWS | OH3100812 | Ohio | Community | 11,600 |
| URBANA CITY PWS | OH1101212 | Ohio | Community | 11,428 |
| UH - CLEVELAND MEDICAL CENTER | OH1841113 | Ohio | Non-Transient Non-Community | 11,395 |
| JEFFERSON WATER AND SEWER DISTRICT PWS | OH2504012 | Ohio | Community | 11,294 |
| SAN.ENGR,EAST WATER SUBDIST. | OH4302916 | Ohio | Community | 11,200 |
| IRONTON | OH4400711 | Ohio | Community | 11,129 |
| NORTHWEST REGIONAL WATER DISTRICT | OH7300003 | Ohio | Community | 11,059 |
| HDMA - BENTON RD PWS | OH8035512 | Ohio | Non-Transient Non-Community | 11,025 |
| MASON, CITY OF - SOUTH | OH8304312 | Ohio | Community | 11,000 |
| MASON, CITY OF | OH8300812 | Ohio | Community | 11,000 |
| WAPAKONETA CITY PWS | OH0600712 | Ohio | Community | 11,000 |
| VAN WERT CITY | OH8100611 | Ohio | Community | 10,846 |
| VERMILION CITY | OH2201511 | Ohio | Community | 10,594 |
| CAMBRIDGE, CITY OF | OH3000111 | Ohio | Community | 10,520 |
| GALION CITY | OH1700211 | Ohio | Community | 10,453 |
| CITY OF HEATH PWS | OH4500912 | Ohio | Community | 10,310 |
| BUCKEYE WATER DISTRICT - OHIO RIVER | OH1502911 | Ohio | Community | 10,300 |
| MID-OHIO WSD - CHRISMAN AVENUE WTP | OH4900712 | Ohio | Community | 10,256 |
| HAMILTON/NORTH WATER PLANT | OH0901012 | Ohio | Community | 10,080 |
| EARNHART HILL WATER DISTRICT PWS | OH6500812 | Ohio | Community | 10,057 |
| WILLIAM ARTER,SECY,HARTFORD FR | OH4552212 | Ohio | Transient Non-Community | 10,000 |