Browse Water Systems
434,040 public water systems.
Public Water Systems Database
Browse 434,040 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 |
|---|---|---|---|---|
| DEL-CO WATER CO/ALUM CR.PLANT | OH2100221 | Ohio | Community | 29,928 |
| DEL-CO WATER/OLENTANGY PLANT | OH2100211 | Ohio | Community | 29,928 |
| CLACKAMAS RIVER WATER | OR4100187 | Oregon | Community | 29,918 |
| NORWOOD WATER DEPT. (MWRA) | MA4220000 | Massachusetts | Community | 29,909 |
| WHEELING | WV3303516 | West Virginia | Community | 29,899 |
| MAKAWAO | HI0000213 | Hawaii | Community | 29,868 |
| JONAH WATER SUD | TX2460022 | Texas | Community | 29,861 |
| CALIF STATE POLYTECHNICAL UNIV - POMONA | CA1910022 | California | Community | 29,854 |
| FREEHOLD TWP WATER DEPT | NJ1316001 | New Jersey | Community | 29,831 |
| WINCHESTER MUNICIPAL UTILITIES | KY0250473 | Kentucky | Community | 29,823 |
| UPPER SMITH RIVER WATER SUPPLY | VA5089852 | Community | 29,721 | |
| EJ WATER COOPERATIVE | IL0790010 | Illinois | Community | 29,720 |
| CITY OF CONVERSE | TX0150047 | Texas | Community | 29,709 |
| SOMERSET WATER SERVICE | KY1000403 | Kentucky | Community | 29,700 |
| MADISON HEIGHTS | MI0004000 | Michigan | Community | 29,694 |
| CITY OF FORNEY | TX1290002 | Texas | Community | 29,692 |
| KENT CITY PWS | OH6701812 | Ohio | Community | 29,662 |
| OAK PARK | MI0004880 | Michigan | Community | 29,654 |
| CHEROKEE MD | CO0121125 | Colorado | Community | 29,610 |
| CITY OF GREENVILLE | MS0760004 | Mississippi | Community | 29,602 |
| MATTAPOISETT RIVER VALLEY W.D. | MA4173001 | Massachusetts | Community | 29,600 |
| REGIONAL WATER AUTHORITY-ANSONIA | CT0020021 | Connecticut | Community | 29,600 |
| SAN JUAN WATER DISTRICT | CA3410021 | California | Community | 29,598 |
| NORTH KONA | HI0000131 | Hawaii | Community | 29,581 |
| CITY OF HUTTO | TX2460007 | Texas | Community | 29,580 |
| FOREST GLEN RESORT-CABIN #2 | MI7720293 | Michigan | Transient Non-Community | 29,577 |
| NORTHAMPTON WATER DIVISION | MA1214000 | Massachusetts | Community | 29,571 |
| WELLESLEY WATER DIVISION | MA3317000 | Massachusetts | Community | 29,550 |
| CITY OF EAST PALO ALTO | CA4110024 | California | Community | 29,519 |
| ARLINGTON CITY OF | WA5302950 | Washington | Community | 29,508 |
| NUTLEY WATER DEPT | NJ0716001 | New Jersey | Community | 29,500 |
| COLLINSVILLE | IL1194280 | Illinois | Community | 29,500 |
| MARLBORO TOWNSHIP WATER UTILITY DIVISION | NJ1328002 | New Jersey | Community | 29,480 |
| CITY OF ATWATER | CA2410001 | California | Community | 29,479 |
| NORTH RIDGEVILLE CITY PWS | OH4700803 | Ohio | Community | 29,465 |
| ITHACA CITY | NY5404416 | New York | Community | 29,457 |
| WOODBURN, CITY OF | OR4100959 | Oregon | Community | 29,455 |
| MIFFLIN CNTY MUNI AUTH | PA4440010 | Pennsylvania | Community | 29,432 |
| OSWEGO CITY | NY3704361 | New York | Community | 29,400 |
| VEOLIA WATER PA INC BLOOMSBURG | PA4190008 | Pennsylvania | Community | 29,382 |
| ZANESVILLE PWS | OH6002712 | Ohio | Community | 29,381 |
| ALBERTVILLE, MUNICIPAL UB OF THE CITY OF | AL0000933 | Alabama | Community | 29,367 |
| FLORENCE WATER & SEWER | KY0080135 | Kentucky | Community | 29,351 |
| NILES | IL0312010 | Illinois | Community | 29,350 |
| CITY OF FATE | TX1990006 | Texas | Community | 29,285 |
| STOUGHTON WATER DEPARTMENT | MA4285000 | Massachusetts | Community | 29,281 |
| CITY CORPORATION | AR0000446 | Arkansas | Community | 29,260 |
| HUBER HEIGHTS-PLANT #1 | OH5702012 | Ohio | Community | 29,250 |
| ST. SIMONS ISLAND | GA1270001 | Georgia | Community | 29,249 |
| CITY OF VICKSBURG | MS0750010 | Mississippi | Community | 29,238 |