Browse Water Systems
433,698 public water systems.
Public Water Systems Database
Browse 433,698 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 |
|---|---|---|---|---|
| CINCINNATI PUBLIC WATER SYSTEM | OH3102612 | Ohio | Community | 750,200 |
| EL PASO WATER UTILITIES PUBLIC SERVICE B | TX0710002 | Texas | Community | 747,168 |
| DEKALB COUNTY | GA0890001 | Georgia | Community | 743,000 |
| CITY OF TAMPA WATER DEPARTMENT | FL6290327 | Florida | Community | 733,886 |
| TUCSON CITY OF | AZ0410112 | Arizona | Community | 732,906 |
| COBB COUNTY | GA0670003 | Georgia | Community | 695,000 |
| CINCINNATI, CITY OF-MILLER | OH3100411 | Ohio | Community | 686,400 |
| PA AMER WATER CO-PITTSBURGH | PA5020039 | Pennsylvania | Community | 686,000 |
| BOSTON WATER AND SEWER COMMISSION (MWRA) | MA3035000 | Massachusetts | Community | 675,647 |
| CONSOLIDATED COCA-COLA-BOT CO | PA4110804 | Pennsylvania | Transient Non-Community | 670,000 |
| KENTUCKY-AMERICAN WATER CO | KY0340250 | Kentucky | Community | 669,042 |
| EASTERN MUNICIPAL WD | CA3310009 | California | Community | 666,581 |
| PORTLAND WATER BUREAU | OR4100657 | Oregon | Community | 666,200 |
| METROPOLITAN UTILITIES DISTRICT | NE3105507 | Nebraska | Community | 660,000 |
| MEMPHIS LIGHT, GAS, & WATER | TN0000450 | Tennessee | Community | 659,500 |
| OKLAHOMA CITY | OK1020902 | Oklahoma | Community | 644,000 |
| RALEIGH, CITY OF | NC0392010 | North Carolina | Community | 640,000 |
| DETROIT CITY OF | MI0001800 | Michigan | Community | 633,218 |
| D.C. WATER AND SEWER AUTHORITY | DC0000002 | Washington D.C. | Community | 632,323 |
| HNL-WINDWARD-PEARL HARBOR | HI0000331 | Hawaii | Community | 631,389 |
| MILWAUKEE WATERWORKS | WI2410100 | Wisconsin | Community | 626,000 |
| PALM BEACH COUNTY WATER UTILITIES | FL4504393 | Florida | Community | 619,435 |
| NJ AMERICAN WATER - RARITAN | NJ2004002 | New Jersey | Community | 615,430 |
| BATON ROUGE WATER COMPANY | LA1033005 | Louisiana | Community | 596,844 |
| CENTRAL ALABAMA WATER SYSTEM | AL0000738 | Alabama | Community | 585,000 |
| ALBUQUERQUE WATER SYSTEM | NM3510701 | New Mexico | Community | 560,326 |
| MDWASA - PALMETTO COUNTRY CLUB | FL4131617 | Florida | Community | 560,000 |
| CITY OF FRESNO | CA1010007 | California | Community | 545,716 |
| ORLANDO UTILITIES COMMISSION | FL3480962 | Florida | Community | 536,466 |
| QUEEN LANE WATER PLANT | PA1510003 | Pennsylvania | Community | 535,000 |
| AURORA CITY OF | CO0103005 | Colorado | Community | 533,407 |
| CITY OF SACRAMENTO MAIN | CA3410020 | California | Community | 527,979 |
| PITTSBURGH WATER & SEWER AUTH | PA5020038 | Pennsylvania | Community | 520,000 |
| NEW YORK CITY - GROUNDWATER SYSTEM | NY7011735 | New York | Community | 518,000 |
| HCWRD/SOUTH-CENTRAL | FL6290787 | Florida | Community | 515,012 |
| KANSAS CITY PWS | MO1010415 | Missouri | Community | 513,800 |
| PINELLAS COUNTY UTILITIES | FL6521405 | Florida | Community | 506,353 |
| SUNDROP BOTTLING CO INC | NC0136599 | North Carolina | Transient Non-Community | 500,000 |
| ASHBURTON | MD0300001 | Maryland | Community | 500,000 |
| BALTIMORE CITY MUNICIPAL WORKS | MD0002906 | Maryland | Community | 500,000 |
| BALTIMORE CITY MUNICIPAL WORKS | MD0030013 | Maryland | Community | 500,000 |
| WATER DISTRICT 1 OF JOHNSON CO | KS2009110 | Kansas | Community | 490,000 |
| WSSC (INCLUDED IN 0150005) | MD0160014 | Maryland | Community | 482,000 |
| LONG BEACH UTILITIES DEPARTMENT | CA1910065 | California | Community | 466,772 |
| MESA CITY OF | AZ0407095 | Arizona | Community | 466,000 |
| COLORADO SPRINGS UTILITIES | CO0121150 | Colorado | Community | 464,111 |
| PA GAS AND WATER CO-CENTRAL DI | PA2400069 | Pennsylvania | Community | 453,000 |
| LITTLE RIVER MARINA | GA0730032 | Transient Non-Community | 453,000 | |
| COLUMBUS-HAP CREMEAN WTP | OH2500421 | Ohio | Community | 446,812 |
| TACOMA WATER DIVISION CITY OF | WA5386800 | Washington | Community | 446,170 |