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