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Infrastructure
Bridge Safety 624,000 bridge inspections Aviation Safety 30,000+ NTSB aviation events Dam Safety 92,600 dam safety records Water Safety 433,000+ public water systems Railroad Safety 438,000+ rail crossings Pipeline Safety 8,800+ pipeline incidents
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Browse Water Systems

433,347 public water systems.

Public Water Systems Database

Browse 433,347 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
GSW&SA (SC2620004) SC2620004 South Carolina Community 247,550
CHANDLER CITY OF AZ0407090 Arizona Community 247,328
DES MOINES WATER WORKS IA7727031 Iowa Community 246,055
MDWASA-HIALEH PRESTON SYS FL4130875 Florida Community 243,147
EMERALD COAST UTILITIES AUTHORITY (ECUA) FL1170525 Florida Community 242,172
ANN ARBOR MI0000220 Michigan Community 241,868
SCOTTSDALE CITY OF AZ0407098 Arizona Community 241,361
OTAY WATER DISTRICT CA3710034 California Community 238,008
HIALEAH, CITY OF FL4130604 Florida Community 238,000
SAN GABRIEL VALLEY WC - FONTANA CA3610041 California Community 237,700
DAYTON, CITY OF-OTTAWA PLANT OH5700722 Ohio Community 236,000
GLENDALE CITY OF AZ0407093 Arizona Community 234,766
NORFOLK, CITY OF VA3710100 Virginia Community 234,220
MIDDLESEX WATER COMPANY NJ1225001 New Jersey Community 233,376
CITY OF FRISCO TX0430005 Texas Community 231,910
ARTESIAN WATER COMPANY DE0000552 Delaware Community 231,114
RICHMOND, CITY OF VA4760100 Virginia Community 229,395
COLUMBUS GA2150000 Georgia Community 229,000
THORNTON CITY OF CO0101150 Colorado Community 226,465
TUALATIN VALLEY WATER DISTRICT OR4100665 Oregon Community 224,600
PORT ST LUCIE UTILITIES FL4560954 Florida Community 224,485
CHEROKEE COUNTY GA0570002 Georgia Community 224,427
CITY OF MCKINNEY TX0430039 Texas Community 224,043
CARY, TOWN OF NC0392020 North Carolina Community 224,000
CONSOLIDATED U.D. OF RUTHERFORD CO TN0000791 Tennessee Community 221,871
MOA MUNICIPALITY OF ANCHORAGE AK2210906 Alaska Community 221,351
ERIE CITY WATER AUTHORITY PA6250028 Pennsylvania Community 220,001
LIBERTY UTILITIES NEW YORK - LYNBROOK NY2902835 New York Community 220,000
MODESTO, CITY OF CA5010010 California Community 218,771
WILDWOOD CITY WATER DEPARTMENT NJ0514001 New Jersey Community 218,472
WAIPAHU-EWA-WAIANAE HI0000335 Hawaii Community 217,479
NJ AMERICAN WATER - SHORT HILLS NJ0712001 New Jersey Community 217,230
TRENTON WATER WORKS NJ1111001 New Jersey Community 217,000
SIOUX FALLS SD4600294 South Dakota Community 216,462
EVERETT PUBLIC WORKS DEPT. CITY OF WA5324050 Washington Community 215,774
FAYETTEVILLE PUBLIC WORKS COMM NC0326010 North Carolina Community 215,590
COLLIER COUNTY REGIONAL WTP FL5114069 Florida Community 215,350
ARLINGTON COUNTY VA6013010 Virginia Community 215,000
SAN BERNARDINO CITY CA3610039 California Community 214,665
PCUD-PASCO COUNTY REGIONAL PWS FL6511361 Florida Community 214,403
ROCHESTER CITY NY2704518 New York Community 214,000
YONKERS CITY NY5903465 New York Community 211,569
TENNESSEE AMERICAN WATER TN0000107 Tennessee Community 211,499
CUCAMONGA VALLEY WATER DISTRICT CA3610018 California Community 211,069
SPRINGFIELD PWS MO5010754 Missouri Community 210,898
INDIANA AMERICAN WATER - NORTHWEST IN5245015 Indiana Community 210,510
NJ AMERICAN W CO HADDON NJ0418001 New Jersey Community 210,213
WVAWC-KANAWHA VALLEY DIST WV3302016 West Virginia Community 209,283
HCWRC/NORTHWEST UTILITIES FL6290388 Florida Community 208,982
LOS ANGELES CWWD 40 REG 4 & 34 LANCASTER CA1910070 California Community 208,129