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Infrastructure
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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
DESERT WATER AGENCY CA3310005 California Community 74,807
APPLETON WATERWORKS WI4450333 Wisconsin Community 74,511
WAILUKU HI0000212 Hawaii Community 74,511
AQUA OHIO - MENTOR OH4301511 Ohio Community 74,500
EVANSTON IL0310810 Illinois Community 74,486
NEWTON CO. WATER-SEWERAGE AUTH GA2170004 Georgia Community 74,364
SOUTH ADAMS COUNTY WSD CO0101140 Colorado Community 74,341
INDIANA AMERICAN WATER - MUNCIE IN5218012 Indiana Community 74,030
ROCHESTER HILLS MI0000325 Michigan Community 74,000
CALDWELL CITY OF ID3140013 Idaho Community 74,000
IL AMERICAN-WEST SUBURBAN IL1974151 Illinois Community 73,978
GRESHAM, CITY OF OR4100357 Oregon Community 73,932
MOUNT VERNON WATER DEPARTMENT NY5903441 New York Community 73,893
MO AMERICAN JOPLIN MO5010413 Missouri Community 73,728
GENESEE COUNTY WATER SYSTEM MI0002615 Michigan Community 73,726
NEW BRITAIN WATER DEPARTMENT CT0890011 Connecticut Community 73,534
WARD II WATER DISTRICT LA1063039 Louisiana Community 73,506
WATERFORD TOWNSHIP MI0006910 Michigan Community 73,441
ARLINGTON HEIGHTS IL0314030 Illinois Community 73,320
WARWICK-CITY OF RI1615627 Rhode Island Community 73,289
RURAL LORAIN CO. WATER A OH4701803 Ohio Community 73,125
ST CHARLES PWS MO6010707 Missouri Community 73,040
MO AMERICAN ST CHARLES MO6036238 Missouri Community 73,000
CITY OF SAN MARCOS TX1050001 Texas Community 72,970
TURLOCK, CITY OF CA5010019 California Community 72,682
LIBERTY UTILITIES - BELLFLOWER-NORWALK CA1910211 California Community 72,624
LAS VIRGENES MWD CA1910225 California Community 72,602
TONAWANDA, TOWN WATER DEPT. NY1404556 New York Community 72,571
TANGIPAHOA PARISH WATER DISTRICT LA1105008 Louisiana Community 72,504
NORTH WALES WATER AUTHORITY PA1460048 Pennsylvania Community 72,496
BISMARCK CITY OF ND0800080 North Dakota Community 72,417
SUNRISE SAWGRASS FL4061408 Florida Community 72,400
FRAMINGHAM WATER DEPT. (MWRA) MA3100000 Massachusetts Community 72,362
WINTER GARDEN WATER DEPT (3 WPS) FL3481481 Florida Community 72,205
INDIVIDUAL WELL PLANT MD0000080 Maryland Community 72,204
TULARE, CITY OF CA5410015 California Community 72,131
WYOMING MI0007220 Michigan Community 72,125
DALE CITY VA6153625 Virginia Community 72,062
RAPID CITY SD4600406 South Dakota Community 72,009
STATE COLLEGE BORO WATER AUTH PA4140096 Pennsylvania Community 72,000
SHELBY TOWNSHIP MI0006010 Michigan Community 72,000
SOUTHFIELD MI0006160 Michigan Community 71,739
CITY OF NORTH RICHLAND HILLS TX2200063 Texas Community 71,600
CALIFORNIA WATER SERVICE CO. - PALOS VER CA1910104 California Community 71,452
Saint Cloud MN1730027 Minnesota Community 71,321
PORT ORANGE, CITY OF FL3641044 Florida Community 71,096
BREMERTON CITY OF WA5308200 Washington Community 70,913
PALATINE IL0312340 Illinois Community 70,875
LAFAYETTE WATER WORKS IN5279013 Indiana Community 70,835
WAUKESHA WATER UTILITY WI2680238 Wisconsin Community 70,718