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Indiana: drinking water systems
The 767 active community water systems in Indiana on EPA's record, serving 5,241,495 people (EPA's counts). Systems serving more than 500 people have their own page; find yours by name, city, county, ZIP code or PWS ID. EPA's file dated Oct. 23, 2026.
155
155 of 767 systems have a health-based violation on EPA's record since Oct. 23, 2023, serving 518,703 of the state's 5,241,495 people (10%); 21 are an EPA enforcement priority. EPA lists 32 as currently in violation (EPA's system file of Oct. 23, 2026).
Health-based violations, in EPA's words: “Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.”Find your water system
Health-based violations since Oct. 23, 2023, by contaminant or rule
Cities and counties EPA lists, A to Z
The cities EPA lists as served by each system, with the number of systems that list each; a system for which EPA lists no city is under its county.
ANDERSON 2AURORA 4Bartholomew (county) 1BEDFORD 3BLOOMFIELD 2BLOOMINGTON 9BRISTOL 3BROOKVILLE 2Brown (county) 1CANNELTON 2CARMEL 3CHARLESTOWN 2CLINTON 2COLUMBUS 3CONNERSVILLE 5CORYDON 2CROMWELL 2CROTHERSVILLE 2CROWN POINT 2CULVER 2DEMOTTE 2DUBOIS 2EVANSVILLE 2FERDINAND 2GEORGETOWN 2GOSHEN 3GRANDVIEW (GRAND VIEW) 2GREENCASTLE 5GREENSBURG 3HANOVER 2HAUBSTADT 2HEBRON 2HUNTINGBURG 2JEFFERSONVILLE 3Kosciusko (county) 1LaGrange (county) 1Lake (county) 1LAUREL 2LAWRENCEBURG 4LIBERTY 3LINTON 2LOOGOOTEE 2MADISON 4MARTINSVILLE 5Miami (county) 1MILAN 2MITCHELL 2MOORESVILLE 4Morgan (county) 1NEW CASTLE 3NEWBURGH 3NINEVEH 2NORTH VERNON 6NOTRE DAME 2OTWELL 2PERU 12PLAINFIELD 2ROACHDALE 2ROSEDALE 2SALEM 3SCHERERVILLE 2SEYMOUR 3SHOALS 2Steuben (county) 1TELL CITY 3TERRE HAUTE 7VALPARAISO 4Vigo (county) 1VINCENNES 2WARSAW 10WASHINGTON 2WEST LAFAYETTE 2WESTVILLE 5
Counties
A page for each county EPA lists for three or more systems with a page of their own: the systems that serve it and how each stands on EPA's record.
Adams County 6Allen County 12Bartholomew County 6Benton County 6Boone County 7Brown County 3Carroll County 4Cass County 7Clark County 10Clay County 7Clinton County 7Crawford County 6Daviess County 6Dearborn County 9Decatur County 5DeKalb County 7Delaware County 14Dubois County 11Elkhart County 16Floyd County 4Fountain County 5Franklin County 4Fulton County 5Gibson County 9Grant County 10Greene County 7Hamilton County 16Hancock County 7Harrison County 6Hendricks County 9Henry County 9Howard County 12Huntington County 8Jackson County 7Jasper County 5Jay County 4Jefferson County 7Jennings County 9Johnson County 8Knox County 11Kosciusko County 30LaGrange County 9Lake County 30LaPorte County 23Lawrence County 6Madison County 13Marion County 3Marshall County 12Martin County 5Miami County 15Monroe County 10Montgomery County 10Morgan County 13Newton County 8Noble County 13Orange County 3Owen County 3Parke County 7Perry County 6Pike County 6Porter County 8Posey County 4Pulaski County 3Putnam County 11Randolph County 8Ripley County 8Rush County 5Shelby County 9Spencer County 9St. Joseph County 15Starke County 3Steuben County 18Sullivan County 10Tippecanoe County 11Tipton County 3Vermillion County 12Vigo County 11Wabash County 13Warrick County 7Washington County 5Wayne County 12White County 13Whitley County 7
Water systems with a page of their own, A to Z (507)
- ABERDEEN PATE WATER COMPANY, INC.
- AKRON WATER DEPARTMENT
- ALBANY WATER DEPARTMENT
- ALBION WATER & SEWER
- ALEXANDRIA WATER DEPARTMENT
- ALFORDSVILLE WATER UTILITY
- ANCILLA DOMINI (CONVENT)
- AND-TRO WATER AUTHORITY - DISTRICT 1
- AND-TRO WATER AUTHORITY - DISTRICT 2
- ANDERSON TOWNSHIP REGIONAL SEWER DIST.
- ANDERSON WATER DEPARTMENT
- ANDREWS WATER DEPARTMENT
- ANGOLA WATER DEPARTMENT
- APPLE VALLEY UTILITIES, INC.
- AQUA INDIANA - WEDGEWOOD PARK WATER UTIL
- AQUA INDIANA WATER COMPANY
- ARCADIA WATER DEPARTMENT
- ARGOS MUNICIPAL WATER PLANT
- ASHLEY WATER DEPARTMENT
- ATLANTA WATER DEPARTMENT
- ATTICA WATER UTILITY
- AUBURN WATER DEPARTMENT
- AURORA UTILITIES
- AVILLA WATER DEPARTMENT
- B&B WATER PROJECT, INC.
- BAINBRIDGE WATER WORKS
- BARGERSVILLE WATER DEPARTMENT
- BATESVILLE WATER UTILITY
- BATTLE GROUND WATER DISTRICT
- BBP WATER COMPANY
- BEDFORD CITY UTILITIES
- BERNE WATER DEPARTMENT
- BICKNELL MUNICIPAL UTILITIES
- BIRDSEYE WATER SYSTEM
- BLOOMINGDALE WATER WORKS
- BLUE RIVER REGIONAL WATER DISTRICT
- BLUFFTON UTILITIES WATER DEPT
- BORDEN TRI-COUNTY REGION
- BOSWELL WATER DEPARTMENT
- BOURBON WATER DEPARTMENT
- BRAZIL CITY WATER WORKS
- BREMEN WATER DEPARTMENT
- BRISTOL WATER DEPARTMENT
- BROOK WATER UTILITY
- BROOKLYN WATER WORKS
- BROOKSTON WATER DEPARTMENT
- BROOKVILLE WATER WORKS
- BROWN COUNTY WATER UTILITY
- BROWNSBURG WATER WORKS
- BUNKER HILL WATER WORKS
- BURNT PINES WATER ASSOCIATION
- BUTLER WATER DEPARTMENT
- CAMBRIDGE CITY MUNICIPAL WATER WORKS
- CAMDEN WATER UTILITY
- CAMP ATTERBURY
- CAMPBELLSBURG WATER WORKS
- CANAAN UTILITIES
- CANNELTON UTILITIES
- CARBON WATER CORPORATION
- CARLISLE WATER DEPARTMENT
- CARMEL WATER DEPARTMENT
- CARTHAGE WATER DEPARTMENT
- CATARACT LAKE WATER CORPORATION
- CAYUGA WATER DEPARTMENT
- CEDAR LAKE - ROBINS NEST
- CEDAR LAKE WATER WORKS
- CENTER POINT WATER WORKS
- CENTERVILLE WATER WORKS
- CHALMERS WATER WORKS
- CHANDLER WATER WORKS DEPARTMENT
- CHESTERFIELD WATER DEPARTMENT
- CHRISNEY WATER DEPARTMENT
- CHURUBUSCO WATER DEPARTMENT
- CICERO WATER DEPARTMENT
- CITIZENS WATER - INDIANAPOLIS
- CITIZENS WATER - MORGAN
- CITIZENS WATER - WHITESTOWN
- CITIZENS WATER OF WESTFIELD, LLC
- CITY OF BLOOMINGTON UTILITIES
- CITY OF BOONVILLE
- CITY OF GREENDALE UTILITIES
- CITY OF LAWRENCE UTILITIES
- CLARKS HILL WATER WORKS
- CLAY CITY WATER WORKS
- CLINTON TOWNSHIP WATER COMPANY
- CLINTON WATER UTILITY
- CLOVERDALE WATER WORKS
- COBUS GREEN MOBILE HOME PARK
- COLFAX WATER COMPANY
- COLUMBIA CITY WATER DEPARTMENT
- COLUMBUS MUNICIPAL UTILITY
- CONNERSVILLE UTILITIES
- CONVERSE WATER WORKS
- CORDRY SWEETWATER CONSERVANCY DISTRICT
- CORYDON WATER WORKS
- COVINGTON WATER DEPARTMENT
- CRAWFORD COUNTY WATER COMPANY, INC.
- CROMWELL WATER WORKS
- CROTHERSVILLE UTILITIES
- CROWN POINT WATER WORKS
- CUII - TWIN LAKES
- CUII - WATER SERVICE CO.
- CULVER EDUCATIONAL FOUNDATION
- CULVER WATER DEPARTMENT
- CYNTHIANA WATER WORKS
- DALE WATER WORKS
- DALEVILLE (TOWN OF)
- DANA WATER WORKS
- DANVILLE WATER WORKS
- DARLINGTON WATER
- DAVIESS COUNTY RURAL WATER
- DAYTON WATER UTILITY
- DECATUR CO. WATER CORP.
- DECATUR WATER DEPARTMENT
- DELPHI WATER WORKS
- DILLSBORO WATER WORKS
- DUBLIN MUNICIPAL WATER WORKS
- DUBOIS WATER UTILITIES
- DUFF WATER CORPORATION
- DUGGER UTILITIES
- DUNKIRK WATER DEPARTMENT
- DUPONT WATER COMPANY
- DYER WATER DEPARTMENT
- EAST CHICAGO WATER WORKS
- EAST FORK WATER
- EAST LAWRENCE WATER AUTHORITY
- EAST MONROE WATER CORPORATION
- EAST WASHINGTON RURAL WATER
- EASTERN BARTHOLOMEW WATER
- EASTERN HEIGHTS UTILITIES
- EATON WATER WORKS
- EDGEWOOD WATER DEPARTMENT
- EDINBURGH WATER UTILITY
- EDWARDSVILLE WATER CORPORATION
- ELBERFELD WATER DEPARTMENT
- ELKHART PUBLIC WORKS AND UTILITIES
- ELLETTSVILLE WATER WORKS
- ELLIS WATER COMPANY, INC.
- ELNORA WATER WORKS
- ELWOOD WATER & SEWAGE
- ENGLISH WATER WORKS
- ETNA GREEN WATER DEPARTMENT
- EVANSVILLE WATER UTILITY
- EVERTON WATER CORPORATION
- FAIRMOUNT WATER WORKS
- FAIRVIEW PARK WATER UTILITIES
- FARMLAND MUNICIPAL WATER WORKS
- FAWN RIVER CROSSING
- FAYETTE TOWNSHIP WATER ASSN.
- FCI & FPC - TERRE HAUTE
- FERDINAND WATER DEPARTMENT
- FINCH NEWTON WATER, INC.
- FLORA WATER WORKS
- FLOYDS KNOBS WATER COMPANY, INC.
- FORT BRANCH WATER DEPARTMENT
- FORT WAYNE - 3 RIVERS FILTRATION PLANT
- FORTVILLE WATER WORKS
- FOUNTAIN CITY WATER WORKS
- FOWLER WATER WORKS
- FRANCESVILLE WATER DEPARTMENT
- FRANCISCO WATER DEPARTMENT
- FRANKFORT WATER WORKS
- FRANKLIN COUNTY WATER ASSOCIATION
- FRANKTON WATER WORKS
- FREELANDVILLE WATER ASSOCIATION
- FREMONT WATER DEPARTMENT
- GALVESTON WATER WORKS
- GARRETT WATER UTILITY
- GAS CITY WATER DEPARTMENT
- GASTON WATER WORKS
- GENEVA WATER DEPARTMENT
- GENTRYVILLE WATER UTILITY
- GERMAN TOWNSHIP WATER DISTRICT INC.
- GIBSON WATER AUTHORITY
- GOODLAND WATER WORKS
- GOSHEN WATER UTILITY
- GOSPORT WATER UTILITY
- GRABILL WATER WORKS
- GRANDVIEW MUNICIPAL WATER UTILITY
- GREENCASTLE DEPARTMENT OF WATER
- GREENFIELD WATER UTILITY
- GREENSBURG MUNICIPAL WATER WORKS
- GREENTOWN MUNICIPAL WATER
- GREENVILLE WATER UTILITY
- GRIFFITH WATER DEPARTMENT
- HAGERSTOWN MUNICIPAL WATER WORKS
- HAMILTON WATER DEPARTMENT
- HAMLET WATER WORKS
- HAMMOND WATER WORKS DEPARTMENT
- HANOVER COLLEGE
- HANOVER WATER DEPARTMENT
- HARTFORD CITY WATER WORKS
- HAUBSTADT WATER DEPARTMENT
- HAYDEN WATER ASSOCIATION
- HEBRON WATER DEPARTMENT
- HERITAGE HILLS CAMPGROUND
- HIGHLAND WATER WORKS
- HILL WATER CORPORATION
- HILLSBORO WATER UTILITY
- HILLSDALE WATER CORPORATION
- HOGAN WATER CORPORATION
- HOLLAND WATER WORKS
- HOLTON COMMUNITY WATER CORP.
- HOOSIER HILLS REGIONAL WATER DISTRICT
- HOPE WATER DEPARTMENT
- HUDSON WATER WORKS
- HUNTERTOWN WATER WORKS
- HUNTINGBURG MUNICIPAL WATER
- HUNTINGTON WATER DEPARTMENT
- HYMERA WATER WORKS
- INDIANA AMERICAN WATER - CHARLESTOWN
- INDIANA AMERICAN WATER - CRAWFORDSVILLE
- INDIANA AMERICAN WATER - FARMERSBURG
- INDIANA AMERICAN WATER - GEORGETOWN
- INDIANA AMERICAN WATER - JOHNSON COUNTY
- INDIANA AMERICAN WATER - KOKOMO
- INDIANA AMERICAN WATER - LOWELL
- INDIANA AMERICAN WATER - MECCA
- INDIANA AMERICAN WATER - MOORESVILLE
- INDIANA AMERICAN WATER - MUNCIE
- INDIANA AMERICAN WATER - NEWBURGH
- INDIANA AMERICAN WATER - NOBLESVILLE
- INDIANA AMERICAN WATER - NORTHWEST
- INDIANA AMERICAN WATER - RICHMOND
- INDIANA AMERICAN WATER - RIVERS EDGE
- INDIANA AMERICAN WATER - RUSSIAVILLE
- INDIANA AMERICAN WATER - S. INDIANA
- INDIANA AMERICAN WATER - SEYMOUR
- INDIANA AMERICAN WATER - SHELBYVILLE
- INDIANA AMERICAN WATER - SHERIDAN
- INDIANA AMERICAN WATER - SULLIVAN
- INDIANA AMERICAN WATER - SUMMITVILLE
- INDIANA AMERICAN WATER - TERRE HAUTE
- INDIANA AMERICAN WATER - WABASH
- INDIANA AMERICAN WATER - WARSAW
- INDIANA AMERICAN WATER - WAVELAND
- INDIANA AMERICAN WATER - WEST LAFAYETTE
- INDIANA AMERICAN WATER - WINCHESTER
- INDIANA AMERICAN WATER - YANKEETOWN
- INDIANA MASONIC HOME
- INGALLS WATER COMPANY
- IRELAND UTILITIES, INC.
- JACKSON COUNTY WATER - REDDINGTON
- JACKSON COUNTY WATER UTILITY
- JAMESTOWN MUNICIPAL WATER
- JASONVILLE WATER DEPARTMENT
- JASPER MUNICIPAL WATER UTILITY
- JENNINGS NORTHWEST REGIONAL UTILITY
- JENNINGS WATER, INC.
- JONESBORO WATER DEPARTMENT
- KENDALLVILLE WATER DEPARTMENT
- KENT WATER COMPANY
- KENTLAND WATER WORKS
- KEWANNA WATER WORKS
- KINGMAN WATER WORKS
- KINGSFORD HEIGHTS WATER
- KIRKLIN WATER DEPARTMENT
- KNIGHTSTOWN WATER UTILITY
- KNIGHTSVILLE WATER WORKS
- KNOX COUNTY WATER, INC.
- KNOX WATER WORKS
- KOUTS WATER WORKS
- L-A-C UTILITIES
- L-M-S CONSERVANCY DISTRICT
- LACROSSE WATER DEPARTMENT
- LADOGA WATER WORKS
- LAFAYETTE WATER WORKS
- LAFONTAINE WATER COMPANY
- LAGRANGE DEPARTMENT OF WATER WORKS
- LAKE SANTEE RWWD
- LAKEVILLE WATER DEPARTMENT
- LANESVILLE WATER WORKS
- LAPEL MUNICIPAL WATER COMPANY
- LAPORTE WATER WORKS
- LAUREL WATER DEPARTMENT
- LAWRENCEBURG MUNICIPAL UTILITIES
- LEBANON UTILITIES
- LIBERTY WATER WORKS
- LIGONIER WATER WORKS
- LINDEN WATER DEPARTMENT
- LINTON MUNICIPAL WATER UTILITY
- LOGANSPORT MUNICIPAL UTILITY-WELL FIELD
- LONG BEACH WATER DEPARTMENT
- LOOGOOTEE WATER WORKS
- LYFORD WATER WORKS
- LYNN WATER COMPANY
- LYNNVILLE WATER WORKS
- LYONS WATER UTILITY
- MADISON STATE HOSPITAL
- MADISON WATER DEPARTMENT
- MAPLETURN UTILITIES, INC.
- MARION CITY WATER WORKS
- MARKLE WATER UTILITY
- MARTINSVILLE WATER UTILITY
- MARYSVILLE OTISCO NABB WATER CORP.
- MAYSVILLE REGION. WATER & SEWER DISTRICT
- MECKS WHISPERING PINES II LLC
- MEDARYVILLE WATER COMPANY
- MEDORA WATER DEPARTMENT
- MENTONE WATER COMPANY
- MICHIGAN CITY DEPARTMENT OF WATER WORKS
- MIDDLEBURY WATER DEPARTMENT
- MIDDLETOWN WATER UTILITY
- MILAN WATER WORKS
- MILFORD WATER DEPARTMENT
- MILLERSBURG WATER COMPANY
- MILTON WATER WORKS
- MISHAWAKA UTILITIES
- MITCHELL WATER DEPARTMENT
- MONON WATER UTILITY
- MONROE CITY WATER UTILITIES
- MONROE WATER DEPARTMENT
- MONROEVILLE WATER WORKS
- MONTEZUMA MUNICIPAL UTILITY
- MONTGOMERY WATER WORKS
- MONTICELLO WATER WORKS
- MONTPELIER WATER WORKS
- MOORESVILLE ACRES
- MORGAN COUNTY RURAL WATER COMPANY
- MORGANTOWN WATER UTILITY
- MOROCCO WATER DEPARTMENT
- MORRISTOWN WATER DEPARTMENT
- MOUNT VERNON WATER WORKS
- MULBERRY WATER WORKS
- MUNSTER WATER COMPANY
- NAPOLEON COMMUNITY RURAL WATER CORP.
- NAPPANEE WATER UTILITY
- NASHVILLE WATER DEPARTMENT
- NAVAL WEAPONS STATION, CRANE
- NEW CARLISLE WATER WORKS
- NEW CASTLE CORRECTIONAL FACILITY
- NEW CASTLE UTILITIES
- NEW CHICAGO WATER WORKS
- NEW DURHAM ESTATES
- NEW HARMONY WATER UTILITY
- NEW HAVEN WATER DEPARTMENT
- NEW MARKET WATER WORKS
- NEW PEKIN WATER UTILITY
- NINESTAR CONNECT - GEM WATER
- NORTH DEARBORN WATER AUTHORITY
- NORTH JUDSON WATER COMPANY
- NORTH LAWRENCE WATER AUTHORITY
- NORTH LIBERTY WATER WORKS
- NORTH MANCHESTER WATER DEPARTMENT
- NORTH SALEM WATER CORPORATION
- NORTH VERNON WATER DEPARTMENT
- NORTHWEST JASPER REGIONAL WATER DISTRICT
- OAKLAND CITY WATER DEPARTMENT
- OAKTOWN WATER WORKS
- ODON WATER UTILITIES, INC.
- OGDEN DUNES WATER
- OLDENBURG WATER WORKS
- OOLITIC WATER WORKS
- ORLAND WATER WORKS
- ORLEANS WATER WORKS
- OSGOOD WATER DEPARTMENT
- OSSIAN MUNICIPAL WATER DEPARTMENT
- OTTERBEIN WATER DEPARTMENT
- OTWELL WATER CORP. #2
- OTWELL WATER CORPORATION
- OWENSVILLE WATER WORKS
- OXFORD WATER UTILITY
- PAINTED HILLS UTILITY COMPANY
- PALMYRA WATER WORKS
- PAOLI WATER DEPARTMENT
- PARAGON WATER WORKS
- PARKER CITY WATER DEPARTMENT
- PATOKA LAKE REGIONAL WATER
- PATOKA WATER & ELECTRIC
- PATOKA WATER COMPANY, INC.
- PATRIOT WATER DEPARTMENT
- PAXTON WATER CORPORATION
- PENDLETON WATER COMPANY
- PENNVILLE WATER COMPANY
- PERU UTILITIES/GRISSOM
- PERU WATER DEPARTMENT
- PETERSBURG WATER COMPANY
- PIERCETON WATER WORKS
- PIKE-GIBSON WATER, INC.
- PIONEER WATER L.L.C.
- PITTSBORO WATER COMPANY
- PLAINFIELD RE-ENTRY EDUCATIONAL FACILITY
- PLAINFIELD WATER WORKS
- PLEASANTVILLE WATER COMPANY
- PLYMOUTH WATER DEPARTMENT
- PORTLAND MUNICIPAL WATER PLANT
- POSEY TOWNSHIP WATER CORP.
- POSEYVILLE MUNICIPAL WATER DEPARTMENT
- PRINCES LAKE WATER DEPARTMENT
- PRINCETON WATER DEPARTMENT
- PURDUE UNIV. WATER WORKS
- PUTNAMVILLE CORRECTIONAL FACILITY
- RAMSEY WATER COMPANY, INC.
- REDKEY WATER PLANT
- REELSVILLE WATER COMPANY
- REMINGTON WATER WORKS
- RENSSELAER WATER DEPARTMENT
- REO WATER CORPORATION
- REYNOLDS WATER WORKS
- RHS WATER CORPORATION
- RIDGEVILLE WATER DEPARTMENT
- RISING SUN UTILITIES
- ROACHDALE WATER WORKS
- ROANOKE WATER WORKS
- ROCHESTER WATER DEPARTMENT
- ROCKPORT WATER
- ROCKVILLE LIGHT & WATER
- ROSEDALE WATER WORKS
- ROSSVILLE WATER WORKS
- ROYAL CENTER WATER UTILITY
- RURAL MEMBERSHIP WATER CORP. OF CLARK CO
- RUSHVILLE CITY UTILITY
- RYKERS RIDGE WATER COMPANY
- SALEM WATER WORKS
- SANTA CLAUS WATER UTILITY
- SCHERERVILLE WATER DEPARTMENT
- SCOTTSBURG WATER DEPARTMENT
- SEELYVILLE WATER WORKS
- SELLERSBURG WATER DEPARTMENT
- SEYMOUR WATER PLANT, LP
- SHARPSVILLE WATER UTILITY
- SHELBURN WATER UTILITIES
- SHIPSHEWANA WATER WORKS
- SHIRLEY MUNICIPAL WATER
- SHOALS WATER COMPANY
- SILVER LAKE WATER WORKS
- SISTERS OF HOLY CROSS-ST. MARYS COLLEGE
- SISTERS OF PROVIDENCE/ST. MARY OF WOODS
- SOUTH 43 WATER ASSOCIATION, INC.
- SOUTH BEND WATER WORKS
- SOUTH COAST CONSERVANCY DISTRICT
- SOUTH HARRISON WATER CORPORATION
- SOUTH LAWRENCE UTILITIES
- SOUTH WHITLEY MUNICIPAL WATER
- SOUTHERN MONROE WATER AUTHORITY
- SOUTHWESTERN BARTHOLOMEW WATER CORP.
- SPEEDWAY WATER WORKS
- SPICELAND MUNICIPAL WATER UTILITY
- SPRINGS VALLEY REGIONAL WATER DISTRICT
- ST. ANTHONY WATER UTILITY
- ST. BERNICE WATER CORP.
- ST. HENRY WATER CORPORATION
- ST. JOHN MUNICIPAL WATER UTILITY
- ST. MEINRAD UTILITIES, INC.
- ST. PAUL MUNICIPAL WATER
- STAUNTON MUNICIPAL WATER
- STUCKER FORK WATER UTILITY
- SULLIVAN-VIGO RURAL WATER CORP.
- SUNMAN WATER WORKS
- SWAYZEE WATER UTILITY
- SWITZ CITY WATER WORKS
- SYRACUSE WATER COMPANY
- TELL CITY WATER DEPARTMENT
- TENNYSON WATER UTILITY
- THORNTOWN UTILITIES
- TIMBERBROOK MOBILE HOME PARK
- TIPTON UTILITY SERVICE B
- TOPEKA WATER DEPARTMENT
- TOWN OF ELIZABETH
- TOWN OF FILLMORE UTILITIES
- TRAFALGAR WATER DEPARTMENT
- TRI-COUNTY CONSERVANCY DISTRICT
- TRI-TOWNSHIP WATER CORPORATION
- TROY TOWNSHIP WATER ASSOCIATION
- TROY WATER UTILITY
- TURKEY CREEK REGIONAL SEWER DISTRICT
- UMH IN BROADMORE, LLC AKA BROADMORE ESTA
- UNION CITY WATER WORKS
- UNIVERSITY OF NOTRE DAME
- UPLAND WATER DEPARTMENT
- VALLEY RURAL UTILITY COMPANY
- VALPARAISO DEPARTMENT OF WATER WORKS
- VAN BIBBER LAKE CONSERVANCY DISTRICT
- VAN BUREN MUNICIPAL UTILITIES
- VAN BUREN WATER, INC.
- VEEDERSBURG MUNICIPAL WATER SUPPLY
- VERNON WATER DEPARTMENT
- VERSAILLES WATER WORKS
- VEVAY WATER DEPARTMENT
- VINCENNES WATER DEPARTMENT
- WAKARUSA WATER WORKS
- WALDRON CONSERVANCY DISTRICT
- WALKERTON LIGHT & WATER
- WALTON WATER WORKS
- WANATAH WATER UTILITY
- WARREN MUNICIPAL WATER WORKS
- WASHINGTON TOWNSHIP WATER
- WASHINGTON TWP WATER AUTHORITY
- WASHINGTON WATER WORKS
- WATERLOO WATER WORKS
- WATSON RURAL WATER COMPANY
- WAYNETOWN WATER WORKS
- WEST LEBANON WATER WORKS
- WEST TERRE HAUTE WATER
- WESTPORT WATER COMPANY
- WESTVILLE CORRECTIONAL FACILITY
- WESTVILLE WATER DEPARTMENT
- WHITELAND WATER WORKS
- WHITING WATER DEPARTMENT
- WILLIAMSPORT WATER UTILITY
- WINAMAC MUNICIPAL UTILITIES
- WINDFALL WATER DEPARTMENT
- WINSLOW WATER WORKS
- WOLCOTT WATER WORKS
- WOLCOTTVILLE WATER WORKS
- WOODBURN WATER WORKS
- YORKTOWN WATER DEPARTMENT
From EPA's Safe Drinking Water Information System (SDWIS), through EPA ECHO's drinking water system download. Health-based violations from EPA Envirofacts, downloaded Nov. 2, 2026. EPA's file dated Oct. 23, 2026. EPA: “All compliance and enforcement data displayed on ECHO are current as of the last official quarterly refresh of the source data system, SDWIS, which may lag by three to six months.” These are records of violations, not a test of your tap water today: your water system's annual Consumer Confidence Report has its test results. Names and values are shown as EPA writes them. EPA ECHO drinking water search.