| LAFAYETTE WATER WORKS | 70,835 | 46 | Detected |
| PURDUE UNIV. WATER WORKS | 50,000 | 82 | Detected |
| INDIANA AMERICAN WATER - WEST LAFAYETTE | 35,533 | 3 | Detected |
| BATTLE GROUND WATER DISTRICT | 1,940 | 16 | — |
| DAYTON WATER UTILITY | 1,420 | 21 | — |
| FAMILY EXPRESS #43 LAFAYETTE SR 25 | 1,107 | 79 | — |
| FAMILY EXPRESS #41 LAFAYETTE US 52 | 1,102 | 42 | — |
| EVONIK CORPORATION | 1,034 | 23 | — |
| EXPLORATION | 803 | 22 | — |
| FREDS MINI MART | 800 | 0 | — |
| CLARKS HILL WATER WORKS | 660 | 38 | — |
| HERSHEY ELEMENTARY SCHOOL | 612 | 7 | — |
| AMERIMART | 600 | 15 | — |
| EAST TIPPECANOE MIDDLE SCHOOL | 589 | 9 | Clean |
| MINTONYE ELEMENTARY SCHOOL | 548 | 8 | — |
| SOUTHWESTERN MIDDLE SCHOOL | 491 | 8 | — |
| COLE ELEMENTARY SCHOOL | 363 | 1 | — |
| WILDCAT HIGHLANDS | 360 | 362 | — |
| WAINWRIGHT MIDDLE SCHOOL | 340 | 4 | — |
| PRIMARY PRODUCTS INGREDIENTS AMERICAS | 336 | 8 | — |
| TIPPECANOE CO. AMPHITHEATER | 325 | 57 | — |
| SUNRISE CHRISTIAN CHURCH | 303 | 22 | — |
| THE BARN | 300 | 18 | — |
| GATHERING ACRES EVENT CENTER | 300 | 33 | — |
| KOREAN PRESBYTERIAN CHURCH | 250 | 48 | — |
| VICTORY CHRISTIAN CENTER | 200 | 31 | — |
| SHADELAND MOBILE HOME PARK | 200 | 243 | — |
| LIGHTHOUSE BAPTIST CHURCH | 188 | 15 | — |
| ROMNEY GO MART LLC | 178 | 511 | — |
| CAMP SYCAMORE VALLEY PUMP HOUSE II | 150 | 23 | — |
| HEARTLAND COMMUNITY CHURCH | 135 | 15 | — |
| LEGADO DEVELOPMENT STRIP MALL | 134 | 95 | — |
| BIG FISH N CAMPGROUND, INC. - HOUSE | 132 | 39 | — |
| BIG FISH N CAMPGROUND, INC. - RV PARK | 132 | 3 | — |
| CROSSROADS CHRISTIAN CHURCH | 123 | 114 | — |
| AMERICUS RESTAURANT & BAR | 116 | 203 | — |
| LAFAYETTE A-OK CAMPGROUND | 115 | 107 | — |
| ALLOY CUSTOM PRODUCTS, LLC | 110 | 21 | — |
| MODERNAIRE TRAILER COURT | 105 | 179 | — |
| DOLLAR GENERAL - WEST POINT | 103 | 12 | — |
| NEW JOURNEY FARMS LLC WEDDING VENUE | 101 | 8 | — |
| WOLF PARK, INC. | 100 | 65 | — |
| INDUSTRIAL PALLET CORP | 100 | 417 | — |
| WEST LAFAYETTE APOSTOLIC CHRISTIAN CHURC | 100 | 18 | — |
| THE BLESSING BARN | 100 | 0 | — |
| MCGRAWS STEAK & CHOP HOUSE | 100 | 289 | — |
| ROYAL OAKS ESTATES LLC | 95 | 65 | — |
| ROSS HILLS PARK - WEST WELL | 94 | 16 | — |
| KINGS RIDGE HOMEOWNERS ASSOCIATION | 90 | 22 | — |
| STIDHAM UMC | 86 | 34 | — |