| Stonington Institute - Main Building | North Stonington, CT | 77 | 89 | - |
| Stonington Institute - North Building | North Stonington, CT | 77 | 8 | - |
| Stonington Institute - Knollwood | North Stonington, CT | 77 | 39 | - |
| Stonington Institute - Lodge | North Stonington, CT | 77 | 7 | - |
| Hopkins Supply | Warren, CT | 77 | 430 | - |
| Ctwc - Birchwood Heights | Clinton, CT | 76 | 50 | - |
| Middlebury Commons | Middlebury, CT | 76 | 222 | - |
| Aquarion-Berkshire | Shelton, CT | 75 | 19 | - |
| Newport Academy (Todd Hill) | Watertown, CT | 75 | 0 | - |
| Candlewood Inn | Brookfield, CT | 75 | 46 | - |
| Charlie Brown Campground | Eastford, CT | 75 | 11 | - |
| Charlie Brown Campground-Rec Hall | Eastford, CT | 75 | 55 | - |
| Masonic Temple Assn of East Hampton | East Hampton, CT | 75 | 66 | - |
| Middlebury Hamlet | Prospect, CT | 75 | 110 | Clean |
| A Behavioral Approach | Clinton, CT | 75 | 0 | - |
| Bst Systems, Inc. | Plainfield, CT | 75 | 0 | - |
| Hidden Acres Campground | Preston, CT | 75 | 31 | - |
| Comcast of CT/GA/MA/NH/NY/NC/VA/VT, LLC | Berlin, CT | 75 | 30 | - |
| Stafford Springs Kingdom Hall | Stafford Springs, CT | 75 | 6 | - |
| The Weston Field Club - Well #2 | Weston, CT | 75 | 256 | - |
| L.c. Doane Co. | Ivoryton, CT | 74 | 11 | - |
| Ashland Pond Mobile Home Park | Norwich, CT | 74 | 256 | - |
| 283 Litchfield RD, LLC | Harwinton, CT | 74 | 387 | - |
| Brightpath Madison - West | Madison, CT | 73 | 265 | - |
| Smt Corporation | Sandy Hook, CT | 73 | 71 | - |
| North Purchase Elderly Housing | Bethlehem, CT | 72 | 96 | - |
| Woodcreek Village Condominium Assn, Inc | Danbury, CT | 72 | 185 | - |
| Oak Grove Senior Housing Corp | Rocky Hill, CT | 72 | 10 | - |
| Essex Gardens | Fairfield, CT | 72 | 297 | - |
| Cranberry Bog Apartments | Danielson, CT | 72 | 269 | - |
| Round Hill LLC - Well# 1&2 | Griswold, CT | 72 | 226 | - |
| Stix N Stones Marketplace | Storrs, CT | 72 | 0 | - |
| Lakeside Manor Apartments | Stamford, CT | 72 | 217 | - |
| Mayflower Spa | Washington, CT | 72 | 0 | - |
| Aquarion-Woodrich Village | Shelton, CT | 72 | 177 | Detected |
| Woodbury Place Condominium Assn | Southbury, CT | 72 | 164 | - |
| Blondie's Country Diner | Bolton, CT | 70 | 14 | - |
| Roto Frank of America | Chester, CT | 70 | 127 | - |
| First Congregational Church of Lebanon | Lebanon, CT | 70 | 24 | - |
| Cozy Hills Campground Well #4 | Bantam, CT | 70 | 24 | - |
| Reynolds Subaru | Lyme, CT | 70 | 272 | - |
| Discovery Zone Learning Cntr Marlborough | Columbia, CT | 70 | 109 | - |
| Marina Cove | Uncasville, CT | 70 | 258 | - |
| Oakridge Gardens, LLC | West Mystic, CT | 70 | 695 | - |
| State Police Barracks Troop E | Middletown, CT | 70 | 63 | - |
| Little Learners Children's Center | Oakdale, CT | 70 | 61 | - |
| Rocky Glen Mill | Brooklyn, CT | 70 | 564 | - |
| Wood Pond (West 1&2) | North Stonington, CT | 70 | 19 | - |
| Second Baptist Church | North Stonington, CT | 70 | 116 | - |
| Old Lyme Marketplace | Guilford, CT | 70 | 221 | - |