| Renwood Apartments | Montvale, CT | 190 | 144 | - |
| Country Club of New Canaan (Main Well) | New Canaan, CT | 190 | 301 | - |
| Discovery Zone Learning Cntr Columbia | Columbia, CT | 189 | 29 | - |
| Aquarion-East Hampton | Shelton, CT | 189 | 5 | - |
| Ctwc - Country Mobile Div. | Clinton, CT | 186 | 218 | - |
| Crystal Lake Condominiums | Mystic, CT | 184 | 432 | - |
| 171 Amity Road | Bethany, CT | 180 | 246 | - |
| St. Clements Marina | Portland, CT | 180 | 0 | - |
| YMCA - Camp Mountain Laurel | New Haven, CT | 180 | 63 | - |
| Curtis Packaging | Sandy Hook, CT | 180 | 31 | - |
| Brightpath - Redding | Redding, CT | 180 | 131 | - |
| Waterford Country School, Inc. | Quaker Hill, CT | 180 | 305 | - |
| Woodstock Meadows Condominium Assn. | Woodstock, CT | 180 | 70 | - |
| Ctwc - Riversedge Division | Clinton, CT | 179 | 25 | - |
| Linemaster Switch Corp | Woodstock, CT | 178 | 149 | - |
| Mallard Cove Condominium Assn. | East Hampton, CT | 177 | 262 | - |
| Bakerville Consolidated School | New Hartford, CT | 177 | 58 | - |
| Orchard Acres Association | East Hartford, CT | 176 | 61 | - |
| Waterview Business Park | Stonington, CT | 176 | 27 | - |
| Baxter Farms Community Water Assoc | Tolland, CT | 175 | 31 | - |
| Shaker Heights Water Company | Enfield, CT | 172 | 41 | - |
| Carefree Homeowners Association | Lebanon, CT | 172 | 334 | - |
| Church of Latter Day Saints, Madison | Cromwell, CT | 172 | 0 | - |
| Colebrook Consolidated School | Colebrook, CT | 170 | 61 | - |
| Precious Memories Daycare Center | Mystic, CT | 169 | 22 | - |
| Ctwc - Crystal Springs Div. | Clinton, CT | 169 | 9 | - |
| Kettletown S.p./Beach Well | Portland, CT | 167 | 34 | - |
| Kettletown S.p./Campground Well | Portland, CT | 167 | 27 | - |
| Ctwc - Sachem Village Condo | Clinton, CT | 166 | 9 | - |
| Marlborough Health Care Center, Inc | Marlborough, CT | 165 | 142 | - |
| Grace Community Church | New Canaan, CT | 165 | 0 | - |
| Scwa, Chriswood Division (Cwd) | Gales Ferry, CT | 164 | 2 | - |
| Aquarion-Dean Heights | Shelton, CT | 162 | 180 | - |
| Ctwc - Northern Reg-Nathan Hale System | Clinton, CT | 160 | 6 | - |
| Grower Direct Farms Inc | Somers, CT | 160 | 80 | - |
| 55 Sugar Street | Sandy Hook, CT | 158 | 600 | - |
| Kindercare Learning Center Inc. | Bethel, CT | 157 | 80 | - |
| Tri-State Baptist Church | Thompson, CT | 157 | 22 | - |
| Twin Hills Water District | Bolton, CT | 156 | 60 | - |
| Hawthorne Terrace Assoc | Danbury, CT | 156 | 170 | - |
| Dd Durham | Old Saybrook, CT | 156 | 10 | - |
| Columbia Manufacturing - Well #2 | Columbia, CT | 155 | 299 | - |
| Lisbon Mobile Homes | Las Vegas, CT | 155 | 34 | - |
| East Haddam Municipal Center | Moodus, CT | 154 | 512 | - |
| Ctwc - Westchester East | Clinton, CT | 153 | 349 | - |
| Maplewood-Millbrook Apartments | Storrs, CT | 153 | 105 | - |
| Ctwc - Uconn Depot Div. | Clinton, CT | 153 | 0 | - |
| Campbell Heights Apartments | Norwich, CT | 152 | 71 | - |
| Aquarion-Ken Oaks | Shelton, CT | 152 | 21 | - |
| Aquarion-Twin Oaks | Shelton, CT | 152 | 61 | - |