We found 24 public water systems that could serve the same population as Advanced Office Systems (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Middletown Water Department | Cromwell, Middlefield, Middletown | 41,019 | 37 | 5 |
| Cromwell Fire District Water Department | Berlin, Cromwell | 14,316 | 22 | 62 |
| Pumpkin Patch Childcare& Learning Center | Cromwell | 133 | 0 | 0 |
| Convenience Store | Cromwell | 100 | 0 | 0 |
| 227 & 229 Shunpike Road | Cromwell | 41 | 0 | 0 |
| L & C Assoc. | Cromwell | 30 | 0 | 0 |
| Cromwell Fire Dept | Cromwell | 26 | 0 | 0 |
| Shell Oil Company | Cromwell | 25 | 0 | 0 |
| Cromwell Mobile | Cromwell | 25 | 0 | 0 |
| Cromwell Army Reserve | Cromwell | 25 | 0 | 0 |
| Bobs Waste Removal Inc | Cromwell | 25 | 0 | 0 |
| Bishops Garage | Cromwell | 25 | 0 | 0 |
| Arborio Corp | Cromwell | 25 | 0 | 0 |
| 7-eleven Cromwell | Cromwell | 25 | 0 | 0 |
| Sibi Brancifort Construction Co | Cromwell | 25 | 0 | 0 |
| Cost Cutter Warehouse Liquor | Cromwell | 25 | 0 | 0 |
| Rockly Hill Vault | Cromwell | 25 | 0 | 0 |
| Parisian Beauty Salon | Cromwell | 25 | 0 | 0 |
| Digger Mcduffs Tavern | Cromwell | 25 | 0 | 0 |
| Cromwell | 25 | 0 | 0 | |
| Freihofers Baking | Cromwell | 25 | 0 | 0 |
| Cromwell | 25 | 0 | 0 | |
| Cromwell X-tra Mart | Cromwell | 25 | 0 | 0 |
| King Yung Chinese Restaurant | Cromwell | 1 | 0 | 0 |