We found 18 public water systems in Divide county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Crosby City Of | Crosby | 1,406 | 0 | 0 |
| Fortuna Air Force Base | County of Divide | 142 | 0 | 0 |
| Noonan City Of | Noonan | 121 | 0 | 0 |
| Ambrose City Of | County of Divide | 109 | 0 | 0 |
| Noonan City Well 1 (coffee) | County of Divide | 100 | 0 | 0 |
| Crosby Coffee Well | County of Divide | 100 | 0 | 0 |
| Fortuna Border Station | County of Divide | 100 | 0 | 0 |
| Ambrose Community Well | Ambrose | 75 | 0 | 0 |
| Divide Co. School District | County of Divide | 40 | 0 | 0 |
| Fortuna City Of | Fortuna | 35 | 0 | 0 |
| U.s. Port Of Entry-noonan | County of Divide | 30 | 0 | 0 |
| Crosby Country Club | County of Divide | 30 | 0 | 0 |
| Dewitt Well | County of Divide | 30 | 0 | 0 |
| Us Port Of Entry | County of Divide | 28 | 0 | 0 |
| WRITING ROCK STATE HISTORIC SITE | County of Divide | 25 | 0 | 0 |
| Crosby Jack & Jill | County of Divide | 25 | 0 | 0 |
| Power Creamery | County of Divide | 25 | 0 | 0 |
| Bdw Rural Water | County of Divide | 0 | 0 | 0 |