We found 21 public water systems that could serve the same population as Oak Beach County Day Use (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Duggan's Family Cg-main Wells | Port Austin | 885 | 0 | 2 |
| Hillcrest Condominium Assn. | Port Austin | 600 | 0 | 8 |
| Dnr Port Crescent, West Service | Port Austin | 465 | 0 | 0 |
| Dnr Port Crescent, Beach | Port Austin | 400 | 0 | 0 |
| Dnr Port Crescent Sp-lot A | Port Austin | 400 | 0 | 0 |
| U & I Community Center | Port Austin | 320 | 0 | 4 |
| Oak Beach County Park Cg | Port Austin | 250 | 0 | 4 |
| Mdot - Jenks, P609 | Port Austin | 225 | 0 | 1 |
| Cedar Grove Tavern, Inc | Port Austin | 200 | 0 | 0 |
| Breakers On The Bay-kitchen | Port Austin | 200 | 0 | 0 |
| Dnr Port Crescent , East Service | Port Austin | 150 | 0 | 0 |
| Lakeshore Pines R.v. Park | Port Austin | 150 | 0 | 7 |
| Port Crescent Bar | Port Austin | 120 | 0 | 0 |
| Mcgraw Park | Port Austin | 100 | 0 | 0 |
| Sandy Dunes Adventure Golf | Port Austin | 100 | 0 | 0 |
| Oak Beach Sports Bar | Port Austin | 100 | 0 | 0 |
| Breakers On The Bay-motel | Port Austin | 100 | 0 | 0 |
| Bird Creek Golf Club | Port Austin | 85 | 0 | 0 |
| The Farm Restaurant | Port Austin | 80 | 0 | 0 |
| Fireside Inn | Port Austin | 75 | 0 | 0 |
| Huron Regional Water Authority | Bad Axe, Port Austin | 0 | 0 | 0 |