We found 38 public water systems that could serve the same population as St Marks Catholic Church (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Grand Blanc, City Of | Grand Blanc | 8,276 | 0 | 2 |
| Atlas Valley Golf Club | Grand Blanc | 300 | 0 | 19 |
| Discovery Montessori School | Grand Blanc | 250 | 0 | 0 |
| Cobblestone Bar & Grille | Grand Blanc | 250 | 0 | 7 |
| Grand Blanc Moose Lodge | Grand Blanc | 250 | 0 | 6 |
| Al Serra Auto Plaza | Grand Blanc | 250 | 0 | 0 |
| New Life Christian Fellowship | Grand Blanc | 225 | 0 | 0 |
| Grand Blanc Pks Well #1 | Grand Blanc | 200 | 0 | 0 |
| Grand Blanc Court & Fitness | Grand Blanc | 200 | 0 | 0 |
| Flint Bowmens Club, Inc. | Grand Blanc | 175 | 0 | 4 |
| Courtyard Cafe And Grill | Grand Blanc | 150 | 0 | 0 |
| Knights Inn | Grand Blanc | 120 | 0 | 0 |
| Flint Elks #222 Country Club | Grand Blanc | 100 | 0 | 0 |
| Warwick Hills Country Club | Grand Blanc | 100 | 0 | 0 |
| Papa Johns/attorney Offices | Grand Blanc | 100 | 0 | 0 |
| Grand Blanc Recreation Complex | Grand Blanc | 100 | 0 | 0 |
| Speedway Superamerica | Grand Blanc | 100 | 0 | 0 |
| Mike's Tavern | Grand Blanc | 100 | 0 | 0 |
| Bordine's Nursery | Grand Blanc | 100 | 0 | 0 |
| South Mundy United Methodist | Grand Blanc | 90 | 0 | 0 |
| Terry Matlock Child Care | Grand Blanc | 88 | 0 | 0 |
| Brickstreet Bar & Grill | Grand Blanc | 80 | 0 | 0 |
| El Potrero | Grand Blanc | 75 | 0 | 0 |
| A Taste Of Heaven | Grand Blanc | 75 | 0 | 0 |
| Phoenix United Methodist Churc | Grand Blanc | 65 | 0 | 0 |
| Ottawa Hills Cabana Club | Grand Blanc | 55 | 0 | 0 |
| Catellus Corp./ware Tech | Grand Blanc | 50 | 0 | 0 |
| Genesys-gd.blanc Phys.medicine | Grand Blanc | 50 | 0 | 0 |
| King Steel | Grand Blanc | 50 | 0 | 0 |
| Genesee Hills Golf Club | Grand Blanc | 50 | 0 | 0 |
| Tony's Kwik Mart | Grand Blanc | 50 | 0 | 0 |
| Atlas Valley Pool Well | Grand Blanc | 40 | 0 | 0 |
| Grand Blanc Office Partnership | Grand Blanc | 31 | 0 | 0 |
| C.h.m.p. | Grand Blanc | 31 | 0 | 0 |
| Georgie's Market | Grand Blanc | 25 | 0 | 0 |
| Office Bldg Mgr | Grand Blanc | 25 | 0 | 0 |
| Tanglewood Building Assoc. | Grand Blanc | 25 | 0 | 0 |
| Warwick Market | Grand Blanc | 25 | 0 | 0 |