We found 155 public water systems in Gratiot county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Alma, City Of | Alma | 9,182 | 0 | 0 |
| St. Louis, City Of | St. Louis | 6,976 | 0 | 2 |
| Wal-mart #1422 | Alma | 4,500 | 0 | 0 |
| Ithaca, City Of | Ithaca | 3,098 | 0 | 4 |
| Mdot -ithaca, R632 | Alma | 1,463 | 0 | 5 |
| Breckenridge, Village Of | Breckenridge | 1,339 | 0 | 1 |
| Speedway Superamerica #3585 | Alma | 1,120 | 0 | 0 |
| Speedway #8704 | Alma | 1,090 | 0 | 0 |
| Fulton Schools | Middleton | 850 | 0 | 35 |
| Alma Cinemas | Alma | 750 | 0 | 0 |
| Blarney Castle Oil Co | Middleton | 750 | 0 | 3 |
| Carters Food Center | Lake City | 750 | 0 | 0 |
| Reed Park | Ithaca | 700 | 0 | 1 |
| Ashley, Village Of | Ashley | 526 | 0 | 11 |
| Taco Bell | Alma | 500 | 0 | 4 |
| Big Boy | Alma | 500 | 0 | 5 |
| Ponderosa Restaurant | Alma | 500 | 0 | 0 |
| Scotsdale Estates Mobile Home Park | County of Gratiot | 472 | 0 | 0 |
| Perrinton, Village Of | Perrinton | 439 | 0 | 4 |
| Amazing Grace Church | Breckenridge | 400 | 0 | 3 |
| Hubscher Park | Ithaca | 400 | 0 | 1 |
| Mdot - Alma, R633 | County of Gratiot | 400 | 0 | 0 |
| Church Of God Campground | St Louis | 340 | 0 | 3 |
| Mackenzie Party Store | Alma | 300 | 0 | 2 |
| Jj Ruby's | Ithaca | 300 | 0 | 7 |
| Bannister Bar | Bannister | 300 | 0 | 0 |
| Citgo | Alma | 300 | 0 | 4 |
| Church Of Christ | St. Louis | 300 | 0 | 2 |
| Youth For Chirst | Alma | 250 | 0 | 1 |
| Middleton Diner | Middleton | 250 | 0 | 3 |
| Cattle Run Cafe' | St Louis | 250 | 0 | 3 |
| Newark Mennonite Church | Ithaca | 250 | 0 | 0 |
| Arby's Roast Beef #6439 | Alma | 200 | 0 | 4 |
| Francesco's | St. Louis | 200 | 0 | 3 |
| New Haven Church Of The Brethren | Middleton | 200 | 0 | 0 |
| Mc Donald Camp | County of Gratiot | 200 | 0 | 0 |
| Dunkin Donuts (now A Bank) | County of Gratiot | 200 | 0 | 0 |
| Seville Community Church Of God | Elwell | 170 | 0 | 5 |
| North Star Golf Course | Ithaca | 150 | 0 | 5 |
| East Washington Church | Ashley | 150 | 0 | 0 |
| Tri-pointe Plaza | Alma | 150 | 0 | 13 |
| Greta's Kitchen | County of Gratiot | 150 | 0 | 0 |
| Reed Park | County of Gratiot | 150 | 0 | 0 |
| Oasis Community Church | Ithaca | 145 | 0 | 0 |
| Lincoln Road United Methodist | Riverdale | 140 | 0 | 7 |
| Fulton Alternative Educ Sch | Middleton | 135 | 0 | 2 |
| Garr Tool Co | Alma | 135 | 0 | 0 |
| Forest Hill Church Of Christ | Alma | 100 | 0 | 0 |
| The Country Bakery | Middleton | 100 | 0 | 0 |
| Riverdale Tavern | Riverdale | 100 | 0 | 0 |
| Quick Sav #13 | Ithaca | 100 | 0 | 0 |
| The Fields | Ithaca | 100 | 0 | 0 |
| St. Cyril Catholic Church | Bannister | 100 | 0 | 0 |
| Wildwood Mennonite Church | Perrinton | 100 | 0 | 0 |
| Janson Equipment Co. | Breckenridge | 100 | 0 | 0 |
| Edgewood Church Of God | Ithaca | 100 | 0 | 0 |
| Advance Auto | Alma | 100 | 0 | 0 |
| Blarney Castle Oil Co | Alma | 100 | 0 | 0 |
| Cross Roads Bar & Grill | Alma | 100 | 0 | 0 |
| 300 Bowl | County of Gratiot | 100 | 0 | 0 |
| Bethel Mennonite Church | County of Gratiot | 100 | 0 | 0 |
| Gratiot County Office Building | County of Gratiot | 100 | 0 | 0 |
| Seifert Family Restaurant | County of Gratiot | 100 | 0 | 0 |
| 300 Bowl | Alma | 100 | 0 | 0 |
| Pompeii Bar | Pompeii | 100 | 0 | 0 |
| Club Rox | Alma | 100 | 0 | 0 |
| Good Shepherd Church | Alma | 99 | 0 | 0 |
| Nesen's Countryside Acres | County of Gratiot | 95 | 0 | 0 |
| Countryside Christian School | Ithaca | 90 | 0 | 0 |
| Woodland Estates | County of Gratiot | 85 | 0 | 0 |
| Mcdonald Camp #2 29-0020 | County of Gratiot | 84 | 0 | 0 |
| Immanuel Lutheran Church | Wheeler | 80 | 0 | 0 |
| Mcdonald Camp #1 29-0011 | County of Gratiot | 80 | 0 | 0 |
| Timber Country Mobile Home Park | County of Gratiot | 75 | 0 | 0 |
| Vfw Post | St. Louis | 75 | 0 | 0 |
| Hidden Oaks Golf Course | St Louis | 75 | 0 | 0 |
| Sumner Ctr Church Of Naz. | Sumner | 75 | 0 | 0 |
| New Haven Church Of God | Sumner | 70 | 0 | 0 |
| Seville Church Of God | County of Gratiot | 65 | 0 | 0 |
| Newark Township Hall | County of Gratiot | 60 | 0 | 0 |
| Diana's Catering | Perrinton | 50 | 0 | 0 |
| Family Farm And Home | Alma | 50 | 0 | 0 |
| The Laurels Of Fulton | County of Gratiot | 50 | 0 | 0 |
| M-46 Market And Gas | Riverdale | 50 | 0 | 0 |
| Woodridge Inn | Alma | 50 | 0 | 0 |
| Dave's Diner And Dairy | St. Louis | 50 | 0 | 0 |
| Admiral Fuel Station #169 | Alma | 50 | 0 | 0 |
| Ghost Town Saloon | Elwell | 50 | 0 | 0 |
| Cloverleaf | County of Gratiot | 50 | 0 | 0 |
| Mdnr Construction Trailer Site | County of Gratiot | 50 | 0 | 0 |
| Andrews Bottled Magnetic Water | County of Gratiot | 50 | 0 | 0 |
| Manna Foods | Riverdale | 50 | 0 | 0 |
| Just-in-time Campground | Ithaca | 45 | 0 | 0 |
| Los Amigos | County of Gratiot | 45 | 0 | 0 |
| Twin Cities Sda Church | Alma | 45 | 0 | 0 |
| Bailey Building | Alma | 42 | 0 | 0 |
| John The Caterer | Ashley | 40 | 0 | 0 |
| Bible Missionary Church | County of Gratiot | 40 | 0 | 0 |
| Seventh Day Adventist School | County of Gratiot | 40 | 0 | 0 |
| Camp Monroe | County of Gratiot | 40 | 0 | 0 |
| Riverdale Sda Church | County of Gratiot | 35 | 0 | 0 |
| Skytop Drive In | County of Gratiot | 35 | 0 | 0 |
| Bannister Elementary School | County of Gratiot | 35 | 0 | 0 |
| Phillips Centennial Orchards | County of Gratiot | 35 | 0 | 0 |
| Marr Camp | County of Gratiot | 32 | 0 | 0 |
| S & N Pizzeria Inc. | Middleton | 30 | 0 | 0 |
| North Star Tavern | North Star | 30 | 0 | 0 |
| Alma Comfortable Inn | Alma | 30 | 0 | 0 |
| Alma Community Of Christ | Alma | 30 | 0 | 0 |
| Bcw Happy Hour Bar | Bannister | 30 | 0 | 0 |
| Leisure Lake Family Campground, Inc. | Sumner | 30 | 0 | 0 |
| Lumberjack Park | County of Gratiot | 30 | 0 | 0 |
| Smiths Drive In | County of Gratiot | 30 | 0 | 0 |
| Alfred Goward | County of Gratiot | 30 | 0 | 0 |
| Cooks Duck Inn | County of Gratiot | 30 | 0 | 0 |
| Bill's Kitchen | Riverdale | 30 | 0 | 0 |
| Clinton County Road Commission | County of Gratiot | 30 | 0 | 0 |
| Forest Hill Nature Area | Alma | 25 | 0 | 0 |
| Fulton Township Hall | Perrinton | 25 | 0 | 0 |
| Sumner Community Center | Sumner | 25 | 0 | 0 |
| Litwillers Catering | Perrinton | 25 | 0 | 0 |
| Nay's Bamboo Kitchen | Alma | 25 | 0 | 0 |
| The Store | Elm Hall | 25 | 0 | 0 |
| Wilson's Grocery | Sumner | 25 | 0 | 0 |
| Martin's Corner Store | Wheeler | 25 | 0 | 0 |
| Kenny Inc. | Merill | 25 | 0 | 0 |
| Mud Hen Expresso | Grayling | 25 | 0 | 0 |
| United Methodist Church | County of Gratiot | 25 | 0 | 0 |
| Pompeii Bar | County of Gratiot | 25 | 0 | 0 |
| Emerson Presbyterian Church | County of Gratiot | 25 | 0 | 0 |
| Gilbert Sales | Breckenridge | 25 | 0 | 0 |
| Fastenal | Alma | 25 | 0 | 0 |
| Eagle Brook Golf Course | Middleton | 25 | 0 | 0 |
| Lafayette Presbyterian Church | County of Gratiot | 25 | 0 | 0 |
| Artesian Well House Inc | Elwell | 25 | 0 | 0 |
| Maranatha United Brethren Chur | County of Gratiot | 25 | 0 | 0 |
| Peoples Assembly Of God | County of Gratiot | 25 | 0 | 0 |
| Lighthouse Baptist Church | County of Gratiot | 25 | 0 | 0 |
| Sumner Township Park | County of Gratiot | 25 | 0 | 0 |
| Pine River Recreation Club | County of Gratiot | 25 | 0 | 0 |
| Half Moon Lake Campground | County of Gratiot | 25 | 0 | 0 |
| Free Methodist Church | County of Gratiot | 25 | 0 | 0 |
| Campers Park | County of Gratiot | 25 | 0 | 0 |
| River Country Campground | County of Gratiot | 25 | 0 | 0 |
| Wolohan Lumber | County of Gratiot | 25 | 0 | 0 |
| Peace Lutheran Church | County of Gratiot | 25 | 0 | 0 |
| Fulton Middle School | County of Gratiot | 25 | 0 | 0 |
| Mott's State Rd. Bldg./l. Mott | County of Gratiot | 25 | 0 | 0 |
| Half Moon Lake Campground Inc | County of Gratiot | 25 | 0 | 0 |
| Gratiot Humane Society | County of Gratiot | 25 | 0 | 0 |
| Peticoat Inn | County of Gratiot | 25 | 0 | 0 |
| Comfort Inn & Shifters | County of Gratiot | 25 | 0 | 0 |
| Roggy Road Camp | County of Gratiot | 25 | 0 | 0 |
| Stedman Chiropractic Center | St. Louis | 25 | 0 | 0 |
| Gratiot Area Water Authority | County of Gratiot | 0 | 0 | 0 |