We found 267 public water systems that could serve the same population as Knox Lumber Co. (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Billings City Of | Billings | 114,000 | 33 | 4 |
| Co Water Dist Of Billings Heights | Billings | 12,000 | 30 | 3 |
| Laurel Municipal Water System | Laurel | 6,339 | 0 | 59 |
| Lockwood Water And Sewer District | Billings | 5,900 | 0 | 4 |
| Rocky Mountain College | Billings | 5,600 | 0 | 3 |
| Montana State University Billings | Billings | 3,818 | 0 | 0 |
| Billings Career Center | County of Yellowstone | 1,560 | 0 | 0 |
| WORDEN COMMUNITY WUA | County of Yellowstone | 1,400 | 0 | 0 |
| Msu - Billings College Of Technology | Billings | 1,291 | 0 | 0 |
| Shepherd Schools | Shepherd | 1,000 | 0 | 0 |
| Beartooth Partners Llc | Billings | 908 | 0 | 0 |
| Pioneer Water Service | Billings | 900 | 0 | 11 |
| WORDEN BALLANTINE YELLOWSTONE | Ballantine, Worden | 800 | 0 | 100 |
| Meadowlark Mobile Home Court | Billings | 800 | 0 | 16 |
| Shepherd Schools | Shepherd | 800 | 0 | 8 |
| Fisher Water Service | Billings | 750 | 0 | 19 |
| Hillside Village | Billings | 650 | 0 | 29 |
| Cherry Creek Manif Home Park | Billings | 600 | 31 | 7 |
| Travel Centers Of America Truck Plaza | Laurel | 600 | 0 | 6 |
| Cedar Park Water Plant | Billings | 600 | 0 | 0 |
| YELLOWSTONE WATER SERVICE | County of Yellowstone | 600 | 0 | 0 |
| Windsor Estates | Billings | 530 | 0 | 33 |
| Magic City Speedway | Billings | 450 | 0 | 0 |
| Laurel Golf Club | Laurel | 423 | 0 | 2 |
| Custer Rest Area Westbound | Billings | 400 | 0 | 12 |
| Custer Rest Area Eastbound | Billings | 400 | 0 | 6 |
| Shepherd High School & Annex | County of Yellowstone | 400 | 0 | 0 |
| Shepherd Elementary School | County of Yellowstone | 400 | 0 | 0 |
| Pryor Creek Water Assn | Huntley | 375 | 0 | 54 |
| Elder Grove School Buildings 1 & 2 | Billings | 360 | 0 | 3 |
| Hidden Lake Yellowstone County W And S D | Billings | 350 | 0 | 81 |
| South Hills Water And Sewer Dist | Billings | 350 | 0 | 0 |
| ZOOMONTANA INC | Billings | 324 | 0 | 15 |
| Emerald View Park | Billings | 320 | 0 | 4 |
| Coffee Mill | Billings | 312 | 0 | 0 |
| Rutts Inc | Laurel | 300 | 0 | 4 |
| Peter Yegen Jr Golf Club | Billings | 300 | 0 | 22 |
| Emmanuel Baptist Church | Billings | 300 | 0 | 0 |
| The Horse Palace | County of Yellowstone | 300 | 0 | 0 |
| Camelot Ranch Event Center Unapproved | Billings | 300 | 0 | 0 |
| Second Shift Bar | Billings | 300 | 0 | 0 |
| Pictograph Cave State Park | Billings | 250 | 0 | 7 |
| Granite Park Water Association | Billings | 250 | 0 | 10 |
| New Life Church | Billings | 250 | 0 | 31 |
| Precision Water | Billings | 250 | 0 | 5 |
| Shepherd Old High School | County of Yellowstone | 250 | 0 | 0 |
| YELLOWSTONE BOYS AND GIRLS RANCH | Billings | 240 | 0 | 93 |
| Wells Garden Estates | Billings | 240 | 0 | 93 |
| Huntley Yellowstone Co Water And Sewer | Huntley | 230 | 0 | 15 |
| Crystal Springs Water System | Billings | 225 | 0 | 139 |
| Reliable Water Service | Billings | 225 | 0 | 16 |
| Western Ranch Supply | Billings | 215 | 0 | 6 |
| Torres Cafe | Billings | 200 | 0 | 42 |
| Broadview Town Of | Broadview | 200 | 0 | 72 |
| Market Basket Store | Billings | 200 | 0 | 11 |
| Canyon Creek School District 4 | Billings | 200 | 0 | 24 |
| Oak Ridge Estates | Billings | 200 | 0 | 82 |
| Eagle Rock Golf Course | Billings | 200 | 0 | 26 |
| Five Corners Kwik Stop | Billings | 200 | 0 | 0 |
| Gus Bender's Auction Market | County of Yellowstone | 200 | 0 | 0 |
| Blue Creek School Dist 3 | Billings | 198 | 0 | 8 |
| Emmanuel Lutheran Church | County of Yellowstone | 180 | 0 | 0 |
| Sunhaven Mobile Home Park | Laurel | 160 | 0 | 13 |
| Saddleback Ridge Estates | Billings | 150 | 0 | 14 |
| Holiday Store No 280 | Billings | 150 | 0 | 0 |
| Market Basket | County of Yellowstone | 150 | 0 | 0 |
| Elysian School District No 23 | Billings | 150 | 0 | 0 |
| Adams Truck Stop | County of Yellowstone | 150 | 0 | 0 |
| Elder Grove School Building Five | Billings | 147 | 0 | 6 |
| Shiloh Village Mobile Hm Park | County of Yellowstone | 135 | 0 | 0 |
| Billings Christian Schools | Billings | 130 | 0 | 17 |
| First Student Inc | Billings | 130 | 0 | 85 |
| Hope Church | Billings | 130 | 0 | 0 |
| Golden Eagle Water Users Assn | Billings | 125 | 0 | 97 |
| Shepherd Junior High School | County of Yellowstone | 125 | 0 | 0 |
| Longbranch Casino | Ballantine | 120 | 0 | 0 |
| Eds Water Service Billings | Shepherd | 120 | 0 | 0 |
| Town And Country Lanes And Bar | Billings | 101 | 0 | 0 |
| Elder Grove School Old Elementary Bldg | Billings | 101 | 0 | 0 |
| Custer School Dist No 15 | Custer | 100 | 0 | 0 |
| Feedlot Steakhouse | Shepherd | 100 | 0 | 0 |
| Shepherd Water Station | Shepherd | 100 | 0 | 0 |
| Aldinger Acres Subdivision | Billings | 100 | 0 | 0 |
| Pompeys Pillar National Landmark | Pompeys Pillar | 100 | 0 | 0 |
| River Grove Estates Tr Ct | Billings | 100 | 0 | 0 |
| Fat Fender Freddys | Laurel | 100 | 0 | 0 |
| Pure-flo Inc - Purified | County of Yellowstone | 100 | 0 | 0 |
| Holiday Store #285 | County of Yellowstone | 100 | 0 | 0 |
| Pure-flo Inc - Distilled | County of Yellowstone | 100 | 0 | 0 |
| Pelican Rv Campground/bar | Laurel | 100 | 0 | 0 |
| Elder Grove School | County of Yellowstone | 100 | 0 | 0 |
| Sneeker Inn | County of Yellowstone | 100 | 0 | 0 |
| Valley Water Service | County of Yellowstone | 100 | 0 | 0 |
| Big Dipper Drive Inn | County of Yellowstone | 100 | 0 | 0 |
| Mountain View Colony | Broadview | 95 | 0 | 0 |
| Peks Mobile Home Court | Billings | 95 | 0 | 0 |
| Furniture Row Billings | Billings | 90 | 0 | 0 |
| Glentana Trailer Court | County of Yellowstone | 84 | 0 | 0 |
| Custer General Store | Custer | 82 | 0 | 0 |
| Halfway Club & Casino | County of Yellowstone | 75 | 0 | 0 |
| Custer Food Town | County of Yellowstone | 75 | 0 | 0 |
| Shepherd County Market | County of Yellowstone | 75 | 0 | 0 |
| Amusement Park Drive In | Laurel | 74 | 0 | 0 |
| Duck Creek Mobile Home Park | Billings | 70 | 0 | 0 |
| Billings Motor Sports Park | Billings | 70 | 0 | 0 |
| Emmanuel Lutheran Church | Shepherd | 70 | 0 | 0 |
| Pioneer School Dist 41 | Billings | 70 | 0 | 0 |
| Storybook Hollow | Billings | 70 | 0 | 0 |
| Fortis School | Billings | 70 | 0 | 0 |
| Cascade Campground | County of Yellowstone | 70 | 0 | 0 |
| Sunshine Academy The | Laurel | 65 | 0 | 0 |
| Arrow Creek Trailer Court | Billings | 65 | 0 | 0 |
| Clampitt's Trailer Court | County of Yellowstone | 65 | 0 | 0 |
| First Choice Water | Laurel | 65 | 0 | 0 |
| Slumberland Furniture | Billings | 64 | 0 | 0 |
| YELLOWSTONE ICE AND WATER | Billings | 61 | 0 | 0 |
| Pacific Steel And Recycling | Billings | 60 | 0 | 0 |
| Kid Corral Day Care | Shepherd | 60 | 0 | 0 |
| Fox Water Service Incorporated | Laurel | 60 | 0 | 0 |
| Kountry Kare Inc | Shepherd | 60 | 0 | 0 |
| Montana Peterbilt Billings | Billings | 60 | 0 | 0 |
| Blue Grass Water Users Association | Billings | 60 | 0 | 0 |
| Kids Kountry Childcare | County of Yellowstone | 60 | 0 | 0 |
| Kozy Korner Motel & Cafe | County of Yellowstone | 55 | 0 | 0 |
| YELLOWSTONE DRAG STRIP | Acton | 50 | 0 | 0 |
| Morin Elementary School | Billings | 50 | 0 | 0 |
| 3 North Bar And Grill | Acton | 50 | 0 | 0 |
| Double Diamond Subdivision Arbor Hills | Billings | 50 | 0 | 0 |
| Church Of Christ | Billings | 50 | 0 | 0 |
| Billings Good Earth Market | Billings | 50 | 0 | 0 |
| Blue Basket | County of Yellowstone | 50 | 0 | 0 |
| Red Barn Produce Inc. | County of Yellowstone | 50 | 0 | 0 |
| Sweetheart Bakery-laurel | County of Yellowstone | 50 | 0 | 0 |
| Sunburst Meadows | County of Yellowstone | 50 | 0 | 0 |
| Albertsons Blgs Grand Ave No 2021 | Billings | 50 | 0 | 0 |
| Smiths Food And Drug No 160 | Billings | 50 | 0 | 0 |
| Smiths Food And Drug Blgs No 161 | Billings | 50 | 0 | 0 |
| Basin Cg Well No 2 | County of Yellowstone | 50 | 0 | 0 |
| County Market Billings No 208 | Billings | 50 | 0 | 0 |
| Wells Garden Estates | County of Yellowstone | 50 | 0 | 0 |
| B&c Trailer Court | County of Yellowstone | 50 | 0 | 0 |
| Columbus Rest Areas E & W | County of Yellowstone | 50 | 0 | 0 |
| WORDEN BALLANTINE WATER & SEW. | County of Yellowstone | 50 | 0 | 0 |
| Mountain State Telephone | County of Yellowstone | 50 | 0 | 0 |
| Echo Inn | County of Yellowstone | 50 | 0 | 0 |
| Red Club Bar | County of Yellowstone | 50 | 0 | 0 |
| D-j Meat | County of Yellowstone | 50 | 0 | 0 |
| Dry Creek Meat | County of Yellowstone | 50 | 0 | 0 |
| King Avenue Meat | County of Yellowstone | 50 | 0 | 0 |
| Shiloh Barn | County of Yellowstone | 50 | 0 | 0 |
| Mary's Peek-a-boo Bar | County of Yellowstone | 50 | 0 | 0 |
| Laurel Slaughter Plant | County of Yellowstone | 50 | 0 | 0 |
| Riverside Park | County of Yellowstone | 50 | 0 | 0 |
| Project Meats | County of Yellowstone | 50 | 0 | 0 |
| Snack Shack | County of Yellowstone | 50 | 0 | 0 |
| Judy Jensen Day Care | County of Yellowstone | 50 | 0 | 0 |
| Quick Mart | County of Yellowstone | 50 | 0 | 0 |
| Mountain Bell | County of Yellowstone | 50 | 0 | 0 |
| Sweetheart Bakery | County of Yellowstone | 50 | 0 | 0 |
| Red Barn Produce Inc. | County of Yellowstone | 50 | 0 | 0 |
| Knox Lumber Company | County of Yellowstone | 50 | 0 | 0 |
| Blue Basket | County of Yellowstone | 50 | 0 | 0 |
| Quick Mart | County of Yellowstone | 50 | 0 | 0 |
| Sage View 4 Drive In Theater | County of Yellowstone | 50 | 0 | 0 |
| Quick Mart | County of Yellowstone | 50 | 0 | 0 |
| All Trails Koa | County of Yellowstone | 50 | 0 | 0 |
| Suds Hut | County of Yellowstone | 50 | 0 | 0 |
| School District #52 | County of Yellowstone | 49 | 0 | 0 |
| Blue Creek Mobile Home Court | County of Yellowstone | 45 | 0 | 0 |
| Red Rooster Bar | Shepherd | 40 | 0 | 0 |
| Mickeys The | Shepherd | 40 | 0 | 0 |
| Primo Refill Wal-mart No 1956 | Billings | 40 | 0 | 0 |
| Primo Refill Wal-mart Heights | Billings | 40 | 0 | 0 |
| American Water Technologies | Billings | 40 | 0 | 0 |
| Ratine Campground Well #2 | County of Yellowstone | 40 | 0 | 0 |
| Woodbine Cg Upper Well No 1 | County of Yellowstone | 40 | 0 | 0 |
| R & R Trailer Court Blgs | County of Yellowstone | 35 | 0 | 0 |
| Duck Creek Tr Ct - Well #2 | County of Yellowstone | 35 | 0 | 0 |
| Duck Creek Trailer Court | County of Yellowstone | 35 | 0 | 0 |
| School District #2-shiloh | County of Yellowstone | 32 | 0 | 0 |
| Pryor Creek Bar And Cafe | Huntley | 30 | 0 | 0 |
| Junction City Saloon | Custer | 30 | 0 | 0 |
| Albertsons Blgs No 2047 | Billings | 30 | 0 | 0 |
| Albertsons Blgs No 2027 | Billings | 30 | 0 | 0 |
| Albertsons Blgs Central No 2030 | Billings | 30 | 0 | 0 |
| Albertsons Blgs Grand Ave No 2041 | Billings | 30 | 0 | 0 |
| Cop Construction Llc | Billings | 30 | 0 | 0 |
| Singer Shack | Billings | 30 | 0 | 0 |
| Culligan Billings Heights | Billings | 30 | 0 | 0 |
| Bronco Trailer Court | County of Yellowstone | 30 | 0 | 0 |
| Emerald Lake Cg N Well No 2 | County of Yellowstone | 30 | 0 | 0 |
| Pure Water Plus Water Kiosk | Billings | 30 | 0 | 0 |
| Corral Bar Billings | County of Yellowstone | 30 | 0 | 0 |
| Billings Baptist Temple & Scho | County of Yellowstone | 30 | 0 | 0 |
| Lewis And Clark Tavern | Pompeys Pillar | 30 | 0 | 0 |
| YELLOWSTONE CHRISTIAN COLLEGE | Billings | 28 | 0 | 0 |
| Eagle Water Service | Billings | 25 | 0 | 0 |
| Back Roads H2o Service | Laurel | 25 | 0 | 0 |
| Lockwood Iga Blgs Sparkling Pure | Billings | 25 | 0 | 0 |
| Evergreen Iga Sparkling Pure | Billings | 25 | 0 | 0 |
| Rally Point Water | Billings | 25 | 0 | 0 |
| Aqua Man Llc | Billings | 25 | 0 | 0 |
| Primo Refill Wal-mart No 4412 | Laurel | 25 | 0 | 0 |
| County Market Billings No 207 | Billings | 25 | 0 | 0 |
| Smith's Water Hauling Service | County of Yellowstone | 25 | 0 | 0 |
| Graus Trailer Court | County of Yellowstone | 25 | 0 | 0 |
| Mossmain Scale East Bound | County of Yellowstone | 25 | 0 | 0 |
| Mossmain Scale West Bound | County of Yellowstone | 25 | 0 | 0 |
| County Market Billings No 206 | Billings | 25 | 0 | 0 |
| Voss' Trailer Court | County of Yellowstone | 25 | 0 | 0 |
| Restad's Mobile Home Court | County of Yellowstone | 25 | 0 | 0 |
| Cozy Court | County of Yellowstone | 25 | 0 | 0 |
| Kimble Trailer Court | County of Yellowstone | 25 | 0 | 0 |
| Marys Health Food Store Glacier Water | Billings | 25 | 0 | 0 |
| Indian Fort Campground | County of Yellowstone | 25 | 0 | 0 |
| Chancey's Event Center | Huntley | 25 | 0 | 0 |
| Pine Grove Campground | County of Yellowstone | 25 | 0 | 0 |
| Selkirk Fishing Access Site | County of Yellowstone | 25 | 0 | 0 |
| Parkside Cg Well No 2 | County of Yellowstone | 25 | 0 | 0 |
| Sheridan Campground Well #1 | County of Yellowstone | 25 | 0 | 0 |
| Sheridan Cg Well No 2 | County of Yellowstone | 25 | 0 | 0 |
| Pine Grove Well No 4 West | County of Yellowstone | 25 | 0 | 0 |
| Pine Grove Well No 5 East | County of Yellowstone | 25 | 0 | 0 |
| Pine Grove Well No 6 East | County of Yellowstone | 25 | 0 | 0 |
| Parkside Picnic Area | County of Yellowstone | 25 | 0 | 0 |
| Sand Dunes Cg Well No 1 | County of Yellowstone | 25 | 0 | 0 |
| Lantis Spring Campground | County of Yellowstone | 25 | 0 | 0 |
| Wickham Gulch Picnic Area | County of Yellowstone | 25 | 0 | 0 |
| Red Shale Campground | County of Yellowstone | 25 | 0 | 0 |
| Custer National Forest | County of Yellowstone | 25 | 0 | 0 |
| Custer National Forest | County of Yellowstone | 25 | 0 | 0 |
| Custer National Forest | County of Yellowstone | 25 | 0 | 0 |
| Sage Creek Campground & Wc | County of Yellowstone | 25 | 0 | 0 |
| Mcnab Pond Campground | County of Yellowstone | 25 | 0 | 0 |
| Ekalaka Park Campground | County of Yellowstone | 25 | 0 | 0 |
| R&r Trailer Court | County of Yellowstone | 25 | 0 | 0 |
| State Ave Iga - Sparkling Pure | Billings | 25 | 0 | 0 |
| Marys Health Store Blgs Sparkling Pure | Billings | 25 | 0 | 0 |
| Mountain Mudd Water Truck Billings | Billings | 25 | 0 | 0 |
| Main Event | County of Yellowstone | 25 | 0 | 0 |
| Calamity Dinner Theater Inc | County of Yellowstone | 25 | 0 | 0 |
| Hide Out | County of Yellowstone | 25 | 0 | 0 |
| Hayloft | County of Yellowstone | 25 | 0 | 0 |
| Selkirk Campground | County of Yellowstone | 25 | 0 | 0 |
| Corral Bar | County of Yellowstone | 25 | 0 | 0 |
| Sage Creek Campground & Wc | County of Yellowstone | 25 | 0 | 0 |
| Ekalaka Park Campground | County of Yellowstone | 25 | 0 | 0 |
| Iron Side Inn | County of Yellowstone | 25 | 0 | 0 |
| The Blue Cat Huntley | County of Yellowstone | 25 | 0 | 0 |
| Rusty Duck | County of Yellowstone | 25 | 0 | 0 |
| Peek-a-boo Bar | County of Yellowstone | 25 | 0 | 0 |
| Two Acre Trailer Court | County of Yellowstone | 25 | 0 | 0 |
| Son Shine Day Care | County of Yellowstone | 25 | 0 | 0 |
| Waggoners Trucking | County of Yellowstone | 25 | 0 | 0 |
| Water Log | County of Yellowstone | 25 | 0 | 0 |
| Castle Rock Fas | County of Yellowstone | 25 | 0 | 0 |
| Cooney Recreation Area | County of Yellowstone | 25 | 0 | 0 |
| Indian Fort Campground | County of Yellowstone | 25 | 0 | 0 |
| Moraine Fishing Access Site | County of Yellowstone | 25 | 0 | 0 |
| Country Cupboard | County of Yellowstone | 25 | 0 | 0 |
| Cross Home Park | Billings | 24 | 0 | 0 |
| Woodland Court | Shepherd | 23 | 0 | 0 |
| Mountain Bell | County of Yellowstone | 20 | 0 | 0 |
| Country View Mobile Park | Billings | 20 | 0 | 0 |
| Sherrodd's Trailer Court | County of Yellowstone | 15 | 0 | 0 |
| Odonnell Turkey Farm | County of Yellowstone | 10 | 0 | 0 |
| Pops Place | Custer | 0 | 0 | 0 |