We found 83 public water systems in Guernsey county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Cambridge, City Of | Cambridge | 10,635 | 25 | 119 |
| Guernsey Co. Water Dept. | County of Guernsey | 9,981 | 0 | 4 |
| Guernsey Co.san.district No.6 | County of Guernsey | 4,640 | 0 | 0 |
| Byesville | County of Guernsey | 4,615 | 0 | 77 |
| Western Guernsey Regional Water District | County of Guernsey | 3,225 | 0 | 6 |
| Salt Fork Utility Co. | County of Guernsey | 2,021 | 0 | 50 |
| Byesville, Vlg. Of-plt 2 | County of Guernsey | 2,000 | 0 | 0 |
| Byesville, Vlg. Of-plt 1 | County of Guernsey | 2,000 | 0 | 0 |
| Salt Fork Resorts | County of Guernsey | 1,700 | 0 | 0 |
| Salt Fork Resorts | County of Guernsey | 1,700 | 0 | 0 |
| Quaker City | County of Guernsey | 875 | 0 | 15 |
| Oper.engr,odot-rest Area 5-30 | County of Guernsey | 500 | 0 | 0 |
| Supt,cumberland Water Dept. | Cumberland | 500 | 0 | 0 |
| Oper.engr,odot-rest Area 5-29 | County of Guernsey | 500 | 0 | 0 |
| Oper.engr,odot-rest Area 5-26 | County of Guernsey | 500 | 0 | 0 |
| Cumberland | County of Guernsey | 485 | 0 | 0 |
| Pleasant City, Village Of | County of Guernsey | 447 | 0 | 13 |
| Mgr,lk Restaurant | County of Guernsey | 300 | 0 | 0 |
| Kimbolton Water Department | Kimbolton | 240 | 0 | 0 |
| I70 Fuel Mart 727 | County of Guernsey | 240 | 0 | 2 |
| Mwcd Piedmont Camp P2 Pws | County of Guernsey | 240 | 0 | 8 |
| Pres,salt Fork Campgrounds | County of Guernsey | 235 | 0 | 0 |
| Odnr-salt Fork St Park | County of Guernsey | 205 | 0 | 0 |
| Genie Management, Llc Pws | County of Guernsey | 200 | 0 | 6 |
| Winterset Campground | County of Guernsey | 200 | 0 | 0 |
| Liberty Elementary School | County of Guernsey | 200 | 0 | 0 |
| Spring Valley Outdoors, Inc | County of Guernsey | 200 | 0 | 11 |
| Kimbolton Village Pws | Kimbolton | 190 | 0 | 0 |
| Madison Elementary School | Lore City | 189 | 0 | 0 |
| Mgr,camp Robynhaven | County of Guernsey | 160 | 0 | 0 |
| Big Sky Campground | County of Guernsey | 154 | 0 | 1 |
| Jackies Family Restaurant | County of Guernsey | 150 | 0 | 6 |
| Mgr,rolling Hills Sale Center | County of Guernsey | 125 | 0 | 0 |
| Principal,londonderry School | County of Guernsey | 110 | 0 | 0 |
| Robins Ridge Golf Course | County of Guernsey | 100 | 0 | 0 |
| Londonderry School | County of Guernsey | 100 | 0 | 0 |
| Mgr,bell's Daritwist | County of Guernsey | 100 | 0 | 0 |
| Principal,old Washington Elem. | Old Washington | 100 | 0 | 0 |
| Dogwood Acres Camp | County of Guernsey | 100 | 0 | 0 |
| Robynhaven Mid-e. Voc. S. Camp | County of Guernsey | 100 | 0 | 0 |
| Mgr,bailey's Cafe | County of Guernsey | 100 | 0 | 0 |
| Oak Hill Mobile Home Park | County of Guernsey | 97 | 0 | 0 |
| Camp Wingfoot | County of Guernsey | 95 | 0 | 0 |
| Oak Hill Mobile Home Pk. | Cambridge | 92 | 0 | 0 |
| North Salem Community Church | County of Guernsey | 90 | 0 | 0 |
| Ladd Lands Mobile Home P | Cambridge | 85 | 0 | 0 |
| Midwest Pride Retail Sto | Westerville | 75 | 0 | 0 |
| Country Sunset Restaurant | County of Guernsey | 70 | 0 | 0 |
| Lighthouse Of Faith Pws | County of Guernsey | 65 | 0 | 0 |
| Garys Bp Pws | County of Guernsey | 60 | 0 | 0 |
| Banana Peel Ice Cream Pws | County of Guernsey | 60 | 0 | 0 |
| Rocky Pines Campground | County of Guernsey | 50 | 0 | 0 |
| Crazy 8 Camp | New Philadelphia | 50 | 0 | 0 |
| Heritage Christian School | County of Guernsey | 50 | 0 | 0 |
| Walnut Valley Campground | County of Guernsey | 50 | 0 | 0 |
| Odot-rest Area 5-27 | County of Guernsey | 50 | 0 | 0 |
| Mgr,bird's Run Campground | County of Guernsey | 50 | 0 | 0 |
| Linns Food Palace Pws | Kimbolton | 50 | 0 | 0 |
| The Shack | County of Guernsey | 50 | 0 | 0 |
| Senecaville Fish Hatchery | County of Guernsey | 50 | 0 | 0 |
| Mgr,ralph And Ethel's | County of Guernsey | 50 | 0 | 0 |
| Mgr,pine Knob Mobile Home Park | County of Guernsey | 48 | 0 | 0 |
| Winterset U.m. Church | Lore City | 45 | 0 | 0 |
| Guernsey County Home | Lore City | 35 | 0 | 0 |
| Mgr,gray's Riding Stable | County of Guernsey | 30 | 0 | 0 |
| Mgr,winterset Campgrounds | County of Guernsey | 30 | 0 | 0 |
| Mgr,smittys Sandwich Shop | County of Guernsey | 30 | 0 | 0 |
| Cambridge Skyline Drive Pws | County of Guernsey | 26 | 0 | 0 |
| R Place | County of Guernsey | 25 | 0 | 0 |
| Quaker City Shell Pws | County of Guernsey | 25 | 0 | 0 |
| Usce/senecaville Lake | County of Guernsey | 25 | 0 | 0 |
| Country Sunset Restaurant | County of Guernsey | 25 | 0 | 0 |
| Piedmont Marina Camp P-3 | County of Guernsey | 25 | 0 | 0 |
| Odnr-salt Fork Grp Campg | Lore City | 25 | 0 | 0 |
| Mgr,hickory Hollow Camp | County of Guernsey | 25 | 0 | 0 |
| Park Market | County of Guernsey | 25 | 0 | 0 |
| Mgr,fran's Bar | County of Guernsey | 25 | 0 | 0 |
| Mgr,eagle Fireworks | County of Guernsey | 25 | 0 | 0 |
| Club 21 | County of Guernsey | 25 | 0 | 0 |
| Manager, C And B Rental | County of Guernsey | 25 | 0 | 0 |
| Antrim Presbyterian Church | Freeport | 25 | 0 | 0 |
| Barnyard Camp | County of Guernsey | 25 | 0 | 0 |
| Georgetown Winery Pws | County of Guernsey | 25 | 0 | 0 |