| Hineston Water System, Inc | Hineston, LA | 1,089 | 151 | - |
| Highway 1148 Water System | Plaquemine, LA | 1,086 | 0 | - |
| Simsboro Water System | Simsboro, LA | 1,083 | 49 | - |
| East Carroll WS South | Transylvania, LA | 1,071 | 123 | Clean |
| Southwest Avoyelles Water District | Bunkie, LA | 1,053 | 103 | - |
| Poland Water Association | Echo, LA | 1,044 | 45 | - |
| Bayou Macon Water System | Delhi, LA | 1,041 | 171 | - |
| Bellwood Water System | Provencal, LA | 1,032 | 535 | - |
| Jenkins Community Water System | Doyline, LA | 1,026 | 179 | - |
| Hagewood Water System | Provencal, LA | 1,017 | 234 | - |
| Morganza Water System | Morganza, LA | 1,005 | 11 | - |
| Wards 4 & 5 Water System | Grayson, LA | 1,002 | 87 | - |
| State of la Military Dept - Camp Minden | Minden, LA | 1,001 | 16 | - |
| Toomey Rest Area Water System | Lake Charles, LA | 1,001 | 1 | - |
| Butte la Rose Rest Area Water System | Lafayette, LA | 1,001 | 28 | - |
| St Tam Parish - Medcath (la Heart) | Covington, LA | 1,001 | 6 | - |
| Fontainebleau State Park | Springfield, LA | 1,000 | 65 | - |
| Knights of Columbus Bingo | Covington, LA | 1,000 | 4 | - |
| Winn Dixie #1500 | Hammond, LA | 1,000 | 11 | - |
| Mooringsport Water System | Mooringsport, LA | 999 | 724 | - |
| Killian Water System | Bossier City, LA | 999 | 40 | - |
| Relay Station | Shreveport, LA | 999 | 14 | - |
| Crawdaddys Truck Stop Water System | Keithville, LA | 999 | 38 | - |
| Camp Bethany Water System | Bethany, LA | 999 | 0 | - |
| Lacombe Stores | Lacombe, LA | 999 | 3 | - |
| Beauregard Waterworks District No. 6 | Merryville, LA | 993 | 6 | - |
| East Jena Water System Inc. | Jena, LA | 990 | 9 | - |
| Pleasant Hill Water System | Pleasant Hill, LA | 990 | 104 | - |
| Gibsland Water System | Gibsland, LA | 979 | 122 | - |
| Diversion Water - Terry Harbor Campsites | Prairieville, LA | 969 | 33 | - |
| Doyline Waterworks District 1 | Doyline, LA | 969 | 71 | Clean |
| Town of Elizabeth Water System | Elizabeth, LA | 966 | 10 | - |
| South Desoto Water System | Mansfield, LA | 963 | 691 | - |
| Village of Grosse Tete Water System | Grosse Tete, LA | 954 | 24 | - |
| Vegas Style South | Broussard, LA | 950 | 21 | - |
| Alabama Water System | Arcadia, LA | 948 | 57 | - |
| Columbia Water System | Columbia, LA | 945 | 24 | - |
| Waterworks Dist. No. 10 of Ward 7 | Vinton, LA | 942 | 9 | - |
| Country Pines North Subdivision WS | Mandeville, LA | 936 | 100 | - |
| South Mansfield Water System | Mansfield, LA | 933 | 195 | - |
| Village of Sicily Island | Sicily Island, LA | 930 | 66 | - |
| St Tam Parish - River Oaks | Covington, LA | 930 | 1 | - |
| Mangham Water System | Mangham, LA | 927 | 30 | - |
| Cameron Parish Ww District 2 | Hackberry, LA | 926 | 84 | - |
| Gilbert Water System | Gilbert, LA | 915 | 53 | - |
| Lincoln Parish Waterworks District #2 | Ruston, LA | 915 | 9 | - |
| International Paper (Mansfield) | Mansfield, LA | 908 | 0 | - |
| Clarks Water System | Clarks, LA | 906 | 43 | - |
| Maitland Water Works District | Clayton, LA | 900 | 36 | - |
| Pine Prairie Correctional Facility | Pine Prairie, LA | 900 | 72 | - |