| CUNNINGHAM WATER DISTRICT | | 475 | 0.0285 mg/L |
| GARDEN CITY MOBILE HOME PARK | COLUMBUS | 140 | 0.0185 mg/L |
| MAMMOTH CAVE/CENTRAL SYSTEM | | 5,000 | 0.0174 mg/L |
| LIBERTY WATER WORKS | | 2,302 | 0.0152 mg/L |
| LOCUST VALLEY MOBILE EST | | 94 | 0.0147 mg/L |
| REID VILLAGE WATER DISTRICT | | 2,545 | 0.0137 mg/L |
| CAVELAND ENVIRONMENTAL AUTHORITY, INC. | | 3,264 | 0.0134 mg/L |
| LEWISBURG WATER WORKS | | 3,119 | 0.0132 mg/L |
| BARLOW WATER SYSTEM | | 1,040 | 0.0122 mg/L |
| GRAVES CO WATER DIST - SOUTH GRAVES | | 1,844 | 0.0120 mg/L |
| LACENTER MUNICIPAL WATER CO | | 1,291 | 0.0118 mg/L |
| MILTON WATER & SEWER DEPARTMENT | | 3,861 | 0.0117 mg/L |
| WICKLIFFE MUNICIPAL WATER SYSTEM | | 1,264 | 0.0115 mg/L |
| LOUISVILLE WATER COMPANY | | 806,997 | 0.0113 mg/L |
| STANFORD WATER WORKS | | 9,284 | 0.0110 mg/L |
| SMITHLAND WATER & SEWER | | 989 | 0.0108 mg/L |
| HARDINSBURG RO WTP | | 18,437 | 0.0106 mg/L |
| RIVERSIDE 25 LLC | | 49 | 0.0106 mg/L |
| SALEM MUNICIPAL WATER SYSTEM | | 1,241 | 0.0105 mg/L |
| GRAVES CO WATER DIST - FANCY FARM | | 1,301 | 0.0105 mg/L |
| SHELBYVILLE WATER & SEWER COMMISSION | | 23,760 | 0.0100 mg/L |
| LONDON UTILITY COMMISSION | | 8,855 | 0.0100 mg/L |
| CITY OF SOUTH SHORE WATER WORKS | | 6,798 | 0.0100 mg/L |
| CARROLL CO WATER DISTRICT #1 | | 5,934 | 0.0100 mg/L |
| JUDY WATER ASSOCIATION | | 5,539 | 0.0100 mg/L |
| MT VERNON WATER WORKS | | 4,951 | 0.0100 mg/L |
| BEAVER DAM MUNICIPAL WATER & SEWER | | 3,901 | 0.0100 mg/L |
| KEVIL WATER DEPARTMENT | | 1,782 | 0.0100 mg/L |
| SEBREE WATER DEPARTMENT | | 1,743 | 0.0100 mg/L |
| LYNCH WATER WORKS | | 1,078 | 0.0100 mg/L |
| WINGO WATER & SEWER DEPARTMENT | | 965 | 0.0100 mg/L |
| DRY RIDGE WATER WORKS COMMISSION | | 2,400 | 0.0099 mg/L |
| MARION COUNTY WATER DISTRICT | | 16,311 | 0.0098 mg/L |
| HARDIN COUNTY WATER DISTRICT #2 | | 76,326 | 0.0097 mg/L |
| GRAVES CO WATER DIST - HARDEMAN | | 1,006 | 0.0096 mg/L |
| GRAVES CO WATER DIST - HICKORY | | 4,069 | 0.0096 mg/L |
| KUTTAWA WATER DEPARTMENT | | 1,143 | 0.0096 mg/L |
| WARSAW WATER WORKS | | 1,988 | 0.0096 mg/L |
| ARLINGTON WATER DEPARTMENT | | 301 | 0.0095 mg/L |
| SEYMOUR WATER PLANT, LP | SEYMOUR | 1,560 | 0.0094 mg/L |
| CARROLLTON UTILITIES | | 6,851 | 0.0093 mg/L |
| TRENTON WATER WORKS | | 950 | 0.0093 mg/L |
| MORGAN COUNTY WATER DISTRICT | | 7,502 | 0.0092 mg/L |
| SOUTH LOGAN WATER ASSOCIATION | | 5,198 | 0.0091 mg/L |
| NORTH MERCER WATER DISTRICT | | 9,775 | 0.0090 mg/L |
| WHITESVILLE WATER WORKS | | 3,672 | 0.0090 mg/L |
| TRIMBLE CO WATER DISTRICT #1 | | 4,146 | 0.0089 mg/L |
| ASHLAND WATER WORKS | | 44,402 | 0.0088 mg/L |
| FREDONIA WATER DEPARTMENT | | 1,040 | 0.0087 mg/L |
| BARKLEY LAKE WATER DISTRICT | | 14,284 | 0.0087 mg/L |
| LYON COUNTY WATER DISTRICT | | 6,744 | 0.0086 mg/L |
| FALMOUTH WATER DEPARTMENT | | 3,861 | 0.0086 mg/L |
| OHIO COUNTY WATER DISTRICT | | 16,511 | 0.0085 mg/L |
| SPRINGFIELD WATER WORKS | | 13,205 | 0.0085 mg/L |
| EDMONTON WATER WORKS | | 8,515 | 0.0085 mg/L |
| IRVINGTON WATER SYSTEM | | 1,627 | 0.0083 mg/L |
| KENTUCKY AMERICAN WATER - EASTERN ROCKCA | | 2,165 | 0.0083 mg/L |
| HODGENVILLE WATER WORKS | | 4,629 | 0.0082 mg/L |
| SYMSONIA WATER DISTRICT | | 1,810 | 0.0081 mg/L |
| CADIZ MUNICIPAL WATER CO | | 6,165 | 0.0080 mg/L |
| MUNFORDVILLE WATER DEPT | | 2,109 | 0.0080 mg/L |
| VINE GROVE WATER DEPARTMENT | | 6,703 | 0.0080 mg/L |
| FLEMING-NEON WATER COMPANY | | 3,212 | 0.0078 mg/L |
| LAKE VILLAGE WATER ASSOCIATION | | 6,855 | 0.0077 mg/L |
| BRACKEN COUNTY WATER DISTRICT | | 6,456 | 0.0077 mg/L |
| BURNSIDE WATER COMPANY | | 2,284 | 0.0077 mg/L |
| BROOKSVILLE UTILITY | | 977 | 0.0076 mg/L |
| COLUMBUS WATER WORKS | | 300 | 0.0076 mg/L |
| CAMPBELLSVILLE MUNICIPAL WATER | | 24,874 | 0.0076 mg/L |
| JESSAMINE S ELKHORN WATER DIST | | 8,826 | 0.0075 mg/L |
| LAKE KISSIMMEE MHP | LAKE WALES | 35 | 0.0073 mg/L |
| DRY FORK POINTE MHP | | 230 | 0.0072 mg/L |
| NE WOODFORD CO WATER DISTRICT | | 2,644 | 0.0072 mg/L |
| DOE VALLEY UTILITIES INC | | 2,260 | 0.0072 mg/L |
| GRAVES CO WATER DIST - SEDALIA | | 371 | 0.0072 mg/L |
| MURRAY WATER SYSTEM | | 26,302 | 0.0071 mg/L |
| WEST SHELBY WATER DISTRICT | | 6,994 | 0.0071 mg/L |
| ADAIRVILLE WATER WORKS | | 787 | 0.0071 mg/L |
| CYNTHIANA MUNICIPAL WATER WORKS | | 7,263 | 0.0071 mg/L |
| WATER SERVICE CORP OF KENTUCKY | | 1,633 | 0.0070 mg/L |
| MARTIN CO WATER DISTRICT #1 | | 9,003 | 0.0070 mg/L |
| ISLAND WATER DEPARTMENT | | 1,512 | 0.0070 mg/L |
| MT CARMEL HIGH BOARDING SCHOOL | | 100 | 0.0070 mg/L |
| NORTHERN KENTUCKY WATER DISTRICT | | 259,949 | 0.0070 mg/L |
| LEDBETTER WATER DISTRICT | | 2,729 | 0.0069 mg/L |
| WHEELWRIGHT UTILITY COMMISSION | | 834 | 0.0069 mg/L |
| BARDWELL CITY UTILITIES | | 1,227 | 0.0069 mg/L |
| TAYLORSVILLE WATER WORKS | | 22,286 | 0.0069 mg/L |
| WORTHINGTON MUNICIPAL WATER WORKS | | 1,673 | 0.0068 mg/L |
| JAMESTOWN MUNICIPAL WATER WORKS | | 7,402 | 0.0068 mg/L |
| STELLA TRAILER PARK | | 74 | 0.0067 mg/L |
| RUSSELL SPRINGS WATER & SEWER | | 9,409 | 0.0067 mg/L |
| PROVIDENCE WATER WORKS | | 4,538 | 0.0067 mg/L |
| BRODHEAD WATER WORKS | | 1,613 | 0.0067 mg/L |
| BROWNSVILLE MUNICIPAL WATER SYSTEM | | 1,441 | 0.0067 mg/L |
| BENHAM WATER PLANT | | 855 | 0.0067 mg/L |
| CHRISTIAN CO WATER DISTRICT | | 17,248 | 0.0067 mg/L |
| NORTH SHELBY WATER DISTRICT | | 14,660 | 0.0066 mg/L |
| WILLIAMSTOWN MUNICIPAL WATER DEPT | | 5,495 | 0.0066 mg/L |
| HINDMAN MUN WATER WORKS | | 1,883 | 0.0066 mg/L |