| IRONDALE WATER SYSTEM | IRONDALE | 10,098 | 0.0594 ug/L |
| COLLINSVILLE WATER WORKS | COLLINSVILLE | 3,945 | 0.0525 ug/L |
| GADSDEN, THE WWSB OF THE CITY OF | GADSDEN | 44,637 | 0.0324 ug/L |
| GRAND BAY WATER WORKS BOARD | GRAND BAY | 11,100 | 0.0314 ug/L |
| STERRETT-VANDIVER WATER SYSTEM, INC. | STERRETT | 3,252 | 0.0310 ug/L |
| COLBERT COUNTY RURAL WATER SYSTEM | TUSCUMBIA | 13,395 | 0.0295 ug/L |
| WETUMPKA, THE WW & SB OF THE CITY OF | WETUMPKA | 10,137 | 0.0290 ug/L |
| CLANTON, THE WW & SB OF THE CITY OF | CLANTON | 13,500 | 0.0280 ug/L |
| HIGHLAND WATER AUTHORITY | GADSDEN | 3,963 | 0.0278 ug/L |
| SHELBY COUNTY COMMISSION-WATER SERVICES | COLUMBIANA | 40,101 | 0.0277 ug/L |
| NORTHEAST ETOWAH COUNTY WATER CO-OP | GADSDEN | 4,275 | 0.0270 ug/L |
| PRATTVILLE, THE WW BOARD OF THE CITY OF | PRATTVILLE | 46,614 | 0.0228 ug/L |
| GREENHILL WATER & FIRE PRO AUTHORITY | FLORENCE | 8,214 | 0.0223 ug/L |
| ALABASTER WATER DEPARTMENT, CITY OF | ALABASTER | 40,986 | 0.0210 ug/L |
| WEST ETOWAH WATER & FIRE PRO AUTHORITY | ATTALLA | 6,900 | 0.0210 ug/L |
| MARBURY WATER SYSTEM, INC. | MARBURY | 8,670 | 0.0202 ug/L |
| SHEFFIELD UTILITIES, CITY OF SHEFFIELD | SHEFFIELD | 13,758 | 0.0200 ug/L |
| TRI COMMUNITY WATER SYSTEM | MILLBROOK | 11,832 | 0.0190 ug/L |
| SPRING VALLEY WATER AUTHORITY | TUSCUMBIA | 5,520 | 0.0190 ug/L |
| GROVE HILL WATER WORKS | GROVE HILL | 5,280 | 0.0190 ug/L |
| MILLBROOK UTILITIES | MILLBROOK | 5,451 | 0.0181 ug/L |
| HOLTVILLE WATER SYSTEM | DEATSVILLE | 12,600 | 0.0180 ug/L |
| FLORENCE WATER DEPARTMENT, CITY OF | FLORENCE | 77,766 | 0.0170 ug/L |
| WEST LAUDERDALE CO, WATER & FPA | FLORENCE | 15,681 | 0.0170 ug/L |
| LITTLEVILLE WATER WORKS | RUSSELLVILLE | 3,576 | 0.0170 ug/L |
| MUSCLE SHOALS UTILITY BOARD | MUSCLE SHOALS | 22,467 | 0.0168 ug/L |
| MONTEVALLO WATER WORKS & SEWER BOARD | MONTEVALLO | 10,746 | 0.0167 ug/L |
| WILCOX COUNTY WATER AND SEWER DISTRICT | CAMDEN | 6,144 | 0.0162 ug/L |
| LOACHAPOKA WATER AUTHORITY | LOACHAPOKA | 14,964 | 0.0160 ug/L |
| WEAVER, CITY OF | WEAVER | 7,050 | 0.0153 ug/L |
| CHILDERSBURG WATER & SEWER BOARD | CHILDERSBURG | 9,777 | 0.0151 ug/L |
| FAIRHOPE, CITY OF | FAIRHOPE | 59,850 | 0.0150 ug/L |
| PELL CITY, CITY OF | PELL CITY | 17,586 | 0.0150 ug/L |
| SOUTH MARENGO CO WATER & FIRE PRO AUTH | LINDEN | 4,416 | 0.0150 ug/L |
| SOUTHSIDE WATER WORKS AND SEWER BOARD | SOUTHSIDE | 12,327 | 0.0140 ug/L |
| THOMASVILLE WATER WORKS & SEWER BOARD | THOMASVILLE | 6,897 | 0.0140 ug/L |
| PINE HILL,TOWN OF | PINE HILL | 2,361 | 0.0137 ug/L |
| ROGERSVILLE WATER WORKS & SEWER BOARD | ROGERSVILLE | 5,271 | 0.0123 ug/L |
| AUBURN, THE WW BOARD OF THE CITY OF | AUBURN | 74,292 | 0.0120 ug/L |
| SARALAND, BD OF W&S COMMISSIONERS | SARALAND | 13,827 | 0.0120 ug/L |
| NORTHEAST ALABAMA WATER SEWER AND FPD | FORT PAYNE | 47,070 | 0.0119 ug/L |
| PELHAM, CITY OF | PELHAM | 38,703 | 0.0116 ug/L |
| LIMESTONE COUNTY WATER & SEWER AUTH. | ATHENS | 90,900 | 0.0111 ug/L |
| OPELIKA, WW BD. OF THE CITY OF | OPELIKA | 56,520 | 0.0110 ug/L |
| ALBERTVILLE, MUNICIPAL UB OF THE CITY OF | ALBERTVILLE | 29,367 | 0.0110 ug/L |
| NORTH BALDWIN UTILITIES | BAY MINETTE | 28,713 | 0.0110 ug/L |
| BOAZ WATER & SEWER BOARD | BOAZ | 15,138 | 0.0100 ug/L |
| CHISHOLM HEIGHTS, WATER & F P AUTHORITY | FLORENCE | 4,881 | 0.0096 ug/L |
| HAWK PRIDE MT WATER SYSTEM | TUSCUMBIA | 4,035 | 0.0092 ug/L |
| ASBURY WATER SYSTEM | ALBERTVILLE | 4,077 | 0.0091 ug/L |
| HUNTSVILLE UTILITIES WATER DEPT. | HUNTSVILLE | 310,107 | 0.0090 ug/L |
| BEULAH UTILITIES DISTRICT | | 10,389 | 0.0088 ug/L |
| PHENIX CITY UTILITIES | PHENIX CITY | 42,267 | 0.0075 ug/L |
| HELENA, THE UB OF THE CITY OF | HELENA | 21,300 | 0.0070 ug/L |
| GUNTERSVILLE WW & SB | GUNTERSVILLE | 13,374 | 0.0068 ug/L |
| SMITHS WATER & SEWER AUTHORITY | SMITHS | 33,555 | 0.0063 ug/L |
| TUSCUMBIA WATER WORKS | TUSCUMBIA | 14,400 | 0.0063 ug/L |
| JACKSON WATER WORKS & SEWER BOARD | JACKSON | 11,715 | 0.0062 ug/L |
| OXFORD WATER WORKS & SEWER BOARD | OXFORD | 31,239 | 0.0061 ug/L |
| BESSEMER WATER SERVICE | BESSEMER | 86,091 | 0.0059 ug/L |
| TALLADEGA WATER & SEWER BOARD, CITY OF | TALLADEGA | 20,250 | 0.0059 ug/L |
| RUSSELL COUNTY WATER AUTHORITY | PHENIX CITY | 16,923 | 0.0058 ug/L |
| UNION SPRINGS (UTLTY BD OF THE CITY OF) | UNION SPRINGS | 3,945 | 0.0058 ug/L |
| WARRIOR RIVER WATER AUTHORITY | BESSEMER | 38,700 | 0.0057 ug/L |
| SARDIS CITY WATER BOARD | BOAZ | 5,328 | 0.0056 ug/L |
| STEVENSON, UTIL. BOARD OF THE TOWN OF | STEVENSON | 4,101 | 0.0056 ug/L |
| TUSKEGEE, UTILITIES BOARD OF THE CITY OF | TUSKEGEE | 12,900 | 0.0055 ug/L |
| CENTRE WATER & SEWER BOARD | CENTRE | 7,050 | 0.0052 ug/L |
| MADISON COUNTY WATER DEPARTMENT | HUNTSVILLE | 119,100 | 0.0050 ug/L |
| ECLECTIC, WATER WORKS & SEWER BOARD | ECLECTIC | 5,094 | 0.0050 ug/L |
| ODENVILLE UTILITIES BOARD | ODENVILLE | 26,022 | 0.0049 ug/L |
| TALLASSEE WATER WORKS | TALLASSEE | 7,512 | 0.0049 ug/L |
| HARVEST-MONROVIA W,S, AND FP, INC. | HARVEST | 51,915 | 0.0048 ug/L |
| MACON COUNTY WATER AUTHORITY | TUSKEGEE | 6,951 | 0.0048 ug/L |
| BELFOREST WATER SYSTEM | DAPHNE | 17,268 | 0.0045 ug/L |
| FRIENDSHIP WATER WORKS | FRIENDSHIP | 4,425 | 0.0045 ug/L |
| HUGULEY WATER AUTHORITY | HUGULEY | 6,795 | 0.0042 ug/L |
| SPRINGVILLE WATER WORKS | SPRINGVILLE | 6,468 | 0.0041 ug/L |
| COOK SPRINGS WATER AUTHORITY | | 4,569 | 0.0040 ug/L |
| CENTRAL ALABAMA WATER SYSTEM | BIRMINGHAM | 585,000 | Not detected |
| MOBILE, BD. OF W&S COMM. OF THE CITY OF | MOBILE | 279,000 | Not detected |
| MONTGOMERY WW&SSB, CITY OF | MONTGOMERY | 276,000 | Not detected |
| TUSCALOOSA WATER & SEWER | TUSCALOOSA | 166,524 | Not detected |
| DOTHAN UTILITIES, CITY OF | DOTHAN | 97,146 | Not detected |
| DECATUR, MUNICIPAL UB OF | DECATUR | 77,103 | Not detected |
| ANNISTON ALABAMA, THE WWSB OF THE CITY O | ANNISTON | 56,646 | Not detected |
| CULLMAN COUNTY WATER DEPARTMENT | | 56,628 | Not detected |
| MADISON, THE W & WW BOARD OF THE CITY OF | MADISON | 54,114 | Not detected |
| FOLEY, UTILITIES BOARD OF THE CITY OF | FOLEY | 50,919 | Not detected |
| ENTERPRISE, THE WWB OF THE CITY OF | ENTERPRISE | 48,000 | Not detected |
| US ARMY GARRISON-REDSTONE ARSENAL | REDSTONE ARSENAL | 44,472 | Not detected |
| ATHENS,THE WATER WORKS BD OF THE CITY OF | ATHENS | 43,431 | Not detected |
| GULF SHORES, THE UB OF THE CITY OF | GULF SHORES | 40,947 | Not detected |
| NORTHPORT WATER WORKS, CITY OF | NORTHPORT | 40,551 | Not detected |
| CENTRAL ELMORE WATER & SEWER AUTHORITY | WETUMPKA | 39,798 | Not detected |
| ARAB, WATER WORKS BOARD OF THE CITY OF | ARAB | 39,795 | Not detected |
| MOBILE COUNTY WATER & FIRE PRO AUTHORITY | THEODORE | 39,573 | Not detected |
| SOUTH ALABAMA UTILITIES WATER SYSTEM | CITRONELLE | 39,249 | Not detected |
| CULLMAN, CITY OF | CULLMAN | 36,312 | Not detected |
| TRUSSVILLE, UB OF THE CITY OF | TRUSSVILLE | 36,300 | Not detected |