| Central Alabama Water System | Birmingham | 585,000 | 0.0018 mg/L |
| Huntsville Utilities Water Dept. | Huntsville | 310,107 | 0.0010 mg/L |
| Mobile, Bd. of W&S Comm. of the City of | Mobile | 279,000 | 0.0015 mg/L |
| Montgomery Ww&Ssb, City of | Montgomery | 276,000 | 0.0000 mg/L |
| Tuscaloosa Water & Sewer | Tuscaloosa | 166,524 | 0.0000 mg/L |
| Madison County Water Department | Huntsville | 119,100 | 0.0024 mg/L |
| Dothan Utilities, City of | Dothan | 97,146 | 0.0032 mg/L |
| Limestone County Water & Sewer Auth. | Athens | 90,900 | 0.0019 mg/L |
| Bessemer Water Service | Bessemer | 86,091 | 0.0010 mg/L |
| Florence Water Department, City of | Florence | 77,766 | 0.0034 mg/L |
| Decatur, Municipal Ub of | Decatur | 77,103 | 0.0000 mg/L |
| Auburn, the Ww Board of the City of | Auburn | 74,292 | 0.0005 mg/L |
| Fairhope, City of | Fairhope | 59,850 | 0.0014 mg/L |
| Anniston Alabama, the Wwsb of the City O | Anniston | 56,646 | 0.0000 mg/L |
| Cullman County Water Department | Cullman | 56,628 | 0.0000 mg/L |
| Opelika, Ww Bd. of the City of | Opelika | 56,520 | 0.0005 mg/L |
| Madison, the W & Ww Board of the City of | Madison | 54,114 | 0.0006 mg/L |
| Harvest-Monrovia W,S, and Fp, Inc. | Harvest | 51,915 | 0.0000 mg/L |
| Foley, Utilities Board of the City of | Foley | 50,919 | 0.0000 mg/L |
| Enterprise, the Wwb of the City of | Enterprise | 48,000 | 0.0010 mg/L |
| Northeast Alabama Water Sewer and Fpd | Fort Payne | 47,070 | 0.0013 mg/L |
| Prattville, the Ww Board of the City of | Prattville | 46,614 | 0.0035 mg/L |
| Gadsden, the Wwsb of the City of | Gadsden | 44,637 | 0.0025 mg/L |
| Us Army Garrison-Redstone Arsenal | Redstone Arsenal | 44,472 | 0.0000 mg/L |
| Athens,The Water Works Bd of the City of | Athens | 43,431 | 0.0006 mg/L |
| Phenix City Utilities | Phenix City | 42,267 | 0.0000 mg/L |
| Alabaster Water Department, City of | Alabaster | 40,986 | 0.0011 mg/L |
| Gulf Shores, the Ub of the City of | Gulf Shores | 40,947 | 0.0024 mg/L |
| Northport Water Works, City of | Northport | 40,551 | 0.0000 mg/L |
| Shelby County Commission-Water Services | Columbiana | 40,101 | 0.0020 mg/L |
| Central Elmore Water & Sewer Authority | Wetumpka | 39,798 | 0.0004 mg/L |
| Arab, Water Works Board of the City of | Arab | 39,795 | 0.0000 mg/L |
| Mobile County Water & Fire Pro Authority | Theodore | 39,573 | 0.0016 mg/L |
| South Alabama Utilities Water System | Citronelle | 39,249 | 0.0013 mg/L |
| Pelham, City of | Pelham | 38,703 | 0.0000 mg/L |
| Warrior River Water Authority | Bessemer | 38,700 | 0.0000 mg/L |
| Cullman, City of | Cullman | 36,312 | 0.0000 mg/L |
| Trussville, Ub of the City of | Trussville | 36,300 | 0.0010 mg/L |
| Section & Dutton, Water Works Bd. of | Rainsville | 35,259 | 0.0000 mg/L |
| Smiths Water & Sewer Authority | Smiths | 33,555 | 0.0005 mg/L |
| Daphne, Utilities Board of the City of | Daphne | 33,372 | 0.0060 mg/L |
| Calhoun County Water Authority | Alexandria | 32,796 | 0.0000 mg/L |
| Alexander City, City of | Alexander City | 32,556 | 0.0004 mg/L |
| Dekalb-Jackson Water Supply District | — | 32,421 | 0.0015 mg/L |
| Oxford Water Works & Sewer Board | Oxford | 31,239 | 0.0010 mg/L |
| West Morgan-East Lawrence W&S Authority | Decatur | 30,000 | 0.0028 mg/L |
| Albertville, Municipal Ub of the City of | Albertville | 29,367 | 0.0000 mg/L |
| Prichard Water Works Board | Prichard | 29,190 | 0.0000 mg/L |
| North Baldwin Utilities | Bay Minette | 28,713 | 0.0000 mg/L |
| Jasper Water Works & Sewer Board | Jasper | 28,638 | 0.0004 mg/L |
| Chilton Water Authority | Thorsby | 27,681 | 0.0000 mg/L |
| Calera, the Wwb of Te City of | Calera | 26,982 | 0.0000 mg/L |
| Odenville Utilities Board | Odenville | 26,022 | 0.0020 mg/L |
| Ne Morgan Co., Water & Sewer Authority | Somerville | 25,854 | 0.0010 mg/L |
| Fort Payne, the Ww Bd of the City of | Fort Payne | 25,107 | 0.0000 mg/L |
| Sylacauga Utilities Board | Sylacauga | 24,087 | 0.0006 mg/L |
| Troy Utilities, City of | Troy | 23,523 | 0.0010 mg/L |
| Muscle Shoals Utility Board | Muscle Shoals | 22,467 | 0.0000 mg/L |
| Hartselle Utility Board, City of | Hartselle | 22,233 | 0.0000 mg/L |
| Scottsboro Water Sewer & Gb | Scottsboro | 22,200 | 0.0000 mg/L |
| Selma, the Ww and Sb of the City of | Selma | 21,834 | 0.0017 mg/L |
| Helena, the Ub of the City of | Helena | 21,300 | 0.0011 mg/L |
| Leeds Water Works Board | Leeds | 21,300 | 0.0000 mg/L |
| Talladega Water & Sewer Board, City of | Talladega | 20,250 | 0.0010 mg/L |
| Oneonta, Ub of the City of | Oneonta | 19,971 | 0.0000 mg/L |
| Ozark Utilities Board | Ozark | 19,965 | 0.0000 mg/L |
| Douglas Water Authority | Douglas | 19,179 | 0.0011 mg/L |
| Blount County Water Authority | Cleveland | 19,074 | 0.0000 mg/L |
| Curry Water Authority | Jasper | 18,060 | 0.0000 mg/L |
| Eufaula Water Works | Eufaula | 17,970 | 0.0005 mg/L |
| Orange Beach Water Sewer and F.P.A. | Orange Beach | 17,796 | 0.0000 mg/L |
| Pell City, City of | Pell City | 17,586 | 0.0010 mg/L |
| East Alabama, Water & Fire Pro District | Valley | 17,532 | 0.0022 mg/L |
| V.A.W. Water System, Inc | Vinemont | 17,466 | 0.0000 mg/L |
| Belforest Water System | Daphne | 17,268 | 0.0015 mg/L |
| Russellville Water Works and Sewer Board | Russellville | 17,100 | 0.0010 mg/L |
| Russell County Water Authority | Phenix City | 16,923 | 0.0013 mg/L |
| Fort Rucker -American Water Enterprises | Ft. Rucker | 16,774 | 0.0011 mg/L |
| Carrolls Creek, Water Authority | Northport | 16,248 | 0.0000 mg/L |
| West Lauderdale Co, Water & Fpa | Florence | 15,681 | 0.0000 mg/L |
| West Lawrence Water Coop | Mt. Hope | 15,669 | 0.0000 mg/L |
| North Marshall Utilities | Grant | 15,300 | 0.0000 mg/L |
| Andalusia, Utilities Board of | Andalusia | 15,251 | 0.0029 mg/L |
| Boaz Water & Sewer Board | Boaz | 15,138 | 0.0010 mg/L |
| Citizens Water Service, Inc. | Brookwood | 15,096 | 0.0000 mg/L |
| Loachapoka Water Authority | Loachapoka | 14,964 | 0.0009 mg/L |
| Tuscumbia Water Works | Tuscumbia | 14,400 | 0.0019 mg/L |
| Pickens County Water Authority | Carrollton | 14,364 | 0.0000 mg/L |
| Jacksonville Water Works Gas and Sewer | Jacksonville | 14,217 | 0.0000 mg/L |
| Walnut Hill Water Authority | Dadeville | 14,127 | 0.0000 mg/L |
| Butler County Water Authority | Greenville | 14,052 | 0.0000 mg/L |
| Lincoln, City of | Lincoln | 13,923 | 0.0000 mg/L |
| Saraland, Bd of W&S Commissioners | Saraland | 13,827 | 0.0084 mg/L |
| Sheffield Utilities, City of Sheffield | Sheffield | 13,758 | 0.0018 mg/L |
| Elmore Water & Sewer Authority | Elmore | 13,680 | 0.0000 mg/L |
| Owens Crossroads Water Authority | Owens Cross Roads | 13,569 | 0.0014 mg/L |
| Ft Mitchell Water System, Inc. | Ft Mitchell | 13,509 | 0.0000 mg/L |
| Clanton, the Ww & Sb of the City of | Clanton | 13,500 | 0.0000 mg/L |
| Colbert County Rural Water System | Tuscumbia | 13,395 | 0.0005 mg/L |
| Guntersville Ww & Sb | Guntersville | 13,374 | 0.0000 mg/L |