| OAKHILLS SURB IMPROVMENT DIST | | 133 | 0.2778 mg/L |
| TRI COUNTY RWDD -MOORES CHAPEL | | 3,112 | 0.2000 mg/L |
| DIERKS WATER WORKS | | 1,317 | 0.1064 mg/L |
| PLEASANT VIEW WATER FAC BOARD | | 1,708 | 0.0836 mg/L |
| COTTONWOOD WATER ASSOCIATION | | 820 | 0.0670 mg/L |
| CENTRAL ARKANSAS WATER PARON | | 2,025 | 0.0632 mg/L |
| NEW LONDON WATER ASSOCIATION | | 850 | 0.0630 mg/L |
| WYE MOUNTAIN WATER ASSOCIATION | | 1,963 | 0.0509 mg/L |
| NORTH HOWARD RURAL WATER ASSOCIATION | | 710 | 0.0470 mg/L |
| SOUTHERN HILLS WATER SYSTEM | | 25 | 0.0470 mg/L |
| HARRISON WATERWORKS | | 17,455 | 0.0442 mg/L |
| HOUSTON WATERWORKS | | 650 | 0.0430 mg/L |
| RUSSELL WATERWORKS | | 461 | 0.0385 mg/L |
| HAVANA WATERWORKS | | 1,411 | 0.0342 mg/L |
| SOUTH PIKE CO WATER | | 755 | 0.0340 mg/L |
| COMMUNITY WATER SYSTEM | | 18,628 | 0.0329 mg/L |
| DELIGHT WATERWORKS | | 1,577 | 0.0312 mg/L |
| FCMTC WATERWORKS | | 500 | 0.0309 mg/L |
| OLA WATERWORKS | | 1,204 | 0.0302 mg/L |
| LOCKESBURG WATERWORKS | | 739 | 0.0300 mg/L |
| LEOLA WATERWORKS | | 564 | 0.0272 mg/L |
| CENTRAL LOGAN COUNTY PWFB | | 1,268 | 0.0264 mg/L |
| VILONIA WATERWORKS | | 24,690 | 0.0240 mg/L |
| TILLAR WATERWORKS | | 225 | 0.0240 mg/L |
| GUY WATERWORKS | | 2,438 | 0.0236 mg/L |
| KEISER WATERWORKS | | 810 | 0.0235 mg/L |
| OZARK WATERWORKS | | 4,368 | 0.0233 mg/L |
| SOUTHWEST ARKANSAS WATER SYSTEM | | 2,335 | 0.0230 mg/L |
| LAKE FOREST SUBORDINATE DIST | | 125 | 0.0230 mg/L |
| EAST MONROE COUNTY WATER USERS | | 730 | 0.0228 mg/L |
| LITTLE RIVER COUNTRY CLUB | | 120 | 0.0228 mg/L |
| GUION WATER DEPARTMENT | | 249 | 0.0219 mg/L |
| ALTUS WATERWORKS | | 1,820 | 0.0214 mg/L |
| CASH WATERWORKS | | 342 | 0.0208 mg/L |
| NAIL-SWAIN WATER ASSOCIATION | | 970 | 0.0208 mg/L |
| MURFREESBORO WATERWORKS | | 1,645 | 0.0197 mg/L |
| TOAD SUCK PUBLIC FACILITY BD | | 1,340 | 0.0191 mg/L |
| WALDO WATERWORKS | | 1,630 | 0.0180 mg/L |
| SEVIER CO WATER ASSOCIATION | | 5,365 | 0.0180 mg/L |
| PRATTSVILLE WATERWORKS | | 1,341 | 0.0178 mg/L |
| GARLAND WATERWORKS | | 342 | 0.0173 mg/L |
| ALTHEIMER WATERWORKS | | 765 | 0.0168 mg/L |
| GRADY WATERWORKS | | 313 | 0.0165 mg/L |
| MARIANNA WATERWORKS | | 3,238 | 0.0156 mg/L |
| LEE COUNTY WATER ASSOCIATION | | 3,770 | 0.0155 mg/L |
| ADC EAST ARKANSAS REGIONAL | | 1,650 | 0.0152 mg/L |
| DEQUEEN WATER WORK | | 6,105 | 0.0150 mg/L |
| KROOKED KREEK WATER ASSN | | 2,250 | 0.0150 mg/L |
| WEST HELENA WATER WORKS | | 5,693 | 0.0148 mg/L |
| CASA WATER DEPT | | 1,500 | 0.0145 mg/L |
| DEVALLS BLUFF WATERWORKS | | 600 | 0.0144 mg/L |
| GREASY VALLEY WPFB LOGAN CO. | | 700 | 0.0143 mg/L |
| MT SHERMAN WATER ASSOCIATION | | 903 | 0.0142 mg/L |
| JONESBORO WATER SYSTEM | | 81,888 | 0.0141 mg/L |
| MARION WATERWORKS | | 13,032 | 0.0141 mg/L |
| EUREKA SPRINGS WATERWORKS | | 4,053 | 0.0138 mg/L |
| PORTLAND WATERWORKS | | 625 | 0.0136 mg/L |
| WASHINGTON WATER SYSTEM | | 142 | 0.0134 mg/L |
| ODEN-PENCIL BLUFF WATER ASSN | | 393 | 0.0134 mg/L |
| NORTH EAST PUBLIC WATER AUTH | | 4,690 | 0.0133 mg/L |
| BIGELOW WATERWORKS | | 605 | 0.0133 mg/L |
| WEST WOODRUFF WATER DISTRICT | | 398 | 0.0132 mg/L |
| FULTON WATERWORKS | | 379 | 0.0132 mg/L |
| ALICIA WATER SYSTEM | | 146 | 0.0128 mg/L |
| CRESTWOOD MOBILE HOME PARK | | 48 | 0.0128 mg/L |
| TRI-COUNTY WATER DISTBR DIST | | 20,394 | 0.0124 mg/L |
| HORATIO WATERWORKS | | 1,278 | 0.0124 mg/L |
| BRADLEY CO RURAL WATER ASSOCIATION | | 1,163 | 0.0124 mg/L |
| LAWSON-URBANA WATER ASSOC | | 1,108 | 0.0123 mg/L |
| PICKENS WATERWORKS | | 49 | 0.0123 mg/L |
| S P G WATER ASSOCIATION | | 1,730 | 0.0122 mg/L |
| GRAND PRAIRIE BAYOU 2 PWA | | 13,519 | 0.0120 mg/L |
| WILMOT WATERWORKS | | 416 | 0.0120 mg/L |
| HARMONY GROVE WATER ASSOC | | 2,192 | 0.0118 mg/L |
| BEARDEN WATERWORKS | | 2,511 | 0.0117 mg/L |
| CLARK COUNTY COUNTRY WATER FACILITIES | | 2,403 | 0.0117 mg/L |
| SUNSET WATER ASSOCIATION | | 710 | 0.0116 mg/L |
| FOUNTAIN HILL WATERWORKS | | 1,028 | 0.0115 mg/L |
| VALLEY SPRINGS WATERWORKS | | 3,400 | 0.0114 mg/L |
| BEAVERFORK PWA | | 4,220 | 0.0113 mg/L |
| KIBLER WATER SYSTEM | | 1,815 | 0.0113 mg/L |
| CAMP ROBINSON | | 1,500 | 0.0112 mg/L |
| BROOKLAND WATERWORKS | | 4,283 | 0.0110 mg/L |
| BRUNNER HILL WATER ASSOC | | 1,265 | 0.0110 mg/L |
| BUENA VISTA-OGEMAW WATER ASSOCIATION | | 384 | 0.0108 mg/L |
| MOUNTAINBURG WATER AND SEWER | | 1,052 | 0.0108 mg/L |
| FURLOW PUBLIC WATER AUTHORITY | | 3,073 | 0.0108 mg/L |
| DENNING WATERWORKS | | 712 | 0.0108 mg/L |
| WABBASEKA WATERWORKS | | 286 | 0.0108 mg/L |
| MARVELL WATERWORKS | | 1,035 | 0.0108 mg/L |
| GRUBBS WATERWORKS | | 823 | 0.0108 mg/L |
| MARKED TREE WATERWORKS | | 2,610 | 0.0106 mg/L |
| MC CRORY WATERWORKS | | 1,736 | 0.0106 mg/L |
| PEACH ORCHARD WATERWORKS | | 168 | 0.0106 mg/L |
| MOUNTAIN TOP WATER ASSOCIATION | | 9,253 | 0.0105 mg/L |
| MC GEHEE WATERWORKS | | 3,849 | 0.0105 mg/L |
| MOUNT IDA WATERWORKS | | 3,218 | 0.0105 mg/L |
| HOLLY GROVE WATERWORKS | | 1,557 | 0.0105 mg/L |
| SALINE CO WW SS PFB | | 2,538 | 0.0104 mg/L |
| OZARK ACRES WATER ASSOCIATION | | 830 | 0.0104 mg/L |