| FORT CAMPBELL WATER SYSTEM GU | TN0000820 | 7 | 3 | |
| MANCHESTER WATER DEPARTMENT, TN Surface Water | TN0000429 | 8 | 2 | |
| FIRST U.D. OF HARDIN COUNTY Surface Water | TN0000546 | 8 | 2 | |
| SAVANNAH VALLEY U. D. Surface Water | TN0000613 | 8 | 2 | |
| CAMDEN WATER DEPT Surface Water | TN0000090 | 7 | 2 | |
| MARSHALL CO BD P.U. #1 Surface Water | TN0000105 | 7 | 2 | |
| HILLSVILLE UTILITY DISTRICT Surface Water | TN0000430 | 7 | 2 | |
| TULLAHOMA UTILITIES AUTHORITY Surface Water | TN0000715 | 7 | 2 | |
| LEWISBURG WATER SYSTEM Surface Water | TN0000400 | 6 | 2 | |
| OCOEE UTILITY DISTRICT GU | TN0000525 | 6 | 2 | |
| SHELBYVILLE WATER SYSTEM Surface Water | TN0000628 | 6 | 2 | |
| WARTRACE WATER SYSTEM Surface Water | TN0000730 | 6 | 2 | |
| MAURY CO WATER SYSTEM Surface Water | TN0000770 | 6 | 2 | |
| NORTH U.D. OF DECATUR/BENTON CO. Surface Water | TN0000883 | 6 | 2 | |
| CLIFTON WATER DEPT Surface Water | TN0000119 | 5 | 2 | |
| ERWIN UTILITIES AUTHORITY Groundwater | TN0000231 | 5 | 2 | |
| BEDFORD COUNTY UTILITY DISTRICT Surface Water | TN0000517 | 5 | 2 | |
| PARSONS WATER DEPARTMENT Surface Water | TN0000541 | 5 | 2 | |
| JACKSON WATER SYSTEM Groundwater | TN0000299 | 3 | 2 | |
| DANDRIDGE WATER MANAGEMENT FACILITY Surface Water | TN0000170 | 6 | 1 | |
| NOLENSVILLE-COLLEGE GROVE UD Surface Water | TN0000511 | 6 | 1 | |
| LA VERGNE WATER SYSTEM Surface Water | TN0000386 | 5 | 1 | |
| MURFREESBORO WATER DEPARTMENT Surface Water | TN0000491 | 5 | 1 | |
| SMYRNA WATER SYSTEM Surface Water | TN0000639 | 5 | 1 | |
| SPRING HILL WATER DEPT Surface Water | TN0000667 | 5 | 1 | |
| WILSON CO WATER & WASTEWATER Surface Water | TN0000790 | 5 | 1 | |
| LENOIR CITY UTILITY BOARD Surface Water | TN0000396 | 4 | 1 | |
| SCOTTS HILL WATER SYSTEM Groundwater | TN0000614 | 4 | 1 | |
| SAVANNAH UTILITY DEPT Groundwater | TN0000611 | 3 | 1 | |
| WHITE PINE WATER SYSTEM GU | TN0000746 | 3 | 1 | |
| KINGSPORT WATER DEPT Surface Water | TN0000349 | 2 | 1 | |
| FAIRVIEW UTILITY DISTRICT Surface Water | TN0000563 | 2 | 1 | |
| SHADY GROVE UTILITY DISTRICT Surface Water | TN0000626 | 2 | 1 | |
| TRENTON WATER SYSTEM Groundwater | TN0000707 | 2 | 1 | |
| BLOOMINGDALE UTILITY DISTRICT Surface Water | TN0000056 | 1 | 1 | |
| DEWHITE UTILITY DISTRICT Surface Water | TN0000190 | 1 | 1 | |
| MINOR HILL WATER UTIL DIST Surface Water | TN0000469 | 1 | 1 | |
| CONSOLIDATED U D OF RUTHERFORD Surface Water | TN0000791 | 4 | 0 | |
| ALPHA-TALBOTT UTILITY DISTRICT Surface Water | TN0000014 | 3 | 0 | |
| BEAN STATION UTILITY DISTRICT Surface Water | TN0000041 | 3 | 0 | |
| CLEVELAND UTILITIES Surface Water | TN0000117 | 3 | 0 | |
| MAYNARDVILLE WATER DEPT GU | TN0000442 | 3 | 0 | |
| COUNTY WIDE UTILITY DISTRICT Groundwater | TN0000006 | 2 | 0 | |
| TENNESSEE AMERICAN WATER Surface Water | TN0000107 | 2 | 0 | |
| HIXSON UTILITY DISTRICT Groundwater | TN0000303 | 2 | 0 | |
| JEFFERSON CITY WATER & SEWER C MX | TN0000328 | 2 | 0 | |
| FIRST UTIL DIST OF KNOX COUNTY Surface Water | TN0000369 | 2 | 0 | |
| NEW MARKET UTILITY DISTRICT Surface Water | TN0000499 | 2 | 0 | |
| PERSIA UTILITY DISTRICT Surface Water | TN0000594 | 2 | 0 | |
| SIGNAL MOUNTAIN WATER SYSTEM Surface Water | TN0000634 | 2 | 0 | |
| SOUTH PITTSBURG WATER SYSTEM Surface Water | TN0000651 | 2 | 0 | |
| WATTS BAR EAST U.D. MX | TN0000969 | 2 | 0 | |
| ADAMSVILLE WATER SYSTEM Groundwater | TN0000002 | 1 | 0 | |
| NORTH OVERTON UTILITY DISTRICT Surface Water | TN0000013 | 1 | 0 | |
| ATHENS UTILITIES BOARD Surface Water | TN0000024 | 1 | 0 | |
| BOLIVAR WATER SYSTEM Groundwater | TN0000063 | 1 | 0 | |
| BROWNSVILLE WATER DEPT Groundwater | TN0000080 | 1 | 0 | |
| BYRDSTOWN WATER DEPT Surface Water | TN0000088 | 1 | 0 | |
| CHUCKEY UTILITY DISTRICT Surface Water | TN0000108 | 1 | 0 | |
| FIRST UTILITY DISTRICT OF HAWKINS COUNTY Surface Water | TN0000109 | 1 | 0 | |
| COLUMBIA POWER AND WATER SYSTEMS Surface Water | TN0000128 | 1 | 0 | |
| NORTH STEWART UTILITY DISTRICT Surface Water | TN0000195 | 1 | 0 | |
| EASTSIDE UTILITY DISTRICT Surface Water | TN0000219 | 1 | 0 | |
| ERIN WATER DEPARTMENT Surface Water | TN0000230 | 1 | 0 | |
| FRANKLIN WATER DEPT Surface Water | TN0000246 | 1 | 0 | |
| CARYVILLE-JACKSBORO UTILITIES COMMISSION Surface Water | TN0000322 | 1 | 0 | |
| KINGSTON WATER SYSTEM Surface Water | TN0000360 | 1 | 0 | |
| KNOXVILLE UTILITIES BOARD-KUB Surface Water | TN0000366 | 1 | 0 | |
| LUTTRELL-BLAINE-CORRYTON U.D. Surface Water | TN0000415 | 1 | 0 | |
| MCMINNVILLE WATER DEPT Surface Water | TN0000423 | 1 | 0 | |
| ROANE CENTRAL UTILITY DISTRICT Surface Water | TN0000457 | 1 | 0 | |
| MILLINGTON WATER DEPT Groundwater | TN0000463 | 1 | 0 | |
| MORRISTOWN WATER SYSTEM Surface Water | TN0000474 | 1 | 0 | |
| MOUNTAIN CITY WATER DEPT. Surface Water | TN0000479 | 1 | 0 | |
| ANDERSON COUNTY WATER AUTHORITY Surface Water | TN0000514 | 1 | 0 | |
| OLD KNOXVILLE HWY U D Surface Water | TN0000530 | 1 | 0 | |
| CUMBERLAND UTILITY DISTRICT Surface Water | TN0000531 | 1 | 0 | |
| QUEBECK WALLING UTILITY DIST Surface Water | TN0000569 | 1 | 0 | |
| NORTHWEST CLAY COUNTY UTILITY Surface Water | TN0000573 | 1 | 0 | |
| RICEVILLE UTILITY DISTRICT Surface Water | TN0000576 | 1 | 0 | |
| RIDGELY WATER SYSTEM Groundwater | TN0000579 | 1 | 0 | |
| RIVER ROAD UTILITY DISTRICT Surface Water | TN0000582 | 1 | 0 | |
| ROCKWOOD WATER SYSTEM Surface Water | TN0000590 | 1 | 0 | |
| LAKEVIEW UD WEST GU | TN0000596 | 1 | 0 | |
| SELMER WATER SYSTEM Groundwater | TN0000615 | 1 | 0 | |
| WALDEN'S RIDGE UTILITY DISTRICT Groundwater | TN0000635 | 1 | 0 | |
| SMITH UTILITY DISTRICT Surface Water | TN0000636 | 1 | 0 | |
| SPRINGFIELD WATER SYSTEM Surface Water | TN0000666 | 1 | 0 | |
| PLATEAU UTILITY DISTRICT Surface Water | TN0000729 | 1 | 0 | |
| WARREN COUNTY UTILITY DISTRICT Surface Water | TN0000818 | 1 | 0 | |
| WATTS BAR UTILITY DISTRICT GU | TN0000872 | 1 | 0 | |
| Y-12 NNSA PRODUCTION OFFICE Surface Water | TN0001068 | 1 | 0 | ◐ Low Level |
| SEVIER COUNTY WATER DEPARTMENT Surface Water | TN0008279 | 1 | 0 | |