TMDLs Under Development

Commencement of TMDLs

Development of a total maximum daily load(s) or Alternative Restoration Plan(s) are currently underway for the area(s) listed in the table below. Please send any data or information that supports the development of the TMDL or alternative restoration plan to Wade Cantrell . All data and information submitted, including characterizations of local conditions that affect attainment of water quality standards, shall be considered before completing the TMDL or alternative restoration plan.

Waterbodies Counties Parameters Water Quality Monitoring (WQM) Sites Commencement Date
Lower Catawba Basin Lakes (Cedar Creek, Fishing Creek, Great Falls, Wateree) Chester, Fairfield, Kershaw, Lancaster, York Total Nitrogen, Total Phosphorus, pH, Chlorophyll a, DO Numerous nutrient impaired SCDHEC WQM sites Prior to 2006
Reedy River (5R Project) Greenville, Laurens Total Nitrogen, Total Phosphorus, pH, Chlorophyll a S-022, S-308, S-311 Prior to 2006
Gills Creek Richland Lead C-017, C-078, C-001 January, 2020
Lake Murray Newberry, Saluda Total Nitrogen, Total Phosphorus, pH, Chlorophyll a, DO RL-11033, RL-19154, S-222, S-309, S-324 January, 2021
Shellfish Harvesting Area 16A Beaufort Enterococcus, Fecal Coliform 16A-08, 16A-09, 16A-18, 16A-19, 16A-23, 16A-27, 16A-28, 16A-30, 16A-38, RT-16131 March, 2021
Shellfish Harvesting Area 12B Charleston Enterococcus, Fecal Coliform 12B-02, 12B-43A, 12B-44, 12B-47, 12B-50, 12B-53, 12B-55, 12B-56, RT-18176 December, 2021
Central Midlands / Three Rivers Lexington, Richland E. coli B-080, C-070, CRK06, CRK08, CRK09, CSB-001L, CSB-001R, S-298 January, 2023
Cattail Branch Chesterfield Lead RS-16312 January, 2023
Lake Hartwell 18 Mile Creek Arm Anderson Total Nitrogen, Total Phosphorus SV-268 January, 2023
Cedar Creek and Toms Creek Richland E. coli C-072, C-075, C-076, C-077 September, 2023
Parr and Monticello Reservoirs Newberry, Fairfield Total Phosphorus, pH B-327, B-346, RL-04370, RL-04374, RL-12049, RL-13089, RL-15009, RL-16047, RL-17067, RL-19170, RL-22001 December, 2023


Manager: Wade Cantrell, (803) 898-3548
303(d) List and TMDL Coordinator: Susan Waldner, (803) 898-2460
TMDL Project Manager: Banu Varlik, (803) 898-3701
TMDL/Wasteload Allocation Project Manager: Yoichi Matsuzuru, (803) 898-1545
TMDL/Wasteload Allocation Project Manager: Matt Baumann, (803) 898-4249
Wasteload Allocation Project Manager: Feleke Arega, (803) 898-4451
Wasteload Allocation Project Manager: Erika Balogh, (803) 898-3806
Wasteload Allocation Project Manager: Heather Rizzuti, (803) 898-3903