NC County Hub

Water treatment in Durham County, NC

Durham County water is very soft by national standards, typically 1 to 4 grains per gallon, because the City of Durham Water Management treats two of the cleanest reservoirs in the Piedmont (Lake Michie and Little River). The 2024 CCR for the county's Rougemont sub-system reports TTHM at 21 ppb and HAA5 at 11 ppb (both well below the 80 and 60 ppb MCLs), Fluoride at 0.11 ppm, and Chlorine at 1.2 ppm running annual average. The flip side of that softness is that disinfection by-products and chloramine residuals are the recurring concerns on the Durham CCR, not hardness. A softener is rarely the right first call for a Durham address. Whole-house catalytic carbon for chloramine reduction and a 5-stage RO for drinking water are the standard recommendations.