Total Trihalomethanes (TTHMs) in North Carolina Drinking Water
568 public water systems in North Carolina have historical EPA violation records associated with total trihalomethanes (tthms) in the Q2 2026 snapshot.
2,212
Historical Records in North Carolina
568
Systems With Records
About Total Trihalomethanes (TTHMs)
- EPA Limit
- 80 ppb
- Category
- Disinfection Byproducts
- Health Effects
- Liver, kidney, nervous system problems; increased cancer risk
- Common Treatment Approaches
- Activated carbon filters
These counts describe historical compliance records, not present concentrations or household test results. Confirm current conditions with the utility's latest Consumer Confidence Report.