Total Trihalomethanes (TTHMs) in Northern Mariana Islands Drinking Water
11 public water systems in Northern Mariana Islands have historical EPA violation records associated with total trihalomethanes (tthms) in the Q2 2026 snapshot.
19
Historical Records in Northern Mariana Islands
11
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.