What is a No Discharge Zone (NDZ)?

The United States Environmental Protection Agency (EPA) designates areas most likely to be affected by severe contamination, such as sheltered waters with low flushing rates and waters with significant recreational values, as No Discharge Zones.

What does South Carolina law say about boat discharges?

It is illegal to discharge untreated sewage from vessels within all navigable waters.

It is illegal for houseboats to discharge sewage, treated or untreated, into freshwater.

Freshwater NDZs:

  • Lake Hartwell
  • Lake Keowee
  • Lake Murray
  • Lake Thurmond
  • Lake Wylie

Saltwater NDZs:

  • Broad Creek (Hilton Head Island)
Map of South Carolina Lakes