🔍 Key Concepts

• 33 CFR Part 159 – Marine Sanitation Devices (MSDs) and what “approved” means • Difference between treating, holding, and pumping ashore sewage • The idea that regulations focus on preventing pollution in navigable waters

💭 Think About

• For each option, ask: Would this method prevent raw sewage from entering the water in a way that meets federal rules? • Think about where sewage ends up in each choice: is it treated, stored, or sent somewhere designed to handle it? • Consider whether the regulations are written to allow only one method, or recognize several compliant ways to handle sewage.

✅ Before You Answer

• Verify what an approved system is under 33 CFR Part 159 (is it a certified marine sanitation device?). • Check whether holding sewage onboard (without discharge) is considered compliant under federal regulations. • Confirm whether pumping ashore to an approved facility is specifically mentioned or clearly allowed as a compliant method.