Black Water Tanks are used to collect waste from marine toilets, avoiding direct discharge into the sea and complying with environmental regulations.

Types of waste water tanks for boats

• Fixed Tanks – Permanently installed inside the hull, with exhaust and ventilation systems.
• Portable Tanks – Useful for small boats, easy to empty at collection points.
• Plastic or Stainless Steel Tanks – Plastic is cheaper and lighter, while stainless steel is more durable.

Key Elements of a Reservoir

1. Drain valve : Allows emptying in authorized areas.
2. Vent : Avoids bad odors and internal pressure.
3. Level indicator : Tells you when it's full.
4. Drain pump : Manual or electric to facilitate draining.

Rules and Regulations

In Europe and many other parts of the world, discharging sewage directly into the sea near the coast is prohibited. It is mandatory to use holding tanks and empty them in designated ports.