Tackling the Superyacht Poo Problem: Evac's Dehydro System Revolutionises Waste Management On-board

Published: 11 Jul 2025
Picture a luxury superyacht populated by numerous guests and crew. Now, consider the amount of human waste generated daily by this regular flush of high-quality food.

Now to some, the mention of human waste might not paint the most glamorous picture of superyacht life. But let’s talk numbers. Imagine 12 guests and 20 crew members, each generating around 200 grams of excreta daily for three months during the summer. The result? A staggering 600-1,000kg of waste, and possibly, more. Maintaining the balance in the tank levels and planning pump-outs ashore is no child’s play. Making final arrangements for offloading the waste certainly doesn’t top any engineer’s checklist!

Thankfully, a proven innovator like Evac Group has stepped in to upend this state of affairs. The company’s newest offering, the ‘Dehydro’ system, harnesses dehydration technology to reduce the wet human waste by approximately 80%. This convertion into a sterile dry powder negates the need for further treatment and abets the offloading process, making waste management notably simpler and more cost-effective.

This new Evac Dehydro system is much more than an ingenious solution, however. It embodies a tangible commitment to the environment, in compliance with stringent MARPOL Annex IV and Annex V regulations regarding sewage and garbage discharge, including food waste. Environmental conservation movements like zero discharge are also receiving a robust boost, as Dehydro can reduce emissions associated with the transportation of offloaded waste by up to an impressive 85%.

In the eyes of Björn Ullbro, CEO of Evac Group, the stakes couldn’t be higher: ‘Direct discharge of untreated waste poses a serious threat to aquatic life by depleting oxygen levels. With increasing regulatory pressures, we’re happy to provide a much-needed alternative to superyachts with our Dehydro system.’ As maritime regulations tighten and the Mediterranean feels the heat, such innovation brings a breath of fresh relief to all.