One of the charter brokers who attended that boat show is Trish Cronan of Ocean Getaways. She’s a member of the Charter Yacht Brokers Association, and she soon became head of CYBA’s first-ever Green Committee. By the time she had organized the presentation where I received my cup of water in late 2011, more charter yachts than ever were offering guests water in reusable or biodegradable cups. Database booking systems were listing environmentally friendly water supplies as charter yacht features, right alongside kayaks and Wi-Fi. Charter brokers were pushing business to yachts that had invested in eco-friendly filtration systems — and it had become easy to get most clients to go along, Cronan says, once they understood the reason those systems are important.