Winston Ibrahim, cofounder and CEO of startup Hydros, is aiming to disrupt the water filtration business dominated by Brita. Hydros sells water bottles, pitchers and carafes with a self-contained water filtration system. The founders got their business idea by looking at the wastefulness of tossing a water bottle after drinking — and developed a reusable bottle with its own filtration system. Ibrahim recently spoke to Knowledge at Wharton to discuss his business plans. An edited transcript of the conversation follows. Knowledge at Wharton: What inspired the idea behind Hydros? Winston Ibrahim: The idea behind Hydros that my cofounders and I had was one about the ridiculousness of the consumption of bottled water. Over the past 30 years, it has become, effectively, a social stigma to drink water out of the tap. [As a result,] there’s been a multibillion-dollar [sales] growth in the bottled water industry.…