Here’s the kicker that nobody tells you: RO systems are incredibly wasteful. For every gallon of fresh, crisp water you drink, about 3 to 4 gallons go straight down the drain. Yes, you read that right. It’s like ordering a pizza and tossing the top three slices in the trash before you eat the fourth one.
But don’t despair! Newer, high-efficiency systems are getting better, only wasting about 1 gallon for every 1 gallon produced. Still, if you’re environmentally conscious, you might want to collect that reject water for your houseplants. They don’t care if it’s a little salty.
