If your tap water tastes like a swimming pool, yes. If you have old pipes and worry about lead, double yes. If you just want to impress your friends with fancy water, also yes.
They’re not cheap—expect to spend $150 to $500 for a good setup. But you’ll save money on bottled water and feel smug about the environment. Smugness is a powerful motivator.
Just one warning: once you drink RO water, you’ll hate other water. It’s like going from HD TV to a fuzzy rabbit-ear signal. You’ve been warned. Now go get yourself a membrane and become a water snob. Your taste buds will thank you.