Next up: faucet-mounted filters. These attach right to your tap. You know, that little plastic box that sticks out like a goofy hat. Prices are $25 to $60 for the unit. Replacement cartridges are about $30 a year total.
But wait. There’s a catch. They slow down your water flow. You’ll be standing there like, “Come on, gravity, do your thing.” Also, some faucets hate them. If your tap is weird-looking, you might need an adapter. That adapter costs an extra $10. Annoying, but not tragic.