There are at least three faucets in my house that we get drinking water from: kitchen and the two upstairs bathrooms. I'm not walking downstairs to the kitchen

There are at least three faucets in my house that we get drinking water from: kitchen and the two upstairs bathrooms. I'm not walking downstairs to the kitchen to get water in the middle of the night. I'd expect the average single family home is similar. That's still $150/year and 36 filter changes. And have you ever met a child? They'll play with and drink almost any source of water. Telling them not to drink from certain faucets is Sisyphean.