In article , said...

"Brad" wrote

MTBE is used most places in the winter, isn't it? I don't think it's
easy
to filter out.

Not true, a water service costs much more and is never ending.
Filtration is much better both financially and water quality wise. I
know families paying as much as $100+ per month for delivered bottle
water. He can buy the filter he needs for less than two months of that
and a RO for an extra month. Annual maintenance for a RO would be less
than one month's worth of delivered water services.

RO doesn't remove everything.