Tim Zimmer wrote:
Our ionizer drinking water filter needs changing once every 8
month or more if the city water is clean. Since our city is pretty
clean I only worry about chlorine. How can I tell if the activated
charcoal filter is still working properly?

Thanks

Question. Why did you buy the filter?

Really, if you don't sense a problem, why have a filter? If you sense
the problem, then that would be time to change it.

--
Joseph Meehan

Dia duit