We have an under sink water filter. These things cost about fifty bucks for just the canister. You can't completely empty them. We use our moho for about 3-4 weeks out of the year. Cant we somehow use...
Our filter goes to a drinking water only faucet. I remove the filter, empty the water as best I can. Place in a plastic bag and freeze. When I notice a decrease in water flow at the faucet I change filters. It's worked fine for us for many years.