I have a dehumidifier in my darkroom which produces a couple of gallons of water every two or three days. I usually just dump it down the drain but I often think that the water could be useful. Water condensed by a dehumidifier is essentially distilled water. Isn't it? Provided I keep the coils and the catch basin clean, do you think I could use this water to mix chemistry instead of buying distilled. Just to be sure, I could filter it through one of those Brita water pichers. Couldn't I? Just wondering.