Posted: Sun May 13, 2007 1:21 am
You can call the city - ask for the water department - and they should be able to tell you if your water is treated with chlorine or chloramine.
Around here (Texas), water that comes from a tap outside is the same as water that comes from the tap inside - ie, it's all treated water. It's possible to design a system so water that comes from a tap outside is untreated - around here it's done that way at golf courses, for instance. But usually the outside water is just the same as the inside water. Again, the city people should be able to tell you.
If you're using the same water for your inside fish tanks and those fish are ok, then what went wrong with your minnows is probably not a chlorine/chloramine problem. It wouldn't hurt to check with the city anyway just so you'll know what's going on.
SpotsMama