I wonder if our water can have something to do with it? We can't drink it if it's not run through the filter in the house. Taste like a rubber hose!!!!!!
Well water? If you are concerned about something bad in your water there are mail-in kits you can buy to test it. You should do this once in awhile technically anyways if on a well. We are on a well and our water has lots of iron. So it tastes weird unless run through the house system. But it is fine for chickens. We had ours tested though.