Ok to water from a shared bucket?

[cbuchman]

My water is very hard - as humans, we try not to drink it.... The tap water is so hard that sphagnum breaks down in less than a year into a brown gooey mush (and we all knowwthat that results in!). So I use rain water from a rain barrel most of the year. I can't use it when it is freezing outside (since the frozen water would break the rain barrel). So I do use tap water for about 3 month and try to flush with bottled water once a month. You can see the difference in the orchids' response.