Most municipalities publish their water quality reports online. If not, they are available upon request and are easily assesed for acceptability. TDS alone is not a good indicator of the overall water quality or "safeness to drink." There is no evidence that drinking hard water opposed to soft water has any effect on the body as far as I'm aware. If you are really concerned, find your local water quality report and post a link or PM it to me or just compare it to health canada's guidlines, or the EPA's.
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