How hard is Castle Rock water?

Hard water is created when water moves through soil and rock dissolving small amounts of naturally occurring minerals. These minerals primarily include calcium and magnesium which are nutrients frequently found in food. Hard water is not a health concern and thus water providers typically do not treat for it. Front Range communities, like Castle Rock, have Moderately Hard to Hard water.

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1. How hard is Castle Rock water?
2. Why is there white residue on my glassware?
3. Is there fluoride in our water?
4. Do I need a water filter?
5. Is bottled water safer than tap water?