Is our water considered hard or soft? What is the average hardness in terms of mg/L and grains?

Our water is considered moderately soft. Our water usually averages between 30-50 mg/L hardness as calcium carbonate or 1.75-2.92 grains of hardness per gallon.

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1. Does our drinking water contain fluoride? If so, how much and can it be harmful to our health?
2. Is our water considered hard or soft? What is the average hardness in terms of mg/L and grains?
3. Is our water treated with chlorine or chloramines?