Because the changing of source water, obvious variety of total degree hardness index about the new source water caused the difference on residents' taste.

结果显示因供水水源的更换，新供水系统总硬度指标显著变化，导致口感差异；

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Because the changing of source water, obvious variety of total degree hardness index about the new source water caused the difference on residents' taste.

结果显示因供水水源的更换，新供水系统总硬度指标显著变化，导致口感差异；

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