问题
问答题 简答题
生活饮用水卫生标准中一般化学指标有多少项？其中对水的pH值和总硬度有何要求？
答案
参考答案：
生活饮用水卫生标准中一般化学指标共15项，标准规定pH值的范围为6.5～8.5。总硬度（以碳酸钙计）为450mg/L。
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生活饮用水卫生标准中一般化学指标有多少项？其中对水的pH值和总硬度有何要求？
参考答案：
生活饮用水卫生标准中一般化学指标共15项，标准规定pH值的范围为6.5～8.5。总硬度（以碳酸钙计）为450mg/L。
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