知乎盐选 | 1.3 水质指标和水质标准
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水质好坏要有个衡量标准和尺度，因此又提出了水质指标。水质指标表示水中杂质的种类和数量，它是判断水污染程度的具体衡量尺度。同时针对水中存在的具体杂质或污染物，提出了相应的最低数量或最低浓度的限制和要求，即水质的质量标准。
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