结果表明：该地区以地下水为水源的水厂水中总硬度、铁、锰的含量较高，超标严重。
The report indicates that the samples from waterworks using underground water as the source have much higher Ca, Mg, Fe and Mn content than the standards permitted.
结果表明：该地区以地下水为水源的水厂水中总硬度、铁、锰的含量较高，超标严重。
The report indicates that the samples from waterworks using underground water as the source have much higher Ca, Mg, Fe and Mn content than the standards permitted.
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