The report notes that microorganisms are the biggest threat to healthy drinking water.

该报告指出，微生物是健康饮用水的最大威胁。

But the healthy water levels on the river might not last much longer.

但这条河的健康水位可能不会持续很长时间。

[Joyce] I've been having a healthy water week.

- [乔伊斯] 我度过了一个健康的饮水周。

You say well, that looks like healthy water to me.

你说得好，我觉得那是健康的水。

So, this is healthy water, then?

- 那么， 这是健康的水吗？

He told The Associated Press that testing for oxygen is one of the best ways to judge how healthy water systems are.

他告诉美联社，氧气测试是判断水域系统是否健康的最好方法之一。