水源里

1

对，它们不经处理就直接排到城市居民的饮用水源里了。

Yeah . They are emitted directly into urban water supplies .
2

这种矿物质自然产生于所有水源里，研究表明氟有助于防止蛀牙。

This mineral occurs naturally in all water sources , and research shows it helps prevent cavities .
3

水源里有一只湖怪，导致了瘟疫。

There 's an monster an afanc in the water supply , that 's what causing the plague .
4

最后，妨害法不能提供一个监督污染物排放进空气与水源里去的系统机制。

Finally , nuisance law simply fails to provide a systematic mechanism for supervising pollutant discharges into the ambient air and water .