英语达人帮我看看这句话对吗?

问题描述:

英语达人帮我看看这句话对吗?
Numerous lakes have been contaminated by dumping industrial waste without being filtered and which(这里可以用which吗?还是it什么..)
bring enormous detriment to nearby citizens.
这句话对吗?可以在这句话的and后面用which吗?
Numerous lakes have been contaminated by dumping industrial waste into rivers without being filtered and which(这里可以用which吗?还是it什么。)
bring enormous detriment to nearby citizens.
刚少了几个字,这个比较完整 达人能帮忙改下这句子吗?
是否去掉and 变成 逗号(,

这样可以的:Numerous lakes have been contaminated by dumping industrial waste into rivers without being filtered , which bring enormous detriment to nearby citizens