Coal dust? COAL DUST?!?
Where in the world did THAT non-sequitir come from???

I think its quite obvious.

Especially for one insinuating of his superior [intellect] comprehension.

It was an example. So you reduce X, and now you have no money to deal with Y.

Tradeoffs. Simple enough concept. I just picked coal dust as one (as can be rather big problem).

But try to stay on-topic, OK?

I was.

So you spend the money to get arsenic in the water to some (apparently arbitrary) level, and what do you *not* have available anymore?

And you know, re-reading my post, I think its pretty obvious that its an example for you.

But of course, that requires reading *comprehension*.

I agree that there is a concept of "good enough", and that the concept should..no, must be considered in such things as toxicity and its concomittant eradication.

That seems to have been lacking in prior posts, but I am glad to hear that.

Addison