Question:
Before you take on the job, you might want to check out the differencebetween chlorine and sodium fluoride, and which one is used for waterpurification.

You might also want to check on how well ozonation works on keepingwater germ-free after it leaves the treatment plant, too.

Answer: If you visit Collingwood Ontario, they have a Ozone water purificationsystem.

The water there is good.

47% of Toronto's water is purified through the RC Harris plant. One of thenicest pieces of architecture in North America.

They add Alum (once said to cause ALS, because of it's aluminium content)and Sodium Fluoride.

So far, no problems. The water is OK. A friend of mine is a deep-sea diverand rebuilt their intake pipes. 2 miles off-shore at the bottom of LakeOntario. They've kept the tourists out since 9/11 though. They don't wantno terrorism.