"People are concerned about nuclear power, but this particular incident is normal water with a bit of radiation. It is well below our regulatory and other limits," OPG's Ted Gruetzner told CTV News Channel Wednesday afternoon.

In a statement, the OPG said the leak will have no impact on the quality of drinking water and poses no risk to human health.

Environment Canada and the CNSC are monitoring the situation.

Demineralized water is water completely free of dissolved minerals and not heavy water, which is used to moderate a nuclear reaction.

John Luxat, a radiation expert with McMaster University, says demineralized water is essentially distilled water used to feed steam generators.

"It is not radioactive; it is not going through the reactors. It is actually just going through steam generators to produce steam to drive the turbines," Luxat told CTV News Channel.