ONALASKA, Wis. -

The Onalaska city council approved an ordinance Tuesday night designed to curb underage drinking parties.

The Social Hosting Ordinance will allow police to fine parents who host parties where there's underage drinking upwards of $5,000.

The City Council unanimously approved the ordinance at its meeting.

The mayor says underage drinking is illegal, even if done in a safe setting. And this will help authorities try to stop it. "It basically lets us through the investigation show that if you're aware that this is going to happen on  your premises, that you're responsible for it," said Onalaska Police Chief Jeff Trotnic.

"We want to catch the problem before it becomes a problem. Society is really moving away from this encouraging the drinking at an early age and we certainly want to be at the forefront of that effort," said Onalaska Mayor Joe Chilsen.

Mayor Chilsen says this is part of a nationwide movement.