BOISE, Idaho (AP) — Livestock groups that want lawmakers to intervene on their behalf after the Idaho Supreme Court ruled in favor of counties in a fight over environmental rules are undecided about introducing a bill in the waning weeks of the 2010 session.

On Feb. 1, state justices ruled against the Idaho Dairy Association, deciding state water-quality laws did nothing to pre-empt counties from passing their own regulations.

The dairy industry, worth $2 billion to Idaho's economy, wants the Legislature to limit such regulation to state and federal, not local, laws.

Brent Olmstead, with the Milk Producers of Idaho, said Wednesday his group is still assessing whether to bring a bill this year.

Olmstead also could recruit other groups over the summer, including manufacturing, that might be interested in broadening a bill's scope to help other industries avoid county intervention.

Copyright 2010 The Associated Press.