Multnomah County alleges NW Natural is behind 'substantial portion' of Oregon pollution

PORTLAND, Ore. (KOIN) — Multnomah County added two businesses — including Oregon's largest natural gas supplier — to a lawsuit accusing them of spreading misinformation about climate change and contributing to events such as the deadly heat dome in 2021, attorneys for the county announced Monday.

The lawsuit was originally filed in June 2023 seeking $51 million in damages and $1.5 billion in future damages to help the county pay for the costs of preventing, mitigating, and adapting to global warming caused by fossil fuels.