Authorizing counties to impose a public utility tax.

This bill would allow Washington counties to impose a local tax on utility companies (like water, electricity, and gas providers) based on their gross income from services within the county. Counties could set a tax rate up to 3%, which utilities would add to customer bills and clearly label. The tax would apply to businesses (e.g., factories, data centers) but not residential customers unless businesses also get exemptions. Counties must follow specific rules for when to start the tax and cannot create general residential exemptions. This is a proposed revenue tool for local governments, not yet law.