WA HB1906

Requires the Utilities and Transportation Commission to adopt rules establishing a 7% ceiling on return on equity and total rate of return for water companies, with detailed justification required for any return exceeding 5%

Mandates that all capital improvement projects be included in water system plans approved by the Department of Health, covering at least 10 years of planned improvements, with a waiver process for emergency public health and safety projects

Requires water companies to notify customers and provide them a right of first refusal to purchase the water system before any change of controlling interest can be approved

Prohibits capital improvement costs for one system within a consolidated water system from being included in single tariff pricing if those costs exceed a dissimilar system's costs by more than 5%

Allows water system owners to have water samples checked by the jurisdictional health department without requiring a satellite management agency contract