Washington SB5450 mandates public disclosure of sewage spills by municipal wastewater treatment plants.

Washington SB5450 requires the Department of Ecology to post notices of sewage spills on its website within four hours of notification. The notice must include details such as the volume of discharge, treatment level, location, and potential impact. The department must also develop a public-facing website with a mapping interface showing sewage spill locations. By March 15, 2026, the department must provide a list of reported sewage spills from the previous year, and by March 15, 2027, it must publish an annual report on sewage spills.

Washington SB5450 mandates public disclosure of sewage spills by municipal wastewater treatment plants.

Washington SB5450 requires the Department of Ecology to post notices of sewage spills on its website within four hours of notification. The notice must include details such as the volume of discharge, treatment level, location, and potential impact. The department must also develop a public-facing website with a mapping interface showing sewage spill locations. By March 15, 2026, the department must provide a list of reported sewage spills from the previous year, and by March 15, 2027, it must publish an annual report on sewage spills.