Municipal stormwater general permits regulate discharges from municipal stormwater systems. These drainage systems are separated from sanitary sewer systems and are owned or operated by cities, ...

When the Legislature established the Cap-and-Invest Program, it decided to give emissions-intensive, trade-exposed industries (EITEs) most of the allowances they need at no-cost through 2034. Without ...

Ecology’s pollution prevention services provide non-enforcement technical assistance to Washington businesses. Our engineers, ...

We regulate water and hazardous waste activities at the Puget Sound Energy (PSE) Electricity Cogeneration Station in Ferndale. The facility began operating in 1994. A natural gas pipeline supplies the ...

Sometimes things happen with wastewater treatment and untreated or partially treated sewage can spill. We created a webpage ...

Transportation is the second largest expense for most Americans, after housing. Switching to an electric vehicle or plug-in hybrid unlocks thousands of dollars in savings for Washingtonians. The ...

Major upgrades to the residential recyling system are coming. Producers will be responsible for residential packaging waste, ...

July 23, 2026 – The public comment period and public hearing are cancelled. VoltaGrid has withdrawn their application, so we will not be issuing a permit. We will not be responding to comments. July 7 ...

An upper segment of the Pilchuck River is one of three locations where bacteria levels have declined. Just before the study began, the Tulalip Tribes and their partners removed a diversion dam to ...

Washington Department of Ecology Director Casey Sixkiller has tapped Nat Kale to serve as director for the agency’s Office of Chehalis Basin. In his role, Kale will oversee the state’s efforts to ...

This Millworks project features affordable housing, an early childhood learning center, and a local food campus/business incubator in Bellingham. It’s a prime example of the kind the return on ...