agr.wa.gov

Local wetland regulations: Growth Management Act technical assistance

Now Available: 2022 Wetland Guidance for Critical Areas Ordinance Updates Ecology has completed its 2022 Wetland Guidance for Critical Areas Ordinance (CAO) Updates document. We released a draft for ...
agr.wa.gov

Annual air quality registration

If a business emits air pollution, it is probably regulated by Ecology or a local clean air agency. This may require registering every year. A business must pay a yearly fee based on the amount of air ...
agr.wa.gov

First ‘ZEVergreen’ report will shape affordable clean transportation policy amidst federal interference

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 ...
agr.wa.gov

Helping Washington businesses reduce toxics: Inside Ecology’s Pollution Prevention Incentive Fund

Ecology’s Pollution Prevention (P2) Incentive Fund helps even small innovations make a big difference. TOTE Maritime Alaska’s P2 project installed an aerosol can crusher (on top of barrel shown at ...
agr.wa.gov

Frequently flooded areas: Critical Areas Ordinance

Counties and cities in Washington are required to periodically review and update their Critical Areas Ordinances (CAOs) under the state Growth Management Act. One element of a CAO is a ...
agr.wa.gov

When sewage spills happen, we have the data

Wastewater treatment is one of the most important — and least visible — things that happens in your community every day. For many people, water from your sink, shower, and toilet travels through a ...
agr.wa.gov

Chapter 173-950 WAC - Recycling Reform

Ecology is starting rulemaking for a new rule, chapter 173-950 WAC. This rule will guide implementation of the Recycling Reform Act, a law that creates an extended producer responsibility (EPR) ...
agr.wa.gov

Inside the effort to save Indian Creek

An overturned dual tanker that holds gas and diesel rests in Indian Creek after a July 18, 2025, rollover on U.S. Highway 101. On the morning of July 18, a dual-tanker truck carrying thousands of ...
agr.wa.gov

Rainwater collection

Rainwater collection, including the use of rain barrels, has become more popular as a supplemental source of water. In 2009, we issued a rainwater use interpretive policy, which clarifies that you may ...
agr.wa.gov

What to do if you spill oil or hazardous substances

Dangerous substances can spill to land, water, or air. The sooner a spill is reported, the sooner we can respond. Failure to report a spill you're responsible for could result in penalties.
agr.wa.gov

Municipal stormwater general permits

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, ...
agr.wa.gov

GIS Applications

Ecology uses geographic information system (GIS) tools and procedures as aids in accomplishing its mission of protecting the land, air, and water of the state. The agency built and maintains the GIS ...