Insights

Washington’s Comprehensive Climate Action Plan (CCAP) lays out a credible, economy-wide roadmap to meet the state’s 2050 climate targets. But projections are a starting line, not a finish line.

Greene Economics led the 2025 update of Thurston County’s On-Site Sewage System Management Plan to meet new state code and strengthen public and environmental health protections for drinking water, shellfish beds, and Puget Sound. The plan targets vulnerable on-site sewage systems—especially in sensitive and flood-prone areas—enhances data and climate change planning, protects sensitive watershed, and supports more than 55,000 systems serving homes and businesses countywide.

Join Greene Economics at the 2025 AWRA-WA State Conference, bringing together water professionals to explore Washington water resources management. Hear from experts, discuss policy and governance, and discover strategies for aligning supply and demand amid climate change.

Greene Economics is leading a SCAG study to quantify the economic, climate resilience, and ecosystem service benefits of Southern California’s natural and agricultural lands. The study will help local governments plan, invest, and prioritize strategies that strengthen communities, enhance regional resilience, and ensure equitable access to these critical resources.

King County has more than 85,000 on-site sewage systems, many nearing the end of their working life. Our cost and equity analysis estimates what it will take to address failing septic systems and shows the county where to focus sewer investment and financial assistance.

What role could industrial hemp play in solving Washington’s housing and climate challenges? James Kunetz of Greene Economics shares takeaways from the Goodness of Hemp Summit and early research findings from our work with WSDA on sustainable building materials, industry barriers, and opportunities to grow the hemp supply chain in Washington State.