MAINE DEVELOPMENT FOUNDATION • November 19, 2025
Each year, the Maine Development Foundation works with the nonpartisan Maine Economic Growth Council to develop the Measures of Growth Report. The indicators included collectively support the idea that Maine’s quality of life depends upon a vibrant and sustainable economy, thriving communities, and a healthy environment. The indicators for the environment:
• In 2024, there were 27 moderately unhealthy days, 12 fewer than in 2023.
• In 2024, Maine maintained its excellent water quality rating.
• In 2023, the ten-year growth-to-removal ratio rose 3% to 1.55 and remained above the sustainability goal.
• From 2020 to 2021, greenhouse gas emissions rose 1.4%.