Seasons of flood and drought, eroding shorelines, pollution, increased demand for limited supply, and stringent environmental and security regulations are increasing the pressure at every point in the water cycle.

We partner with clients to thoughtfully navigate regulatory complexities and provide integrated and enduring solutions for the supply and conveyance of treated and recycled water, wastewater, watershed management, and flood control. From concept to completion, we assist with the planning, permitting, and implementation of water projects while minimizing impacts to the environment. This integrated approach saves our clients time and money and advances their strategic resource management and stewardship goals.  

Our expertise is backed by award-winning projects including the Water System Improvement Program PEIR for the San Francisco Public Utilities Commission, recipient of the NAEP 2010 Environmental Excellence Award for Planning Integration.

See How We Do It

Environmental Technical Studies
Federal and State Environmental Compliance
Regulatory Permitting and Compliance Monitoring
Ecosystem Restoration and Mitigation
Environmental and Community Planning
Sustainability and Climate Change


ESA  Staff
Molly Adolfson
Pacific Northwest Water Leader
ESA  Staff
Jim O’Toole
California Water Leader