Stormwater

Helping communities protect water quality through effective stormwater management. We partner with public agencies and organizations to develop and implement practical, science-based stormwater programs that achieve regulatory compliance, improve watershed health, and support resilient communities.

A rural drainage pipe pouring water into a natural ravine, surrounded by green vegetation.
Rain scene on a city street.

Core Services

MS4 permit compliance and program implementation
Stormwater management program development
Watershed-based planning
Green infrastructure planning and design review
Municipal operations and maintenance programs
Stormwater compliance inspections
Regulatory strategy and technical support
Training and program evaluation

California's stormwater programs continue to evolve as communities face increasing regulatory requirements, aging infrastructure, and the need to improve watershed health while building climate resilience. EOA partners with municipalities, regional agencies, and organizations to develop practical, science-based stormwater solutions that support regulatory compliance, protect water quality, and create more sustainable communities. Our team combines technical expertise, collaborative planning, and implementation experience to help clients navigate complex challenges and deliver measurable environmental outcomes.

Featured Projects

Municipal Stormwater Management and NPDES Permit Compliance

Santa Clara Valley Urban Runoff Pollution Prevention Program (SCVURPPP)

Municipal Stormwater Management and NPDES Permit Compliance

San Mateo Countywide Water Pollution Prevention Program (SMCWPPP)
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