Water Resources Services

At EKI, we bring together decades of technical, engineering, and regulatory expertise to help communities plan, protect, and optimize their water resources. Our multidisciplinary team delivers end-to-end One Water solutions ranging from decision support and strategic planning to regulatory compliance, detailed design, and implementation.

We develop resilient, data-driven strategies that balance water supply reliability, ecosystem health, and long-term sustainability. Our work spans integrated water resource planning, recycled and alternative water supplies, stormwater and watershed management, and adaptive strategies that evolve with changing climate and regulatory conditions.

EKI is an industry leader in groundwater management. Our hydrogeologists and modelers use advanced analytics to characterize basins, assess recharge and storage potential, and evaluate groundwater-surface water interactions. We support clients from basin-scale planning through project design and implementation, including Sustainable Groundwater Management Act (SGMA) compliance, well design and construction support, aquifer testing, and long-term basin sustainability.

We tailor our services to the unique needs of our clients that span a broad range, including publicly owned utilities; special districts; municipalities; regional, state, and federal agencies; investor-owned utilities; and joint power authorities (JPA); and private organizations. The following represents a sample of our water resources expertise:

Water Resources Planning & Decision Support

• Decision support tools and frameworks
• Feasibility studies for alternative water supplies, including reuse (recycled water for non-potable applications and purified water for potable reuse), decentralized systems, stormwater capture, and more
• Water demand forecasting, planning, and water use efficiency (WUE)
• Water supply evaluations, including water rights, source water reliability, and long-term supply planning
• Drought planning, water supply allocation methodologies, and drought response tools
• Integrated Water Resources Plans and One Water Plans

Modeling, Analytics & Optimization

• Groundwater, surface water, and integrated system modeling
• Basin-scale water budget analysis and optimization
• Predictive modeling to support planning, design, and operations

Groundwater & Hydrogeologic Services

• Hydrogeologic investigations and evaluations (local and basin-scale)
• Numerical groundwater modeling and groundwater–surface water interaction analyses
• SGMA implementation, including:
  • Formation and administration of Groundwater Sustainability Agencies (GSA)
  • Basin boundary modifications
  • Reclassification of “Critical Overdraft” basin designations
  • Preparation and peer review of Groundwater Sustainability Plans (GSP)
  • Preparation of GSP Annual Reports
  • Implementation funding (Prop 1 and other grant programs)

California-Specific Water Supply Planning & Reporting

• Urban Water Management Plans (UWMP)
• Groundwater Sustainability Plans (GSP)
• Water Supply Assessments (WSA)
• Annual Water Supply and Demand Assessments (AWSDA)
• Urban Water Use Objective (UWUO) services

Funding Support

• Tracking opportunities and preparing applications to secure external funding, such as state and federal grants and loans, to support project/program planning and implementation

Litigation Support & Expert Services

• Water rights evaluations and groundwater/surface water interaction analyses
• Sustainable yield and basin water budget assessments
• Technical expert support for groundwater basin adjudications
• Evaluation of groundwater models and impacts related to extraction
• Groundwater solute transport analyses and allocation of liability for contamination