Public engineering firm profile
Sacramento, CA
Full-service planning and design for water, wastewater, and recycled water projects
HydroScience Engineers is a full-service civil engineering practice based in Northern California that provides planning, design, and construction phase services for water, wastewater, and recycled water projects. Established in 1998, the team delivers comprehensive civil engineering solutions for municipal, tribal, and private clients across California and internationally. Its capabilities span treatment plant design, conveyance infrastructure, water resources management, and regulatory compliance support.
Planning and design of water treatment, storage, and conveyance infrastructure to ensure quality, reliability, and regulatory compliance.
Planning and design of wastewater treatment plants, collection systems, and lift stations for public and private infrastructure.
Strategic feasibility planning, regulatory navigation, and design of recycled water facilities, storage, and distribution systems.
Technical field support, construction monitoring, and system commissioning to transition utility infrastructure into active operations.
Hayward, CA | City of Hayward | Water Supply
Design of water distribution and sewer collection system improvements across 32 separate municipal locations, totaling 5 miles of water and 3 miles of sewer pipelines. The scope resolved pipeline structural issues, improved maintenance access, and managed complex permitting for crossings near BART, Caltrans, and railroad tracks.
San Mateo, CA | County of San Mateo | Wastewater
Planning, design, and construction oversight for a modern wastewater treatment plant (WWTP) and collection system improvements to replace an aging, 50-year-old system. Features a new sewer force main, pump station, and a highly efficient extended aeration process within a low-impact footprint.
2022 | Manteca, CA | City of Manteca | Water Supply
Preparation of a design report, detailed specifications, and construction phase support for Granular Activated Carbon (GAC) treatment systems on four groundwater wells to address 1,2,3-trichloropropane (TCP) contamination. Managed as a collaborative progressive design-build project, securing an ENR California Best Project award.
Mountain View, CA | City of Mountain View | Water Resources
Development of comprehensive Water and Sewer Master Plans utilizing hydraulic modeling and hydrant flow tests. The analysis evaluated existing system capacity, projected future demands based on land use files, and established a prioritized Capital Improvement Program.
Sacramento, CA | SacSewer | Wastewater
Engineering design for the rehabilitation of a 34,000-foot unlined reinforced concrete sewer trunk line. The design utilized cured-in-place piping (CIPP) and open-cut techniques, and integrated new manholes and junction structures to improve future system access.
Sonoma County, CA | Lytton Rancheria | Wastewater
Planning and design of a packaged membrane bioreactor (MBR) wastewater treatment plant and recycled water storage system to support a tribal residential community. Also designed the drinking water system including wells, storage tanks, and arsenic and manganese filtration.
Manteca, CA | City of Manteca | Water Resources
Development of a comprehensive Water Master Plan using calibrated hydraulic models and fire flow testing data. Features a structural condition assessment and a prioritized infrastructure rehabilitation program integrated with a rate study.
Rodeo, CA | Rodeo Sanitary District | Wastewater
Engineering and detailed design for structural, mechanical, and electrical upgrades of a corroded primary clarifier. Improvements included scum skimmer wiper and sludge scraper replacement, structural bridge rehabilitation, protective coatings, and code-compliant electrical conduit replacement.
San Jose, CA | City of San Jose | Wastewater
On-call planning, engineering, and construction support services for a 167 MGD advanced secondary and tertiary wastewater treatment facility. Collaborative tasks addressed urgent operational and maintenance needs across the treatment plant.
Davis, CA | City of Davis | Wastewater
Comprehensive engineering and facility commissioning for a $71M upgrade to modernize an aging treatment plant. Delivered secondary BNR activated sludge facilities, tertiary disc filters, and chlorine disinfection to meet strict discharge regulations.
President
PE
Over 31 years of experience in the implementation of recycled water and potable water distribution system infrastructure, wastewater treatment and collection system design, and master planning. Working out of the Berkeley office, Curtis has been with HydroScience since 2003.
Principal
PE
Bill manages the Sacramento office and brings 33 years of experience in permitting, funding, planning, design, and construction support of water, wastewater, and recycled water systems. He has been with HydroScience since 2005.
Principal
PE
Mary manages the San Jose office and has 35 years of experience in water utility management, water quality, drinking water regulations, water distribution, recycled water, and water resources. She joined HydroScience in 2008.
Principal
PE
Fadi has 30 years of experience in water and wastewater treatment plant planning, design, and construction management. This process design, constructability, and commissioning expertise supports complex municipal plant developments from initial concept to startup.
Principal
PE
Co-founder of HydroScience in 1998, Sim has over 35 years of experience specializing in water treatment plants, water tanks, wells, and pump stations. Sim is based in the Sacramento office.
Principal
PE, PhD
Co-founder of HydroScience in 1998, George has over 42 years of experience in domestic and industrial wastewater treatment, water reclamation, pilot studies, master planning, and construction management. George currently manages the Australia office.