To prepare for the 2028 CWEA Centennial, the History Working Group is investigating important wastewater-related milestones from the year our Association was established. A notable milestone was the City of Santa Cruz completing its inaugural comprehensive wastewater collection system, treatment plant, and ocean outfalls in 1928. Importantly, CWEA founding members Chester Gillespie and Charles Gilman...

Project Partners: City of Victorville and Woodard & Curran (which operates the Victorville Industrial Wastewater Treatment Plant (IWWTP)) Facility: Southern California Logistics Airport (SCLA) Industrial Wastewater Treatment Plant, which includes the Victorville Industrial Wastewater Treatment Plant (IWWTP), located at the former George Air Force Base in Victorville Established: IWWTP was first built in 2012 Average...

Project Partners: East Valley Water District (EVWD), Balfour Beatty with Arcadis, Ruhnau Clarke Architects, Trussel Technologies, and WSP Name of Project: The Sterling Natural Resource Center The Sterling Natural Resource Center (SNRC) integrates innovative technologies, a multi-benefit approach, and a focus on maximizing resources to design and construct a facility that models sustainable infrastructure development,...

Population Served: 484,000 Collection System Gravity Sewers: 203 miles Force Mains: 16.67 miles Pump Stations: 10 Number of Service Connections: 20,747 Range of Pipe Sizes: 6 to 30 inches In 2008, the District adopted its Lateral Reimbursement Program (LRP), which provides customers with a 50% reimbursement, up to a maximum of $3,000, for qualified sewer...

Population Served: 200,000 Established: 1909 Collection System Gravity Sewers: 360 miles Force Mains: 3.27 miles Laterals: 229 miles Pump Stations: 27 Number of Service Connections: 48,577 Range of Pipe Sizes: 4 inches to 30 inches “The City’s GIS Section helped us by putting together a map identifying all food service establishments, sewage spill sites, high...

Service Area: The service area includes 13 cities and towns in Contra Costa County, including Alamo, Clayton, Clyde, Concord, Danville, Lafayette, Martinez, Moraga, Orinda, Pacheco, Pleasant Hill, San Ramon, and Walnut Creek. Population Served: 484,000 Established: 1946 Collection System Gravity Sewers: 1,519 Force Mains: 21 Laterals: N/A Pump Stations: 18 Number of Service Connections: 155,660...

Name of Facility: 4S Ranch Water Reclamation Facility Population Served: Approximately 87,000 customers in Encinitas, Carlsbad, San Diego, Solana Beach, and neighboring communities. Established: OMWD was incorporated in 1959. The 4S Ranch Water Reclamation Facility was built in 1990. Average Daily Capacity: Design capacity is 2 mgd, with a current daily average of approximately 1.2...

Name of Facility: Oro Loma/Castro Valley Water Pollution Control FacilityPopulation Served: Approximately 190,000Established: Oro Loma Sanitary District was founded in 1911. Construction for the Oro Loma/Castro Valley Water Pollution Control Facility was completed in 1950.Average Daily Capacity: 20 mgd Dry Weather Capacity, 106 mgd Wet Weather Process Description Advanced Secondary – Modified LudzackEttinger Nitrification/Denitrification Process....

The Encina Water Pollution Control Facility (EWPCF) plays an essential role at the Encina Wastewater Authority (EWA), serving over 380,000 residents in North San Diego County. Originally constructed in the 1960s, EWPCF has evolved into a Class V wastewater treatment plant designed to handle an ultimate average dry weather flow capacity of 40.5 mgd of...

Some of the deadliest hazards we face are those found in confined spaces. Working to control these hazards and promote safe work practices can prevent injuries and save lives. In the water and wastewater industry, entering confined spaces is a routine aspect of an operator’s daily tasks. Common confined spaces include system pipelines, manholes, vaults,...