In this section, you will find information about Regional San’s current projects, ongoing planning efforts, and innovative green programs.
From our new evolution in wastewater treatment—the EchoWater Project—to our sustainable efforts in resource recycling, we are committed to improving our operations while minimizing our environmental impacts and maximizing reuse of treatment process by-products.
Regional San is undertaking a monumental effort—called the EchoWater Project—to take our region’s wastewater treatment to a whole new level.
In 2010, Regional San was issued stringent new treatment requirements from the State of California that require us to make the most significant upgrade to our wastewater treatment plant since its original construction. This new system, which must be in place by 2021-2023, will produce cleaner water for discharge to the Sacramento River, as well as for potential reuse as recycled water (e.g., for landscape and agricultural irrigation).
Analysis of levees surrounding the City of West Sacramento basin has suggested that some levees may provide a lower level of flood protection than previously estimated. In particular, these findings suggest that Regional San’s South River Pump Station (SRPS), located in an undeveloped agricultural basin in Clarksburg, needs an increased level of flood protection.
Recycled water is treated wastewater that has undergone additional filtration and disinfection processes to make the water safe for non-potable (non-drinking) uses. Since April 2003, Regional San’s cutting-edge Water Recycling Program (WRP) has provided an environmentally responsible and safe water supply for non-potable purposes, such as landscape irrigation, industrial uses and environmental restoration.
Regional San’s biogas recycling program is just one of the ways Regional San works to reduce impacts to the environment by innovatively reusing valuable resources. Methane gas, or “biogas,” is a by-product of the solids digestion process that is used to produce steam and electricity at the Carson Ice-Gen Project, a cogeneration facility owned by Sacramento Municipal Utility District (SMUD) and located at the Sacramento Regional Wastewater Treatment Plant (SRWTP).
Regional San has developed a diversified biosolids management program that is both environmentally friendly and of high value to ratepayers. This two-pronged program consists of safely and effectively:
Recycling biosolids into environmentally beneficial products
Applying biosolids to land disposal units
Each year, Regional San’s treatment plant processes about 26,000 dry tons of biosolids, making the program one of the largest producers of biosolids in California. Approximately 70 percent of those biosolids are treated and then injected into on-site land disposal units, while the remainder is beneficially recycled at our Biosolids Recycling Facility (a partnership with Synagro).
Regional San is constructing a solar energy project on land at the Sacramento Regional Wastewater Treatment Plant (SRWTP) in Elk Grove. This project increases and diversifies our green energy portfolio, provides a clean and sustainable energy source, and brings financial benefits by reducing energy costs. It also meets environmental requirements for greenhouse gas mitigation as part of the the EchoWater Project, the massive ongoing upgrade of the treatment plant.
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