Beneficial Biosolids Use: Since 2004, Regional San has recycled on average 30 percent of our processed 
biosolids yearly. During 2015, we exceeded our service level goal of 3,650 acres fertilized by producing 
biosolids to fertilize 3,803 acres.  

Community Partnering & Engagement: Regional San engages and partners with stakeholders that 
include regulatory agencies, POTWs, stormwater utilities, agriculture interests, water suppliers, 
environmental justice groups, pharmaceutical interests, pesticide manufacturers, environmental 
organizations, and conservation groups. Examples of this activity include a unique partnership with The 
Nature Conservancy to promote habitat-restoration efforts through the use of recycled water to irrigate 
agricultural and conservation lands; partnering with the Elk Grove Unified School District and other 
agencies and community groups to develop student education and work-experience opportunities 
utilizing two historic properties located on the Bufferlands; partnering with local environmental groups, 
universities, researchers, and farmers to enhance community education, wetlands restoration, and 
research opportunities on the Bufferlands; becoming a founding funding partner for the Powerhouse 
Science Center to build a new, regional science/environmental learning museum; and actively engaging 
in leadership positions with a variety of local, state, and national agencies to promote water quality and 
environmental stewardship.  

Energy Efficiency: Since 2005 Regional San has actively sought solutions for energy reduction and 
improvements through its energy management program. Through energy optimization and forecasting, 
the wastewater treatment plant has saved approximately $400,000 per year and continues to monitor 
and look for additional opportunities to reduce energy usage. 

Energy Generation & Recovery: Since 1996 Regional San has recycled biogas, generating enough energy 
to power 5,800 households per year. In March 2016, Regional San improved facilities and established 
operating procedures to receive fats, oils, grease, and other liquid food waste for codigestion to 
enhance recycled biogas production. In late 2016, a 4 MW solar panel array will be installed at the plant 
to generate clean energy that will replace eight percent of the plant’s electrical usage. Regional San 
continues to investigate innovative green energy alternatives.  

Water Reuse: In 2003 Regional San began operating a 3.5 MGD onsite water recycling facility to irrigate 
local parks, landscape medians, and school fields. In 2004 we established the goal to increase water 
recycling up to 40 MGD over the next 20 years. Several water recycling projects are currently underway 
that will increase water recycling to 56,300 acre feet/year. As well, treatment plant upgrades that will be 
complete in 2023 will produce Title 22 tertiary treated recycled water for all of the plant’s effluent, 
opening opportunities for substantially more water reuse.  

Watershed Stewardship: Regional San participates in a variety of legislative and regulatory forums and 
programs to promote sensible policies regarding watershed management activities, including proper 
disposal of pharmaceuticals and pesticides; promotion of water reuse projects; development of regional 
monitoring programs; and research and sound-science decision-making for the Sacramento/San Joaquin 
Bay Delta. Other Regional San collaborations involve developing water-quality report cards to educate 
the public on the health of local waterways; providing funding for the purchase of low-flush toilets; 
supporting additional research on the risk, fate transport, and potential environmental impacts of trace 
organics; working with manufacturers to support product-stewardship efforts to evaluate entire lifecycle 
cost of products; and securing $10 million of grant funding and continued support to develop the