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2. Central Contra Costa Sanitary District - Wikipedia

   en.wikipedia.org/wiki/Central_Contra_Costa...

   The main facility is a 54-million-US-gallon (200,000 m 3) per day treatment plant in residential Martinez, California and it provides service to approx 462,000 residents. [1] It operates and maintains 1,500 miles (2,400 km) of sewer lines out of its second location in Walnut Creek, California. It is a California Energy Commission Showcase Plant.

3. Onsite sewage facility - Wikipedia

   en.wikipedia.org/wiki/Onsite_sewage_facility

   Onsite sewage facilities (OSSF), also called septic systems, are wastewater systems designed to treat and dispose of effluent on the same property that produces the wastewater, in areas not served by public sewage infrastructure. A septic tank and drainfield combination is a fairly common type of on-site sewage facility in the Western world.

4. Aerobic treatment system - Wikipedia

   en.wikipedia.org/wiki/Aerobic_treatment_system

   An aerobic treatment system (ATS), often called an aerobic septic system, is a small scale sewage treatment system similar to a septic tank system, but which uses an aerobic process for digestion rather than just the anaerobic process used in septic systems.

5. California approves rules for converting sewage waste to ...

   www.aol.com/news/california-approves-rules...

   California regulators on Tuesday cleared the way for widespread use of advanced filtration and treatment facilities designed to convert sewage waste into pure drinking water that can be pumped ...

6. Septic tank - Wikipedia

   en.wikipedia.org/wiki/Septic_tank

   A septic tank is an underground chamber made of concrete, fiberglass, or plastic through which domestic wastewater flows for basic sewage treatment. [2] Settling and anaerobic digestion processes reduce solids and organics, but the treatment efficiency is only moderate (referred to as "primary treatment"). [2]

7. California prepares to transform sewage into pure drinking ...

   www.aol.com/news/california-prepares-transform...

   The system purifies wastewater using a three-step advanced treatment process, and the water then percolates and is injected into the groundwater basin, where it becomes part of the supply.