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Presented by: CWEA-San Francisco Bay

Union Sanitary District Treatment Plant Tour


  • August 1
  • 9:30 am - 1:00 pm


Union Sanitary District
5072 Benson Rd
Union City, CA 94587 United States
+ Google Map
Contact Hours: 8:00 A.M. - 5:00 P.M.
  • Member price: $30
  • Non-member price: $35 (Students $10)
  • Conventional waste water treatment plant with an average dry weather flow of 22.92 MGD
  • Grit is separated after the Primary Clarifier by a system called “Teacup Degritters”
  • Neuros Highspeed Blower, added in 2016, provides air to its covered aeration basins
  • Cogeneration facility uses its own natural gas to power two Jenbacher 850 KW generators that provides roughly 75% of the plant’s power. Put into service in 2014.

Attendance is limited to 50, reserve your spot soon!

Pay at the door.

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