What We Do
The Plant Operations and Maintenance Section of the Wastewater Division is
responsible for the treatment facilities and lift stations. Wastewater treatment plant operators monitor
the treatment plant 24 hours a day, 7 days a week to ensure regulatory compliance
and maintain process control. The wastewater treatment plant operators are
certified Grades I through V, as required by the California Water Resources
Control Board, Office of Operator Certification and the maintenance staff are CWEA certified technicians.
The maintenance staff is
responsible for performing preventative maintenance tasks keeping all of the equipment in excellent working condition.
This allows the operations staff to make sure all
processes run smoothly. Maintenance staff works closely with the operations staff to resolve issues that may
arise as to keep disruptions in the process to a minimum. The treatment process and liftstations contain confined
spaces and hazardous chemicals. All of the operations and
maintenance staff are trained in confined space entry, and are First Responders that can assist with
an emergency involving hazardous chemical releases.
Wastewater Treatment Process
Wastewater (liquid waste) from flushing the toilet, bathing, washing sinks and general
cleaning goes down the drain and into a pipe, which joins a larger sewer pipe under the road.
The larger pipe also joins a major pipe that leads to the treatment facility.
For more information on the process, click here.
Frequently Asked Questions
- How does the treatment process work?
- Domestic wastewater is transmitted through the use of 63 sewer lift stations and gravity sewer lines to the Sutter Treatment Plant. The Sutter Treatment Plant provides primary treatment including the removal of 50% of the organic load. The wastewater is then pumped under the Tuolumne River, then it gravity flows 6.5 miles to the Jennings Secondary/Tertiary Treatment Plant where biological treatment further reduces the organic load so the water can be used to irrigate fodder crops on approximately 2,500 acres of City-owned land. The biological treatment consists of three Fixed Film Reactor Towers, 300 acres of oxidation ponds, 100 acres of recirculation channels, and 1,200 acres of storage ponds. Water that is not used for irrigation is stored, disinfected, and then discharge to the San Joaquin River from October through May.
- Where can I find Waste Hauler information?
- Open weekdays from 5:30 am to 5:30 pm
- Closed weekends from 5:30 pm Friday to 5:30 am Monday
- Closed on all observed City holidays
- Emergency contact 24 hour operations staff at (209) 652-2324
In an Emergency
24- hour emergency line
Non-Emergency Police Dispatch