City of Saginaw MI -
Waste Water Treatment

The design flow of the Saginaw Wastewater Treatment Facility is 32 million gallons per day (MGD). We have a "Combined Sewer System" in which sanitary, industrial and stormwater flow into the same sewer lines. The plant site encompasses approximately forty acres with sixteen buildings. The three main buildings are connected by underground tunnels.

Wastewater flows to the treatment plant primarily by gravity, through sewers ranging in size from 8 inches to 10 feet in diameter. There are approximately 300 miles of sewer lines buried beneath the streets and other areas of the City and parts of areas outside the city limits.

Some low areas have pumping stations to lift wastewater up into another sewer so that it can again flow by gravity to the Wastewater Plant for treatment.

The interceptor (main sewer pipe) conveys the wastewater to the treatment plant, where it enters the raw sewage wetwell approximately 50 feet below ground level. After passing through a coarse barscreen with 3 inch openings, the water is pumped to an elevation several feet above ground level, enabling, under normal conditions, gravity flow through all plant processes, including discharge to the Saginaw river.

When high river water levels, or high hydraulic loading rates through the treatment plant prevent gravity discharge to the river, pumps are available to lift the water again, to allow gravity flow to the river. The river discharge point is at the bottom of the river, in the center of the shipping channel.

A treatment plant uses a series of stages to clean the wastewater before allowing it to be safely released to a lake, river or stream.

Treatment at the Saginaw Wastewater Treatment Facility consists of two major steps. These steps are Primary Treatment and Secondary Treatment. Along with these major treatment processes, the residual left by these processes (bio-solids, more commonly called sludge) also has to be removed. Before the water is discharged to the river, it is also treated with chlorine to kill harmful organisms (pathogens).

The cleaned and disinfected water is then treated to remove excessive chlorine, which could be harmful to aquatic life.

Sanitary ( households) 7.2 MGD
Industrial & Commercial 10.3 MGD
Stormwater & Infiltration 7.5 MGD
Total 25.0 MGD


Enhanced Law Enforcement Response to Victims Initiative:

The Saginaw Police Department is one of only three law enforcement agencies in the country that has been selected to participate in a unique program designed to help reduce crime, support victims, and enhance public safety. We ask that the residents of Saginaw participate in this anonymous survey being conducted by Saginaw Valley State University. Your participation will help the City of Saginaw Police Department expand its capacity to meet the needs of crime victims, and broaden those services where a need is indicated. This short survey is available online at the following button:

Take Survey

How to pre apply for a water utility account:

Pre application instructions can be found here:

Water Billing


Did you know?
The City of Saginaw's TV station (SGTV) is now live online, 24/7? Visit
visit our Youtube channel

Learn more about MMWA 1 step recycling :
watch the new 1 step recycling video on youtube now


The Freedom of Information Act (FOIA) rules have changed. To see how the City of Saginaw is now handling FOIA requests, please visit our new FOIA page.


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