Milwaukee residents asked to use less water sewer overflows

A deluge of rain led to a sewer overflow Sunday night and continued into Monday morning as rain continued to fall throughout the Milwaukee area.

The overflow started at 11:15 pm Sunday night and was ongoing as of 9 am Monday, according to Bill Graffin, the Milwaukee Metro Sewerage District’s public information manager.

Some areas of the MMSD service area had received nearly 7.5 inches of rainfall over the course of Sunday and Monday, prompting the Jones Island facility to release water after reaching its capacity.

One inch of rain in the Milwaukee area equates to about 7.1 billion gallons of water that rush into the combined sewer system.

Sewer overflows prevent sewage backups

MMSD has the ability to allow overflows to happen in order to prevent sewage backups into homes and businesses across the area. Overflows are used after the deep tunnel fills during heavy rain events, and more water is flowing into the treatment plants than can be processed.

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