Sentences with phrase «combined storm sewer»

The site will reduce stormwater run - off into the combined storm sewer by 67 percent through the use of bio-swales (also known as rain gardens) which allow storm water to infiltrate back into the ground where, through phytoremediation, the plants contribute to the filtration of the water.

Not exact matches

«They do have sanitary sewers that are not combined, but when you look at the flow on a regular day, the number of gallons that go through a pump station and then compare it to what happens after a rain storm, they have eight times the water going through,» Mahoney said.

Reilly, Lander, and Heyer all express concerns that neither the mayor's plan nor the federal government's addresses the antiquated infrastructure that allows for combined sewer overflow, which means storm water and raw sewage enter the canal via the same drainage system after even moderate rains.

Combined, these two adjustments would keep runoff water from overwhelming the city's aged sewer system, which today leads to raw waste being flushed into the river during storms.

For example, stormwater across the city of Milwaukee recently showed high human fecal pathogen levels at all 45 outflow locations, indicating widespread sewage contamination.87 One study estimated that increased storm events will lead to an increase of up to 120 % in combined sewer overflows into Lake Michigan by 2100 under a very high emissions scenario (A1FI), 57 leading to additional human health issues and beach closures.

Increased storm events caused by climate change will lead to an increase in combined sewer overflows.91