Why Municipal Combined Storm Sewer Systems May Overflow With Pollution During Floods

09/07/24

“Why may municipal combined storm sewer systems overflow with pollution during floods?”

Municipal combined storm sewer systems use the same drainage pipes for both stormwater and wastewater. The resulting water flow is usually treated after the end. When there is a flood, the normal wastewater combined with the extra stormwater may overflow the pipes, causing the pollution to be dumped into water bodies. This is Why Municipal Combined Storm Sewer Systems May Overflow With Pollution During Floods