When this occurs, a mix of stormwater and untreated sewage discharges directly into the City's waterways. These events are called combined sewer overflows (CSOs) ...

Combined Sewer Overflow (CSO) is when untreated or partially treated combined wastewater discharges from an outfall directly to nearby streams, rivers, ...

CSO's in New York State · What is DEC Doing to Control...

The majority of New York City's sewer system is combined, which means it is used to convey both sanitary and storm flows. Sometimes, during heavy rain and ...

New York State. 43 percent of combined sewer outflows are in urban upstate communities. Combined Sewer Systems.

When the CSS exceeds capacity, all the waste — untreated — is offloaded directly into the water. This is combined sewage overflow (CSO). Combined Sewer System.

In rain events, a combined system diverts flow from the treatment plants to the river. The flow is not treated at the plant. Although there is some basic ...

Feb 26, 2024 · There are 184 communities in the United States portion of the Great Lakes Basin that have combined sewer overflows (CSOs).

Dec 22, 2009 · In NYC, when it rains, a mix of rainwater and wastewater goes to both the POTW and to the river. As a result, after heavy rains our sewer ...