MS4 Outfalls

12/14/25

“What are the outflow points for MS4 systems?”

MS4 systems separate wastewater from stormwater. The wastewater is sent to filtration units, while the stormwater is churned into water bodies. The outflows of these areas are termed MS4 Outfalls. Regulatory agencies like the NYC DEP take steps to ensure MS4 outfalls are safe for the surrounding community.