Environmental Rules in Mount Vernon, NY (2026)
5 verified environmental rules for Mount Vernon, New York, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Mount Vernon is an MS4 community regulated under NYS DEC SPDES GP-0-15-003. City Stormwater Management Program restricts illicit discharges to storm sewers. Only rainwater may enter catch basins.
environmental/stormwater
Heavy RestrictionsNY SPDES General Permits — MSGP, MS4 GP, CGP (Stormwater Phase II)
The USEPA and New York State Department of Environmental Conservation (NYSDEC) are increasing their attention in several ways. There are three State Pollutant Discharge Elimination System (SPDES) general permits required for activities associated stormwater discharges. The Multi-Sector General Permit for Stormwater Discharges Associated with Industrial Activities (MSGP) addresses stormwater run...
Erosion Control
Soil erosion and sediment control required on land-disturbing activities per NYS DEC SPDES general permit (GP-0-20-001) for 1+ acre sites. City enforces stormwater/erosion standards at building permit review.
environmental/erosion-control
Some RestrictionsCoastal Development
Not applicable. Mount Vernon has no Long Island Sound or tidal waterfront. No coastal development rules apply; NYS DEC tidal wetlands permits not triggered.
environmental/coastal-development
Few RestrictionsFlood Zones
Mount Vernon is largely inland but has FEMA Zone AE along the Hutchinson River and Bronx River corridors. City participates in NFIP; flood insurance mandatory for federally-backed mortgages in SFHAs.
environmental/flood-zones
Some RestrictionsGrading & Drainage
Grading and drainage plans reviewed by the Building Department. Runoff cannot be directed onto adjoining property. Tight urban lots make drainage plans critical.
environmental/grading-drainage
Some RestrictionsLooking for Westchester County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Mount Vernon city rules.
Environmental Rules in Westchester County →