Environmental Rules in Berwyn, IL (2026)
3 verified environmental rules for Berwyn, Illinois, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
In the City of Berwyn, Illinois, § 1250.03 requires covered developments to manage the 50-year, 24-hour storm, hold discharge to 0.15 cubic feet per second per acre, and keep runoff from impervious surface off the public right-of-way. A property that cannot fit the controls can apply for a fee-in-lieu through the Zoning, Planning, and Development Commission.
Berwyn, IL Stormwater Management Requirements
Significant RestrictionsBerwyn Code of Ordinances § 1250.03
(A) Purpose. ... The purpose of this section is to establish stormwater management regulations that reduce the volume and rate of stormwater runoff entering the storm sewer system and help prevent flood damages. ... (1) Runoff detention. ... Detention shall be achieved through incorporation of green infrastructure, post-construction stormwater management measures, and BMPs designed to increase ...
Flood Zones
In the City of Berwyn, Illinois, nobody can start any development activity in a floodplain without a development permit from the Building Director/Public Works Director. Buildings in flood prone areas must be anchored, flood-resistant and elevated in utilities, and variances need City Council approval.
Berwyn, Illinois Floodplain Development Permit Rules
Significant RestrictionsBerwyn Code of Ordinances § 1042.25
(C) Permit requirements. No person, firm, corporation or governmental body not exempted by state law shall commence any development activity without first obtaining a development permit from the Building Director/Public Works Director. ... (G) Review of permit application. The Building Director/Public Works Director shall review all permit applications to determine whether proposed building sit...
Vehicle Idling Restrictions
In the City of Berwyn, Illinois, running or idling a motor vehicle while it is standing, parked or resting on a side drive between adjacent buildings is a prohibited noise under Berwyn Code of Ordinances § 666.02(O). The division sets no minute limit and covers that location only.
Berwyn IL Vehicle Idling Rule for Side Drives
Light RestrictionsBerwyn Code of Ordinances § 666.02(O)
No person shall make or cause to be made loud, unnecessary or unusual noises or noises which annoy, disturb, injure or endanger the comfort, repose, health, peace or safety of others in the city. Actions so prohibited include but are not necessarily limited to the following: ... (O) Running or idling vehicles. The running or idling of a motor vehicle, while the motor vehicle is standing, parked...
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County ordinances apply to unincorporated areas and may supplement Berwyn city rules.
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