Environmental Rules in Oak Lawn, IL (2026)
5 verified environmental rules for Oak Lawn, Illinois, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Oak Lawn bans routing storm water, ground water or surface drainage into its sanitary sewers; downspouts, footing drains and sump pumps must instead run to the storm sewer or a drainage ditch, with violations fined $50 to $750 per day.
Oak Lawn Storm Water Discharge Rules
Some RestrictionsOak Lawn Village Code § 9-4D-11(B)(1)
It shall be unlawful to discharge or cause to be discharged, directly or indirectly, into the sanitary sewer system of the village any ground waters, surface waters, storm waters or any other extraneous flows. 2. It shall be unlawful to make a connection or to maintain or operate a connection which serves any home, building or any other establishment, premises or facilities, and which c...
Erosion Control
Oak Lawn's Building Code requires a maintained silt fence anywhere a construction site borders a street or sidewalk without landscaping, so grading and excavation don't wash dirt and sediment onto public rights-of-way.
Oak Lawn Silt Fence Requirement For Construction
Some RestrictionsOak Lawn Village Code § 6-1A-11
During the construction of any building or structure on any property within the village, if the portion of the property immediately abutting any street or sidewalk, including the parkway area between the street and sidewalk, is not landscaped with either a lawn or other landscaping materials, so as to prevent erosion and the deposit of dirt and/or sediment upon such street or sidewalk, the owne...
Flood Zones
Any development in Oak Lawn's flood-prone areas needs a development permit from the Office of Quality Control, and fill placed in the floodplain must be offset with 1.5 times the storage volume it displaces.
Oak Lawn Flood Plain Development Rules
Some RestrictionsOak Lawn Village Code § 6-14A-6(A), (G)
No person, firm, corporation or governmental body not exempted by state law shall commence any development in the SFHA without first obtaining a development permit from the director of the office of quality control. ... Any placement of fill, structures, or other materials above grade in the flood plain shall require compensatory storage equal to at least one and five-tenths (1.5) times the vol...
Vehicle Idling Restrictions
Oak Lawn bans running truck, reefer, or refrigeration unit engines overnight, from 10:00 p.m. to 6:30 a.m., anywhere within 300 feet of a majority-residential block, under the village's nuisance code.
Oak Lawn Truck and Reefer Idling Limits
Some RestrictionsOak Lawn Village Code § 8-1-3(S)
To operate and/or maintain a motor transport engine, truck engine, reefer and/or refrigeration unit, or to allow a motor transport engine, truck engine, reefer and/or refrigeration unit to be operated on one's property, between the hours of ten o'clock (10:00) P.M. and six thirty o'clock (6:30) A.M. in any place within the village in which the majority of the buildings within a radius of three ...
Flood Elevation Requirements
Oak Lawn requires new construction and substantial improvements in flood hazard areas to raise the lowest floor to the flood protection elevation: the base flood elevation plus one foot of mandatory freeboard.
Oak Lawn Flood Protection Elevation Rules
Some RestrictionsOak Lawn Village Code § 6-14A-2
FLOOD PROTECTION ELEVATION (FPE): The elevation of the base flood or 100-year frequency flood plus one foot (1') of freeboard at any given location in the SFHA. FLOODPLAIN: That land typically adjacent to a body of water with ground surface elevations at or below the base flood or the 100- year frequency flood elevation. Floodplains may also include detached special flood hazard areas, ponding ...
Looking for Cook County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Oak Lawn city rules.
Environmental Rules in Cook County →