Environmental Rules in Rockwall, TX (2026)
5 verified environmental rules for Rockwall, Texas, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Rockwall bans dumping anything but stormwater into the city's storm sewer system, with civil penalties up to $2,000 per violation per day and criminal misdemeanor charges for violators.
Rockwall Storm Sewer Pollutant Discharge Ban
Some RestrictionsSec. 44-447
No person shall introduce or cause to be introduced into the municipal separate storm sewer system any pollutants or waters containing any pollutants, other than storm water.
Erosion Control
Rockwall requires a grading permit from the city engineer before any filling, grading, or excavation work begins on real property, with extra review for flood- or erosion-prone parcels.
Rockwall Grading & Excavation Permit
Some RestrictionsSec. 38-433
No person shall fill, grade, excavate, or otherwise disturb the surface of real property within the city without first having secured a grading permit from the city engineer. No owner of real property shall knowingly permit another person to fill, grade, excavate, or otherwise disturb the surface of real property within the city without first having secured a permit from the city engineer.
Flood Zones
Any construction, grading, or land alteration within Rockwall's mapped special flood hazard areas needs a floodplain development permit first, enforced by the city engineer under the flood damage prevention code.
Rockwall Floodplain Development Permit Requirement
Some RestrictionsSec. 20-28
A floodplain development permit shall be required to ensure conformance with the provisions of this article.
Vehicle Idling Restrictions
Rockwall requires drivers to shut off the engine, lock the ignition, and remove the key before leaving any vehicle unattended anywhere in the city.
Rockwall Unattended Vehicle Idling Ban
Some RestrictionsSec. 26-504
An operator may not leave the vehicle unattended without stopping the engine, locking the ignition, removing the key from the ignition, setting the parking brake effectively, and, if standing on a grade, turning the front wheels to the curb or side of the highway.
Flood Elevation Requirements
Rockwall requires new and substantially improved buildings in flood hazard areas to sit 2 feet above the base flood elevation.
Rockwall Flood Elevation Freeboard Rule
Significant RestrictionsSec. 20-77(1)
New construction and substantial improvement of any residential structure shall have the lowest floor (including basement), elevated a minimum of 2.0 feet above the base flood elevation caused by discharges resulting from a fully-developed watershed. A registered professional engineer, architect, or land surveyor shall submit a certification to the floodplain administrator that the standard of ...