Environmental Rules in Irving, TX (2026)
5 verified environmental rules for Irving, Texas, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Irving requires new development and redevelopment to control post-construction stormwater runoff under Chapter 51, sizing drainage improvements to the 25-year storm for areas under 100 acres, the 50-year storm up to 640 acres, and the 100-year storm above that. Property owners install and maintain the required drainage systems under City Engineer-approved plans.
Irving Stormwater Drainage Design Standards
Some RestrictionsIrving Code of Civil and Criminal Ordinances § 51-4(a)-(b) (Stormwater Management and Drainage, Design Criteria)
(a) Storm drainage improvements shall be designed for the following storm events as shown in table 5-A: Table 51-A Drainage Area Design Storm Frequency Less than 100 acres 25-year frequency design 100 acres to 640 acres 50-year frequency design Over 640 acres 100-year frequency design (b) Computations to determine whether the lots, land, or subdivision will be flooded by rainfall and the sizes ...
Erosion Control
Irving requires an earthwork permit before grading, filling, or excavating, and Section 41-62.6 bars placing fill without controlling erosion on cut and fill slopes with planting, check dams, cribbing, or riprap. The permit costs $35 and sites over five acres need an EPA stormwater permit and engineer-prepared plan.
Irving Erosion Control During Construction
Some RestrictionsIrving Code of Ordinances § 41-62.6 (Erosion control required)
No person shall place fill on a site without preparing and maintaining the faces of cut and fill slopes to control against erosion with effective planting, check dams, cribbing, riprap, or other devices and methods as necessary as soon as is practicable and before calling for an inspection for final approval. It is an affirmative defense to this section that the cut slopes are not subject to er...
Flood Zones
Irving requires a development permit before any construction, grading, or land change occurs in an area of special flood hazard, on top of any building permit. Chapter 47 applies citywide wherever FEMA's flood insurance rate maps show a one-percent annual flood risk, and the Director of Public Works administers and enforces the requirement.
Irving Floodplain Development Permit Rules
Significant RestrictionsIrving Code of Civil and Criminal Ordinances §§ 47-2, 47-4 (Flood Damage Prevention)
§ 47-2. Lands to which chapter applies. This chapter shall apply to all areas of special flood hazard within the jurisdiction of the city. ... § 47-4. Establishment of development permit requirement. A development permit pursuant to this chapter is hereby required to assure conformance with the provisions of this chapter and must be obtained prior to the issuance of any building permit on prope...
Vehicle Idling Restrictions
Irving caps engine idling for trucks over 10,000 pounds at 15 minutes when parked within 300 feet of a home, unless the engine sits in an enclosed structure. The city's noise chapter enforces it with fines up to $500 per day.
Irving Heavy Truck Idling Time Limit
Some RestrictionsIrving Code of Civil and Criminal Ordinances Sec. 22-3(a)(12)
Motor vehicle idling. The operation of any engine of any motor vehicle with a manufacturer's gross weight specification in excess of ten thousand (10,000) pounds within three hundred (300) feet of a residential structure for a period in excess of fifteen (15) minutes unless the vehicle is located in an enclosed structure;
Flood Elevation Requirements
New residential construction in Irving's special flood hazard areas must have the lowest floor, including any basement, elevated at least two feet above the base flood elevation. A registered professional engineer must certify compliance, and once the floor is elevated, the slab cannot sit lower than the top of the street curb on which the structure fronts.
Irving Base Flood Elevation Requirement
Significant RestrictionsIrving Code of Civil and Criminal Ordinances § 47-14(1) (Flood Damage Prevention, Specific Standards of Building Construction)
(1) Residential construction.New construction of any residential structure shall have the lowest floor, including basement, elevated to at least two (2) feet above the base flood elevation. A registered professional engineer shall submit a certification to the director of public works that the standard of this subsection is satisfied. Further, once the above requirement has been met, the floor ...
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