Environmental Rules in Houston, TX (2026)
7 verified environmental rules for Houston, Texas, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Houston bans discharging anything other than storm water into its municipal storm sewer system (MS4); construction and industrial sites need EPA/TCEQ permits plus city NOI filings before work begins.
Houston Storm Sewer Discharge Ban (Ch. 47)
Significant RestrictionsHouston Code of Ordinances § 47-741(a)
(a) A person commits an offense if the person threatens to introduce, introduces or causes to be introduced into the MS4 any discharge that is not composed entirely of storm water.
Erosion Control
Houston's Chapter 19 and Design Manual Chapter 9 impose strict grading and drainage requirements. Detention is required for most new development. An engineered grading plan is mandatory for more than 1,000 cubic yards of fill. Post-Harvey rules expanded Zero Net Fill to the 500-year floodplain.
Houston Grading and Drainage Regulations
Light RestrictionsTexas Local Government Code Sec. 232.003(5), (8) (Subdivision Drainage Requirements)
Sec. 232.003. SUBDIVISION REQUIREMENTS. By an order adopted and entered in the minutes of the commissioners court, and after a notice is published in a newspaper of general circulation in the county, the commissioners court may: ... (5) adopt reasonable specifications to provide adequate drainage for each street or road in a subdivision in accordance with standard engineering practices; ... ...
Flood Zones
Houston requires a floodplain development permit for any construction, fill, or land-disturbing activity inside a Houston special flood hazard area, separate from any building permit or plat approval. Skipping the permit is itself unlawful under Code of Ordinances Section 19-16, and permits lapse if work does not start within 18 months or after five years, whichever comes first.
Houston Floodplain Development Permit Requirements
Some RestrictionsHouston Code of Ordinances § 19-16(a)-(c)
(a)A floodplain development permit is required in addition to any other permit that may be required for any development activity in a Houston special flood hazard area. Any development within a Houston special flood hazard area shall be unlawful without a floodplain development permit, regardless of whether a plat is required under chapter 42 of this Code.(b)A floodplain development permit will...
Boat Dock Permits
Houston requires a construction permit from Public Works before building, altering, or repairing any pier or boat dock on Lake Houston, plus a separate annual pier license limited to one per residential lot.
Houston Lake Houston Pier and Dock Permits
Some RestrictionsHouston Code of Ordinances § 23-91
It shall be unlawful to build, erect, alter, or make major repairs to any pier on or in the lake unless a construction permit has been issued by the public works official. An application for a construction permit for a pier must include a plat showing the property lines, the layout of the pier, the designated dockage spaces, and their numbers.
Vehicle Idling Restrictions
Houston falls within the Houston-Galveston-Brazoria ozone nonattainment area, where TCEQ Rule 30 TAC 114.512 limits heavy-duty vehicle idling to five minutes when ambient temperatures are between 40 and 90 degrees.
Idling Restrictions Under TCEQ Rule
Light RestrictionsTex. Health & Safety Code § 382.0191
Sec. 382.0191. IDLING OF MOTOR VEHICLE. (a) In this section, "idling" means allowing an engine to run while the motor vehicle is not engaged in forward or reverse motion.(b) The commission may not prohibit or limit the idling of any motor vehicle with a gross vehicle weight rating greater than 8,500 pounds that is equipped with a 2008 or subsequent model year heavy-duty diesel engine or liquefi...
Cool Roof Requirements
Houston Energy Code amendments to Chapter 28 require low-slope commercial roofs to meet minimum solar reflectance and thermal emittance values, reducing heat absorption and lowering cooling demand in the citys hot, humid climate.
Cool Roof Standards In Energy Code
Light RestrictionsTex. Health & Safety Code § 388.003
Sec. 388.003. ADOPTION OF BUILDING ENERGY EFFICIENCY PERFORMANCE STANDARDS. (a) To achieve energy conservation in single-family residential construction, the energy efficiency chapter of the International Residential Code, as it existed on May 1, 2001, is adopted as the energy code in this state for single-family residential construction. On September 1, 2016, the energy efficiency chapter of t...
Flood Elevation Requirements
In Houston's 0.2% annual chance (500-year) floodplain, new homes and substantial improvements must sit at the minimum flood protection elevation: the 500-year flood elevation plus two feet. The Hurricane Harvey-driven rule took effect September 1, 2018.
Houston Floodplain Rule: Build 2 Feet Above 500-Year Flood
Significant RestrictionsHouston, TX Code of Ordinances §§ 19-2, 19-33(b)
Minimum flood protection elevation means the 0.2 percent flood elevation, plus 2 feet. ... (b) The following additional requirements apply in an X Shaded Zone: (1) Any addition to, and new construction of any residential structure shall: a. Have the lowest floor and all utilities elevated to at least the minimum flood protection elevation ...; (2) Any addition to, and new construction of nonres...
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County ordinances apply to unincorporated areas and may supplement Houston city rules.
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