Environmental Rules in McKinney, TX (2026)
4 verified environmental rules for McKinney, Texas, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
McKinney operates under a TCEQ MS4 Phase II stormwater permit (TXR040000). Development over 1 acre must submit a Stormwater Pollution Prevention Plan (SWPPP) and file a Notice of Intent with TCEQ. Illicit discharges to storm drains are prohibited.
Environmental: Stormwater
Heavy RestrictionsTex. Commission on Environmental Quality (TCEQ Stormwater Permits)
TPDES Stormwater Construction General Permit, TXR150000, which expires on March 5, 2028. The TCEQ will hold a stakeholder meeting for the renewal of the CGP on June 9, 2026, from 1:30-4:00 pm. Preliminary proposed changes to the general permit will be discussed in a presentation, and input from stakeholders will be gathered during and following this meeting. Please visit the Stormwater Stakehol...
Erosion Control
McKinney requires erosion and sediment control BMPs on all construction sites disturbing 1 acre or more. Silt fences, inlet protection, stabilized construction entrances, and perimeter controls must be installed before earthwork begins and maintained through final stabilization.
Environmental: Erosion Control
Heavy RestrictionsTex. Commission on Environmental Quality (Construction Stormwater)
Construction General Permit (CGP), TXR150000 Stormwater Requirements for Construction Activities Stormwater Pollution Prevention Plan (SWP3) Waivers for Small Construction Activities Stay in Compliance 2023 CGP TXR150000 TCEQ issued the renewal of the CGP with an effective date of March 5, 2023. Construction activities are regulated under the CGP if they discharge stormwater to any surface wate...
Flood Zones
McKinney participates in the NFIP (CID 480134). Properties along the East Fork Trinity River, Wilson Creek, and Honey Creek include mapped SFHA Zones AE and A. Substantial improvement or substantial damage (50 percent rule) triggers full floodplain compliance per Chapter 38 Flood Damage Prevention.
Environmental: Flood Zones
Heavy RestrictionsFEMA Flood Map Service Center — National Flood Insurance Program (NFIP)
FEMA Flood Map Service Center: Welcome! Looking for a Flood Map? Enter an address, a place, or longitude/latitude coordinates: Looking for more than just a current flood map? Visit Search All Products to access the full range of flood risk products for your community. About Flood Map Service Center The FEMA Flood Map Service Center (MSC) is the official public source for flood hazard informatio...
Grading & Drainage
McKinney requires a grading and drainage permit for earthwork exceeding 50 cubic yards or any grading within a floodplain. Site grading must direct runoff to approved drainage systems without increasing discharge to adjacent properties.
Environmental: Grading Drainage
Some RestrictionsTex. Local Government Code Sec. 232.003 (Subdivision 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:(1) require a right-of-way on a street or road that functions as a main artery in a subdivision, of a width of not less than 50 feet or more than 100 feet;(2) requir...
Looking for Collin County county-wide rules?
County ordinances apply to unincorporated areas and may supplement McKinney city rules.
Environmental Rules in Collin County →