McKinney, TX Environmental Rules: Stormwater Management (2026)
Key Facts
- MS4 Permit
- TXR040000
- SWPPP Trigger
- 1 acre
- NOI
- TCEQ filing
- Illicit Discharge
- 2,000 dollars per day
- Only Allowed
- Rainwater
Summary
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.
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 Stakeholders Group webpage for more information. Back to top HOT Renewal of the Multi-Sector General Permit (MSGP), TXR050000 The TCEQ has begun the renewal process for the Stormwater Multi-Sector General Permit (MSGP, TXR050000) for industrial facilities, which expires on August 14, 2026.
Full Breakdown
Chapter 58 Environment of the McKinney Code regulates stormwater consistent with TCEQ General Permit TXR040000. Development disturbing 1 or more acres requires SWPPP, NOI filing, and BMP installation (silt fence, inlet protection, stabilized construction entrance). Only rainwater may enter storm drains. Car wash runoff, concrete washout, paint, and yard chemicals are illicit discharges.
Violations & Fines
Illicit discharge fines up to 2,000 dollars per day. SWPPP non-compliance: stop-work order plus TCEQ referral.
Sources & Official References
Other rules in McKinney
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Stormwater Management in Nearby Cities
How other cities in Collin County handle stormwater management.