Katy requires a stormwater pollution prevention plan and TPDES coverage for any construction site disturbing one or more acres, including post-construction BMPs maintained by the property owner.
Article 3.11 of Chapter 3 (Building Regulations) governs stormwater discharge from construction sites in Katy. No person may begin construction activities disturbing one acre or more, or smaller sites that are part of a larger common plan of development, without first preparing and obtaining approval of a Stormwater Pollution Prevention Plan (SWPPP) compliant with TPDES General Permit No. TXR150000, or obtaining a TCEQ waiver. New development and redevelopment projects disturbing one acre or more must submit a post-construction stormwater management plan incorporating structural and non-structural Best Management Practices (BMPs) before permits issue. The property owner is solely responsible for ongoing operation and maintenance of installed BMPs.
Starting earthwork without an approved SWPPP, failing to install required BMPs such as silt fences and inlet protection, or letting a detention pond fall into disrepair are violations.
See how other cities in Fort Bend County handle stormwater management.
See how Katy's stormwater management rules stack up against other locations.
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