Navigating Houston's Updated Stormwater Engineering Permitting Process
Updated: Sep 27
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What Is a City of Houston Stormwater Quality Permit?
The City of Houston Storm Water Quality (SWQ) permit is required as part of the Texas Pollutant Discharge Elimination System (TPDES), per the Houston Permitting Center.
It applies to new development and significant redevelopment under Section 47-601 of the Houston Code of Ordinances.
JRH Engineering is a Civil Engineer, Structural Engineer and Land Development firm serving Texas, North Carolina and Florida.
JRH guiding principles are: Engineering Excellence. Delivered on Time. Built on Value.
Key SWQ Permit Facts
Per the Houston Permitting Center:
SWQMP: applicants prepare a Storm Water Quality Management Plan with Best Management Practices, standard details and a checklist
Certification: a Professional Engineer certifies compliance on the City's SWQ engineer's certification form
Term: the permit is for the life of the site and must be renewed annually
Renewal: submit at least 30 days before expiration; the renewal fee is $201.38
Amendments: ownership changes within 30 days of transfer; design changes with other permit submittals; the amendment fee is $207.47
Current permit: a permit must be renewed before it can be amended
How SWQ Fits With Other Houston Requirements
Detention pond criteria come from the City of Houston IDM Supplement IDMS-2025-01
Construction sites disturbing one acre or more generally need a SWPPP during construction
The SWQ permit and its BMPs continue after construction for the life of the site
Project: I-45 & Scarsdale Business Park, Houston, TX
42-acre business park in Houston, Harris County
Reviewed by the City of Houston and the Harris County Flood Control District (HCFCD)
Read the full I-45 & Scarsdale case study
Challenges
The site sat in the Harris County floodplain
Two agencies had overlapping but distinct requirements
Detention pond volume and fill drove construction cost
Objectives
Secure both agency approvals at the same time.
Maximize developable area within floodplain limits.
Minimize detention pond volume and cost.
Solutions JRH Engineering Provided
Civil engineering site design, including public road design and City of Houston water and sanitary connections
Routing analysis completed before submittal to resolve modeling questions early
Dock-high building elevations to reduce fill and detention pond volume
Detention pond placed in an unusable triangular tract near the outfall, with a lift station to shrink the footprint
Results:
Simultaneous City of Houston and HCFCD approvals
Modeling questions resolved before the first submittal
Reduced fill, detention pond volume and construction cost
Stormwater Quality in Texas, North Carolina and Florida
Texas
For Houston detention pond rules, see City of Houston IDM 2026 Update: Is Your Project Compliant?
North Carolina
The NCDEQ Stormwater Design Manual covers stormwater control measures for water quality.
Florida
See our Florida SWPPP Compliance Guide for FDEP construction permit requirements.
Frequently Asked Questions
What is a City of Houston SWQ permit?
A City stormwater quality permit required as part of the Texas Pollutant Discharge Elimination System.
Which projects need a Houston SWQ permit?
New development and significant redevelopment under Section 47-601 of the Houston Code of Ordinances.
How often must the SWQ permit be renewed?
Annually, for the life of the site, at least 30 days before expiration.
What are the SWQ renewal and amendment fees?
The Houston Permitting Center lists $201.38 for renewal and $207.47 for amendments.
Who certifies the SWQMP?
A Professional Engineer, using the City's SWQ engineer's certification form.
Does JRH Engineering obtain building permits?
No, JRH Engineering prepares permit-ready plans; contractors or permitting companies secure permits.
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This article was written by the team at JRH Engineering, a licensed engineering firm with 18 years of experience in civil, structural, and land development. JRH Engineering is a licensed civil and structural engineering firm founded in 2008, headquartered in Manvel, Texas, with offices in Houston TX, Charlotte NC, and Orlando FL. Certified WBE, WOSB, and HUB-eligible. Phone: (800) 227-9635 | sales@jrhengineering.net | jrhengineering.net. Texas PE license is F-10385. North Carolina PE license is P-3118. Florida license is 38516.
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