SW

Stormwater Directory

Quick Summary

For most Texas projects disturbing 1 acre or more, you need a TPDES Construction General Permit (TXR150000) and a SWPPP. No state-specific inspector certification is required. Projects near the Edwards Aquifer may face additional restrictions.

State-DelegatedVerified 2026-03

Construction Permit

Permit Document
Permit Name
Construction General Permit (TXR150000)
Threshold
≥ 1 acre of land disturbance (or < 1 acre if part of a larger common plan of development)
NOI Lead Time
Must file NOI and receive authorization before construction begins
Application Method
Online via TCEQ Water Quality ePay system
Fee
$325 for projects disturbing < 5 acres; $525 for ≥ 5 acres
Permit Expires
March 5, 2028

SWPPP Requirements

Permit Document
SWPPP Required
Yes
PE Cert Required
No
Template Available
Yes
SWPPP must be on-site and available for inspection. TCEQ provides a sample SWPPP template.

Inspection Requirements

Permit Document
Frequency
Every 14 days and within 24 hours of a rainfall event producing ≥ 0.5 inches
Rain Trigger
Within 24 hours of a rainfall event producing ≥ 0.5 inches
Inspector Qualification
Stormwater Pollution Prevention Plan (SWPPP) Inspector — no state license required but must be knowledgeable
Accepted Certifications
No state-specific cert required; inspector must be 'knowledgeable' in permit requirements and BMP implementation; CPESC, CESSWI accepted but not mandated by TCEQ

Discharge Standards

Permit Document
Turbidity Limit
Not specified in CGP; discharges must not cause or contribute to violations of water quality standards
Effluent limits apply at the point of discharge. Visual monitoring required.

Post-Construction

TCEQ
Required
Yes
Phase II MS4 communities must adopt post-construction stormwater management programs. Requirements vary by municipality.

Impaired Waterbody / TMDL Requirements

Standard Provisions

Texas TPDES Construction General Permit (TXR150000) has standard provisions. No specific permit conditions are systematically triggered by proximity to 303(d)-listed impaired waters in the general permit, though TCEQ may impose individual site-specific conditions for certain sensitive receiving waters. Projects near the Galveston Bay, Corpus Christi Bay, or San Antonio-Guadalupe Estuary watersheds should consult TCEQ for any applicable special conditions.

State-Specific Notes

Texas operates one of the most active stormwater construction permit programs in the country. Projects near impaired water bodies or Edwards Aquifer zones may have additional requirements.

Disclaimer: This information is provided for general reference only and may not reflect the most current regulatory requirements. Always consult the TCEQ website and applicable regulations before beginning any construction activity.