TCEQ Releases New Multi-Sector General Permit for Industrial Stormwater Discharges 

Staying ahead of the 2026 MSGP renewal helps your facility maintain uninterrupted permit coverage, reduce compliance risk, and move through the transition without last-minute surprises. Facilities that prepare early give themselves more time to update documentation, close any gaps, and keep operations running smoothly through the next five-year cycle. 

The Texas Commission on Environmental Quality (TCEQ) has issued a new Multi-Sector General Permit (MSGP) for industrial stormwater discharges, opening an important compliance transition for thousands of facilities across the state. Issued under Section 402 of the Clean Water Act and Chapter 26 of the Texas Water Code, the new permit replaces the previous MSGP that became effective on August 14, 2021. Reviewing your compliance program, updating stormwater documentation, and preparing renewal materials now is the best way to protect your coverage before deadlines arrive. This new permit is issued under Section 402 of the Clean Water Act and Chapter 26 of the Texas Water Code and replaces the previous MSGP that became effective on August 14, 2021. 

For thousands of industrial facilities operating under the MSGP, the issuance of the new permit begins an important compliance transition period that requires timely action to maintain permit coverage. 

Why This Renewal Matters 

• Maintaining uninterrupted permit coverage 
• Avoiding compliance risks 
• Identifying outdated stormwater program elements 
• Preparing for updated permit requirements 

Key Dates to Know 

The newly issued permit includes the following important dates: 

Effective Date: August 14, 2026 

Expiration Date: August 14, 2031 

The permit will govern industrial stormwater discharges for the next five-year permit cycle. Facilities currently operating under the 2021 MSGP should begin preparing now to ensure a smooth transition to the new authorization requirements. 

What Existing Permittees Need to Know 

Facilities currently authorized under the 2021 MSGP are not automatically covered under the new permit.

TCEQ is allowing existing permittees to continue operating under their current authorization for up to 90 days following the effective date of the new permit. However, by the end of that 90-day period, facilities must update their Stormwater Pollution Prevention Plan (SWP3) and obtain coverage under the newly issued permit. 

To maintain compliance, existing permittees must submit either: 

• A new Notice of Intent (NOI), or 
• A new No Exposure Certification (NEC), if applicable

For most facilities, this means application materials must be submitted to the TCEQ on or before November 12, 2026.

Why Facilities Should Not Wait 

Although the deadline may seem months away, renewal cycles often create a surge in permit applications, compliance reviews, and SWP3 updates. 

Many facilities discover during the renewal process that: 

• Changes to permit requirements may result in new compliance obligations requiring SWP3 revisions 
• Site maps are outdated 
• Facility operations have changed since the last permit cycle 
• Benchmark monitoring records are incomplete 
• Best Management Practices (BMPs) are not adequately documented 
• Employee training records require updates 
• SWP3s no longer reflect current site conditions 

Identifying and correcting these issues takes time, making early preparation essential. 

 
Recommended Next Steps 

1. Review Existing Permit Coverage 

Confirm that facility ownership, operator information, SIC codes, outfalls, and industrial activities remain accurate and consistent with permit records. 

2. Evaluate and Update Your SWP3 

Many SWP3s are updated only when necessary, resulting in outdated site maps, drainage descriptions, inspection procedures, or BMP inventories. 

A comprehensive review should evaluate: 

• Facility drainage patterns 
• Material storage practices 
• Spill prevention measures 
• Inspection programs 
• Employee training records 
• Monitoring procedures 

Facilities that wait until renewal deadlines approach often discover documentation deficiencies that require significant effort to correct. 

3. Assess Monitoring and Reporting Programs 

Industrial facilities should review benchmark monitoring data, corrective action records, and electronic reporting practices to identify recurring compliance challenges. 

TCEQ continues to expand electronic reporting requirements, making it increasingly important for facilities to understand and utilize platforms such as NetDMR. 

4. Conduct a Stormwater Compliance Audit 

Renewal periods are an ideal time to perform a comprehensive compliance assessment. 

A third-party review can often identify issues such as: 

• Incomplete inspections 
• Missing documentation 
• Outdated SWP3 requirements 
• Potential changes with Outfalls  
• BMP maintenance concerns 
• Potential monitoring deficiencies 

Addressing these items proactively can reduce compliance risk and improve facility readiness. 

How We Can Help 

We help industrial facilities throughout Texas manage industrial stormwater compliance and MSGP-related needs, including: 

• MSGP permit renewals 
• Stormwater Pollution Prevention Plan (SWP3) development and updates 
• Industrial stormwater compliance audits 
• Stormwater inspections, monitoring, and sampling support 
• Regulatory reporting assistance 
• Annual employee training 
• Renewal application support 
• Corrective action and BMP evaluations 

With the 2026 MSGP renewal approaching, now is an ideal time to review compliance programs and prepare for any changes that may accompany the next permit cycle. 

Don’t Miss the Renewal Deadline 

The new MSGP is effective as of August 14, 2026, and existing permittees will have 90 days to obtain authorization under the new permit. Facilities that prepare early can reduce compliance risk, avoid application delays, and maintain uninterrupted permit coverage through the next five-year permit cycle.

If your facility is covered under the MSGP, consider conducting a compliance review and updating key stormwater documents before the new permit becomes effective.

While renewal deadlines may seem distant, early preparation often gives facilities more time to address documentation gaps, evaluate stormwater programs, and respond to changing permit requirements. Taking a proactive approach now can help maintain compliance and support smoother operations throughout the next permit cycle. 

Our environmental compliance specialists work with industrial facilities across Texas to support stormwater permitting, inspections, monitoring programs, employee training, and MSGP renewals. 

Questions about how the new permit may affect your facility? Contact our team to discuss your stormwater compliance needs and get started with renewal planning. Contact Us