Start MSGP Renewal With Your Current Stormwater Program
For industrial facilities in Texas, maintaining compliance with stormwater permitting requirements involves more than submitting an application when a permit renewal period opens.
The Texas Pollutant Discharge Elimination System (TPDES) Multi-Sector General Permit (MSGP), TXR050000, establishes requirements for certain industrial facilities that discharge stormwater associated with industrial activities. These requirements are intended to help prevent pollutants from entering nearby surface waters through stormwater runoff.
As facilities prepare for the 2026 MSGP renewal, reviewing existing stormwater management practices is an important first step. Changes to facility operations, site conditions, drainage patterns, or industrial activities may affect how stormwater is managed and whether existing documentation accurately reflects current conditions.
Rather than treating renewal as a paperwork exercise, facilities should use this opportunity to evaluate their overall stormwater program and address potential gaps.
What Is the Texas MSGP?
The MSGP is a general permit issued by the Texas Commission on Environmental Quality (TCEQ) that authorizes eligible industrial facilities to discharge stormwater associated with regulated industrial activities, subject to applicable permit conditions.
Facilities covered under the permit must develop and implement a Stormwater Pollution Prevention Plan (SWP3) that identifies potential pollutant sources, describes stormwater management practices, and establishes procedures for inspections, monitoring, and other applicable requirements.
The specific requirements depend on the facility’s industrial sector, activities, discharge characteristics, and other site-specific conditions.
The 2026 MSGP became effective August 14, 2026, replacing the previous permit. Existing permittees must submit the applicable renewal Notice of Intent (NOI) or No Exposure Certification (NEC) to continue their authorization.
Review Your SWP3 Before Renewing Coverage
The SWP3 is the foundation of an industrial facility’s stormwater compliance program. It documents how the facility identifies and manages potential stormwater pollution sources and establishes the practices used to reduce pollutant exposure and prevent unauthorized discharges.
Before renewing coverage, facilities should evaluate whether their existing SWP3 accurately represents current operations and site conditions.
Important areas to review include:
Facility Activities and Operations: Have industrial activities changed since the SWP3 was last updated? New equipment, material storage areas, processing activities, or changes in operations may introduce additional potential pollutant sources.
Outfalls and Drainage Areas: Are all applicable stormwater outfalls identified? Facility modifications, grading, drainage improvements, or changes to site layout may affect how stormwater flows across the property and where it leaves the facility.
Potential Pollutant Sources: Does the SWP3 accurately identify areas where industrial materials or activities may be exposed to stormwater? This may include loading and unloading areas, material storage, equipment maintenance, waste handling, and processing areas.
Best Management Practices: Are existing structural and nonstructural controls appropriate for current facility conditions? Facilities should evaluate whether practices such as good housekeeping, spill prevention, material containment, and erosion controls are being implemented effectively.
Site Maps and Documentation: Do facility maps, drainage information, outfall locations, and supporting documentation reflect current conditions? Outdated information can make it more difficult to demonstrate that the stormwater program is being properly implemented.
An updated SWP3 helps ensure that the facility’s stormwater management practices are aligned with its actual operations.
Evaluate Inspection and Monitoring Requirements
Maintaining MSGP coverage also involves ongoing inspection and monitoring responsibilities. Facilities should review their records to determine whether applicable requirements have been completed and documented.
Depending on the facility’s sector and permit conditions, these responsibilities may include:
- Routine facility inspections.
- Visual examinations of stormwater discharges.
- Analytical monitoring for applicable pollutants.
- Benchmark monitoring, where required.
- Corrective action documentation when applicable.
- Annual reporting and other required recordkeeping.
Inspection and monitoring requirements are not identical for every industrial facility. The applicable sector requirements, discharge conditions, and other permit provisions determine which activities must be completed.
A renewal review is a good opportunity to identify missed inspections, incomplete monitoring records, unresolved corrective actions, or documentation gaps that may need attention.
Account for Changes in Facility Conditions
Industrial facilities are rarely static. Over time, operations expand, equipment is replaced, materials are relocated, and site layouts change.
Even relatively small modifications can affect stormwater management. A new outdoor storage area, expanded loading zone, additional processing equipment, or modified drainage feature may introduce new potential pollutant sources or change existing runoff patterns.
Facilities should consider whether changes have been reflected in their SWP3 and whether additional stormwater controls or documentation may be necessary.
This review is particularly important for facilities that have experienced operational changes since their last permit authorization or SWP3 update.
Understanding the 2026 MSGP Renewal Deadline
TCEQ issued the renewed 2026 MSGP with an effective date of August 14, 2026. Existing permittees seeking to continue their authorization must submit the applicable renewal application.
The renewal process generally involves submitting one of the following through TCEQ’s electronic permitting system, STEERS/ePermits:
- Renewal Notice of Intent (NOI): For facilities seeking continued MSGP authorization.
- Renewal No Exposure Certification (NEC): For eligible facilities that qualify for the no-exposure exclusion under the applicable permit requirements.
The 2026 permit requires facilities to develop and implement an updated SWP3 before submitting an NOI for coverage.
TCEQ initially established November 12, 2026, as the renewal deadline. However, following a temporary STEERS outage, TCEQ extended the deadline to December 28, 2026.
Facilities should consult TCEQ’s current MSGP guidance for the latest application instructions and submission procedures. The renewal application fee is $100.
How ESE Partners Supports Industrial Stormwater Compliance
Preparing for MSGP renewal can involve more than updating a permit application. Facilities may need assistance evaluating existing stormwater practices, identifying compliance gaps, updating documentation, and addressing operational changes.
ESE Partners supports industrial facilities throughout Texas with stormwater permitting and ongoing compliance services.
Our Compliance team can assist with:
- SWP3 development, review, and updates.
- Stormwater inspections and compliance evaluations.
- Identification of potential pollutant sources and stormwater outfalls.
- Monitoring coordination and reporting support.
- Evaluation of best management practices and corrective actions.
- Ongoing environmental management and regulatory compliance support.
Whether a facility needs assistance preparing for permit renewal or wants to improve its ongoing stormwater management program, ESE can help evaluate current conditions and identify practical next steps.
Make MSGP Renewal an Opportunity to Improve Your Program
The MSGP renewal process is an opportunity to take a closer look at how stormwater is managed across your facility.
Reviewing the SWP3, evaluating site conditions, confirming inspection and monitoring responsibilities, and addressing documentation gaps can help facilities maintain a more accurate and effective stormwater compliance program.
Rather than waiting until the next inspection or compliance issue to identify deficiencies, facilities can use renewal as a starting point for a more proactive approach.
