San Antonio vs Austin
Side-by-side FOG compliance comparison between San Antonio, TX and Austin, TX.
| Requirement | San Antonio, TX | Austin, TX |
|---|---|---|
| Plumbing Code | IPC (Texas adopts IPC statewide) | UPC (Austin has historically used UPC with local amendments; Texas state code is IPC but Austin maintains UPC-based local requirements) |
| Min. Trap Size | Minimum 750 gallons for gravity grease interceptors for FSEs; sizing per SAWS requirements and Texas Plumbing Code; smaller hydromechanical interceptors (20-50 GPM) allowed for limited food prep | Grease interceptors less than 100 gallons classified as grease traps (under-sink); gravity interceptors for FSEs sized per Austin Water Utility Design Criteria, minimum 750 gallons for full-service restaurants; sizing based on fixture count and flow rate |
| Pumping Frequency | Every 90 days minimum; SAWS Grease Trap Procedure Manual specifies cleaning must occur before grease and solids exceed 25% of trap capacity | Every 90 days minimum; more frequently if grease and solids exceed 25% of wetted capacity |
| 25% Rule | Yes | Yes |
| Permit Required | Required | Required |
| Permit Fee | FOG permit/registration through SAWS; fees approximately $75-$200 annually | FOG permit/registration required through Austin Water; fees vary by facility size |
| Max Fine | $2,000 per violation per day under City of San Antonio ordinance; SAWS can also assess surcharges for non-compliance | $2,000 per violation per day under Austin City Code; additional penalties for causing SSOs |
| Inspections | SAWS conducts routine inspections; typically annually for FSEs; increased frequency for repeat violators | Austin Water Industrial Waste & Water Protection Division conducts inspections; annually for FSEs with compliance issues; routine inspections on risk-based schedule |
| Record Keeping | Yes | Yes |
| Authority | San Antonio Water System (SAWS) | Austin Water Utility, Industrial Waste & Water Protection Division |
| Establishments | 4,282 | 3,440 |
Key Differences
Even though both cities are in Texas, their FOG compliance requirements can differ significantly at the municipal level. Here are the most important differences restaurant operators should know:
- San Antonio follows the Uniform Plumbing Code (UPC), while Austin uses the Uniform Plumbing Code (UPC). This affects trap sizing calculations and installation standards.
- Pumping schedules differ: San Antonio requires "Every 90 days minimum", whereas Austin requires "Every 90 days minimum".
- Both cities enforce the 25% rule, requiring grease traps to be pumped when grease and solids reach 25% of the trap's capacity.
- Fines differ: San Antonio penalties can reach $2,000 per violation per day under City of San Antonio ordinance; SAWS can also assess surcharges for non-compliance, compared to $2,000 per violation per day under Austin City Code; additional penalties for causing SSOs in Austin.
What This Means for Restaurant Operators
If you operate food service establishments in both cities, understanding these regulatory differences is critical for compliance. Permit requirements vary, so check with each city's wastewater authority before opening a new location. Different plumbing codes (IPC (Texas adopts IPC statewide) vs UPC (Austin has historically used UPC with local amendments; Texas state code is IPC but Austin maintains UPC-based local requirements)) mean trap sizing calculations may produce different results for the same kitchen setup. Always verify current requirements directly with your local wastewater authority or plumbing inspector.
Frequently Asked Questions
How do grease trap requirements compare between San Antonio and Austin?
San Antonio follows the Uniform Plumbing Code (UPC), while Austin uses the Uniform Plumbing Code (UPC). This affects trap sizing calculations and installation standards. Pumping schedules differ: San Antonio requires "Every 90 days minimum", whereas Austin requires "Every 90 days minimum".
Which city has stricter grease trap enforcement, San Antonio or Austin?
Enforcement varies: both cities have similar permit requirements. San Antonio fines: $2,000 per violation per day under City of San Antonio ordinance; SAWS can also assess surcharges for non-compliance. Austin fines: $2,000 per violation per day under Austin City Code; additional penalties for causing SSOs. Always verify with local authorities.
How do pumping schedules differ between San Antonio and Austin?
San Antonio: Every 90 days minimum; SAWS Grease Trap Procedure Manual specifies cleaning must occur before grease and solids exceed 2. Austin: Every 90 days minimum; more frequently if grease and solids exceed 25% of wetted capacity.
Regulations change frequently. Always verify current requirements with your local wastewater authority or plumbing inspector before making compliance decisions. Last updated: March 2026.
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