Chicago vs San Antonio
Side-by-side FOG compliance comparison between Chicago, IL and San Antonio, TX.
| Requirement | Chicago, IL | San Antonio, TX |
|---|---|---|
| Plumbing Code | IPC (Chicago Building Code based on International Plumbing Code with local amendments) | IPC (Texas adopts IPC statewide) |
| Min. Trap Size | Grease interceptors sized per Chicago Building Code Section 18-29-1003.3.6 table; minimum 750 gallons for gravity interceptors for restaurants; hydromechanical grease interceptors rated at minimum 20 GPM for smaller facilities | 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 |
| Pumping Frequency | Every 90 days minimum or when 25% full (whichever comes first) | Every 90 days minimum; SAWS Grease Trap Procedure Manual specifies cleaning must occur before grease and solids exceed 25% of trap capacity |
| 25% Rule | Yes | Yes |
| Permit Required | Required | Required |
| Permit Fee | Sewer discharge permit required; FOG registration included with building/sewer permits. Permit fees vary based on discharge volume | FOG permit/registration through SAWS; fees approximately $75-$200 annually |
| Max Fine | $1,000 per day per violation under Chicago Municipal Code; repeat offenders face escalating fines | $2,000 per violation per day under City of San Antonio ordinance; SAWS can also assess surcharges for non-compliance |
| Inspections | Chicago Department of Water Management conducts inspections; frequency based on compliance history, typically annually for FSEs | SAWS conducts routine inspections; typically annually for FSEs; increased frequency for repeat violators |
| Record Keeping | Yes | Yes |
| Authority | Chicago Department of Water Management | San Antonio Water System (SAWS) |
| Establishments | 12,246 | 4,282 |
Key Differences
As cities in different states, Chicago (IL) and San Antonio (TX) operate under distinct regulatory frameworks. Here are the most important differences restaurant operators should know:
- Chicago follows the Uniform Plumbing Code (UPC), while San Antonio uses the Uniform Plumbing Code (UPC). This affects trap sizing calculations and installation standards.
- Pumping schedules differ: Chicago requires "Every 90 days minimum or when 25% full (whichever comes first)", whereas San Antonio 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: Chicago penalties can reach $1,000 per day per violation under Chicago Municipal Code; repeat offenders face escalating fines, compared to $2,000 per violation per day under City of San Antonio ordinance; SAWS can also assess surcharges for non-compliance in San Antonio.
What This Means for Restaurant Operators
If you operate food service establishments in either city, 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 (Chicago Building Code based on International Plumbing Code with local amendments) vs IPC (Texas adopts IPC statewide)) 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 Chicago and San Antonio?
Chicago follows the Uniform Plumbing Code (UPC), while San Antonio uses the Uniform Plumbing Code (UPC). This affects trap sizing calculations and installation standards. Pumping schedules differ: Chicago requires "Every 90 days minimum or when 25% full (whichever comes first)", whereas San Antonio requires "Every 90 days minimum".
Which city has stricter grease trap enforcement, Chicago or San Antonio?
Enforcement varies: both cities have similar permit requirements. Chicago fines: $1,000 per day per violation under Chicago Municipal Code; repeat offenders face escalating fines. San Antonio fines: $2,000 per violation per day under City of San Antonio ordinance; SAWS can also assess surcharges for non-compliance. Always verify with local authorities.
How do pumping schedules differ between Chicago and San Antonio?
Chicago: Every 90 days minimum or when 25% full (whichever comes first). San Antonio: Every 90 days minimum; SAWS Grease Trap Procedure Manual specifies cleaning must occur before grease and solids exceed 2.
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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