Seattle vs San Antonio
Side-by-side FOG compliance comparison between Seattle, WA and San Antonio, TX.
| Requirement | Seattle, WA | San Antonio, TX |
|---|---|---|
| Plumbing Code | UPC (Washington State uses Uniform Plumbing Code) | IPC (Texas adopts IPC statewide) |
| Min. Trap Size | 1,000 gallons minimum for gravity grease interceptors; hydromechanical interceptors per UPC sizing (typically 20-50 GPM) | 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 | At minimum every 90 days for the first year; frequency may be adjusted based on monitoring records | 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 | No separate FOG permit fee; covered under King County Industrial Waste discharge program | FOG permit/registration through SAWS; fees approximately $75-$200 annually |
| Max Fine | $10,000 per day per violation under Seattle Municipal Code; King County may impose additional penalties | $2,000 per violation per day under City of San Antonio ordinance; SAWS can also assess surcharges for non-compliance |
| Inspections | Annually; King County WTD inspects FSEs on a risk-based schedule | SAWS conducts routine inspections; typically annually for FSEs; increased frequency for repeat violators |
| Record Keeping | Yes | Yes |
| Authority | King County Wastewater Treatment Division (WTD) Industrial Waste Program; Seattle Public Utilities (SPU) for local sewer connections | San Antonio Water System (SAWS) |
| Establishments | 6,372 | 4,282 |
Key Differences
As cities in different states, Seattle (WA) and San Antonio (TX) operate under distinct regulatory frameworks. Here are the most important differences restaurant operators should know:
- Seattle 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: Seattle requires "At minimum every 90 days for the first year", 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: Seattle penalties can reach $10,000 per day per violation under Seattle Municipal Code; King County may impose additional penalties, 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 (UPC (Washington State uses Uniform Plumbing Code) 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 Seattle and San Antonio?
Seattle 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: Seattle requires "At minimum every 90 days for the first year", whereas San Antonio requires "Every 90 days minimum".
Which city has stricter grease trap enforcement, Seattle or San Antonio?
Enforcement varies: both cities have similar permit requirements. Seattle fines: $10,000 per day per violation under Seattle Municipal Code; King County may impose additional penalties. 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 Seattle and San Antonio?
Seattle: At minimum every 90 days for the first year; frequency may be adjusted based on monitoring records. 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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