Los Angeles vs San Francisco
Side-by-side FOG compliance comparison between Los Angeles, CA and San Francisco, CA.
| Requirement | Los Angeles, CA | San Francisco, CA |
|---|---|---|
| Plumbing Code | UPC (California Plumbing Code based on Uniform Plumbing Code) | UPC (California uses Uniform Plumbing Code) |
| Min. Trap Size | Gravity grease interceptors minimum 750 gallons for food service establishments per LA Municipal Code; hydromechanical grease interceptors minimum 20 GPM (under-sink units); sizing per California Plumbing Code Section 1014.2 based on fixture unit count and flow rate | 1,000 gallons minimum for gravity grease interceptors; smaller hydromechanical interceptors must be minimum 50 GPM and certified by PDI |
| Pumping Frequency | Minimum every 90 days; more frequently if 25% grease cap rule is triggered | At minimum every 90 days; more frequent pumping required if the 25% rule is exceeded at any inspection |
| 25% Rule | Yes | Yes |
| Permit Required | Required | Required |
| Permit Fee | Industrial Waste Permit required; fees vary by facility type, typically $200-$800 annually | Wastewater discharge permit fees vary; FOG-specific facility registration is included in the industrial waste permit program |
| Max Fine | $25,000 per day per violation under LAMC Section 64.30; criminal penalties up to $1,000/day and/or imprisonment for willful violations | $10,000 per day per violation under San Francisco Public Works Code; additional state penalties may apply under California Water Code |
| Inspections | LA Sanitation conducts periodic inspections; high-risk FSEs inspected annually; routine inspections at minimum every 2-3 years | At least annually; SFPUC may inspect more frequently based on risk or compliance history |
| Record Keeping | Yes | Yes |
| Authority | LA Bureau of Sanitation, Industrial Waste Management Division | San Francisco Public Utilities Commission (SFPUC) Wastewater Enterprise; San Francisco Department of Public Health (DPH) for food facility permits |
| Establishments | 23,693 | 3,920 |
Key Differences
Even though both cities are in California, their FOG compliance requirements can differ significantly at the municipal level. Here are the most important differences restaurant operators should know:
- Los Angeles follows the Uniform Plumbing Code (UPC), while San Francisco uses the Uniform Plumbing Code (UPC). This affects trap sizing calculations and installation standards.
- Pumping schedules differ: Los Angeles requires "Minimum every 90 days", whereas San Francisco requires "At minimum every 90 days".
- 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: Los Angeles penalties can reach $25,000 per day per violation under LAMC Section 64.30; criminal penalties up to $1,000/day and/or imprisonment for willful violations, compared to $10,000 per day per violation under San Francisco Public Works Code; additional state penalties may apply under California Water Code in San Francisco.
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 (UPC (California Plumbing Code based on Uniform Plumbing Code) vs UPC (California uses Uniform Plumbing Code)) 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 Los Angeles and San Francisco?
Los Angeles follows the Uniform Plumbing Code (UPC), while San Francisco uses the Uniform Plumbing Code (UPC). This affects trap sizing calculations and installation standards. Pumping schedules differ: Los Angeles requires "Minimum every 90 days", whereas San Francisco requires "At minimum every 90 days".
Which city has stricter grease trap enforcement, Los Angeles or San Francisco?
Enforcement varies: both cities have similar permit requirements. Los Angeles fines: $25,000 per day per violation under LAMC Section 64.30; criminal penalties up to $1,000/day and/or imprisonment for willful violations. San Francisco fines: $10,000 per day per violation under San Francisco Public Works Code; additional state penalties may apply under California Water Code. Always verify with local authorities.
How do pumping schedules differ between Los Angeles and San Francisco?
Los Angeles: Minimum every 90 days; more frequently if 25% grease cap rule is triggered. San Francisco: At minimum every 90 days; more frequent pumping required if the 25% rule is exceeded at any inspection.
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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