Seattle vs Miami
Side-by-side FOG compliance comparison between Seattle, WA and Miami, FL.
| Requirement | Seattle, WA | Miami, FL |
|---|---|---|
| Plumbing Code | UPC (Washington State uses Uniform Plumbing Code) | IPC (Florida Building Code, which is based on the International codes) |
| Min. Trap Size | 1,000 gallons minimum for gravity grease interceptors; hydromechanical interceptors per UPC sizing (typically 20-50 GPM) | Gravity grease interceptors: minimum 750-1,000 gallons depending on establishment size and fixture count. Hydromechanical grease interceptors (HGIs/under-sink): rated per GPM of connected fixtures per Florida Building Code. Sizing determined per FOG Control Device Guidance Manual formulas. |
| Pumping Frequency | At minimum every 90 days for the first year; frequency may be adjusted based on monitoring records | As specified in FOG permit conditions; typically every 30-90 days depending on establishment volume. Must be pumped before grease and solids accumulate to 25% of the wetted depth of the interceptor. |
| 25% Rule | Yes | Yes |
| Permit Required | Required | Required |
| Permit Fee | No separate FOG permit fee; covered under King County Industrial Waste discharge program | Initial FOG-1 permit application fee approximately $200; annual renewal fee approximately $65. Fees subject to update per Miami-Dade fee schedule. |
| Max Fine | $10,000 per day per violation under Seattle Municipal Code; King County may impose additional penalties | Up to $15,000 per day per violation under Miami-Dade County Code. Civil penalties and administrative enforcement actions including cease-and-desist orders. |
| Inspections | Annually; King County WTD inspects FSEs on a risk-based schedule | Inspections conducted by Miami-Dade Water and Sewer Department (WASD) on a routine basis; typically annually for compliant FSEs, more frequently for high-risk or non-compliant establishments. Unannounced inspections authorized. |
| Record Keeping | Yes | Yes |
| Authority | King County Wastewater Treatment Division (WTD) Industrial Waste Program; Seattle Public Utilities (SPU) for local sewer connections | Miami-Dade County Water and Sewer Department (WASD), Environmental Compliance Section; Miami-Dade Permitting and Inspection Center |
| Establishments | 6,372 | 6,089 |
Key Differences
As cities in different states, Seattle (WA) and Miami (FL) operate under distinct regulatory frameworks. Here are the most important differences restaurant operators should know:
- Seattle follows the Uniform Plumbing Code (UPC), while Miami 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 Miami requires "As specified in FOG permit conditions".
- 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 Up to $15,000 per day per violation under Miami-Dade County Code. Civil penalties and administrative enforcement actions including cease-and-desist orders. in Miami.
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 (Florida Building Code, which is based on the International codes)) 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 Miami?
Seattle follows the Uniform Plumbing Code (UPC), while Miami 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 Miami requires "As specified in FOG permit conditions".
Which city has stricter grease trap enforcement, Seattle or Miami?
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. Miami fines: Up to $15,000 per day per violation under Miami-Dade County Code. Civil penalties and administrative enforcement actions including cease-and-desist orders.. Always verify with local authorities.
How do pumping schedules differ between Seattle and Miami?
Seattle: At minimum every 90 days for the first year; frequency may be adjusted based on monitoring records. Miami: As specified in FOG permit conditions; typically every 30-90 days depending on establishment volume. Must be pumped befo.
Regulations change frequently. Always verify current requirements with your local wastewater authority or plumbing inspector before making compliance decisions. Last updated: March 2026.
Operating in Both Cities?
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