Dallas vs Fort Worth
Side-by-side FOG compliance comparison between Dallas, TX and Fort Worth, TX.
| Requirement | Dallas, TX | Fort Worth, TX |
|---|---|---|
| Plumbing Code | IPC (Texas adopts IPC statewide; Dallas has local amendments) | IPC (Texas adopted IPC with local amendments) |
| Min. Trap Size | Minimum 750 gallons for gravity grease interceptors for FSEs; sizing per Dallas City Code and Texas Plumbing Code based on fixture count; hydromechanical grease interceptors minimum 20 GPM for limited food prep operations | 1,000 gallons minimum for exterior grease interceptors; hydromechanical grease interceptors (HGIs) must be minimum 50 GPM rated per UPC/manufacturer specs |
| Pumping Frequency | Every 90 days minimum; more frequently if grease and solids exceed 25% of trap capacity | At minimum every 90 days; must be pumped when FOG and solids accumulate to 25% of wetted depth |
| 25% Rule | Yes | Yes |
| Permit Required | Required | Required |
| Permit Fee | Grease trap permit required through Dallas Water Utilities Pretreatment Program; fees vary | Included with Industrial Waste Discharge permit; no separate FOG fee typically published |
| Max Fine | $2,000 per violation per day under Dallas City Code; repeat violations subject to escalating enforcement including potential service disconnection | $2,000 per violation per day (Class C misdemeanor under city code); up to $10,000/day for industrial pretreatment violations |
| Inspections | Dallas Water Utilities Pretreatment Division conducts inspections; annually for permitted FSEs; more frequently for non-compliant facilities | At least annually; high-risk facilities may be inspected quarterly |
| Record Keeping | Yes | Yes |
| Authority | Dallas Water Utilities, Pretreatment Division | Fort Worth Water Department, Environmental Division / Pretreatment Section |
| Establishments | 6,049 | 4,506 |
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:
- Dallas follows the Uniform Plumbing Code (UPC), while Fort Worth uses the Uniform Plumbing Code (UPC). This affects trap sizing calculations and installation standards.
- Pumping schedules differ: Dallas requires "Every 90 days minimum", whereas Fort Worth 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: Dallas penalties can reach $2,000 per violation per day under Dallas City Code; repeat violations subject to escalating enforcement including potential service disconnection, compared to $2,000 per violation per day (Class C misdemeanor under city code); up to $10,000/day for industrial pretreatment violations in Fort Worth.
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; Dallas has local amendments) vs IPC (Texas adopted IPC with local amendments)) 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 Dallas and Fort Worth?
Dallas follows the Uniform Plumbing Code (UPC), while Fort Worth uses the Uniform Plumbing Code (UPC). This affects trap sizing calculations and installation standards. Pumping schedules differ: Dallas requires "Every 90 days minimum", whereas Fort Worth requires "At minimum every 90 days".
Which city has stricter grease trap enforcement, Dallas or Fort Worth?
Enforcement varies: both cities have similar permit requirements. Dallas fines: $2,000 per violation per day under Dallas City Code; repeat violations subject to escalating enforcement including potential service disconnection. Fort Worth fines: $2,000 per violation per day (Class C misdemeanor under city code); up to $10,000/day for industrial pretreatment violations. Always verify with local authorities.
How do pumping schedules differ between Dallas and Fort Worth?
Dallas: Every 90 days minimum; more frequently if grease and solids exceed 25% of trap capacity. Fort Worth: At minimum every 90 days; must be pumped when FOG and solids accumulate to 25% of wetted depth.
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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