Septic system requirements in Lauderdale County, Alabama
The septic rules landplan.io applies in Lauderdale County, what a septic tank costs there, and the parcel data we hold.
Updated
Design a septic system for an address in Lauderdale County
Alabama's state rules apply in Lauderdale County: landplan.io has no county rules of its own here. State rules: Reviewed See Alabama's rules
Septic systems allowed in Lauderdale County
The system types landplan.io permits in Lauderdale County:
- Elevated Sand Mound System
- Subsurface Pressure Trench System
- Subsurface Trench System
- Infiltrator Advanced Treatment Leachfield
- Infiltrator Advanced Enviro-Septic® (AES)
- Discharging System
Septic tank size in Lauderdale County
The daily design flow of a home: 150 gal/day per bedroom, at least 240 gal/day. The septic tank is sized from that flow:
| Daily design flow | Minimum tank |
|---|---|
| up to 240 gal/day | 1,000 gallons |
| 240 to 360 gal/day | 1,500 gallons |
| 360 to 600 gal/day | 2,000 gallons |
| 600 to 720 gal/day | 2,500 gallons |
| 720 to 840 gal/day | 2,750 gallons |
| 840 to 920 gal/day | 3,000 gallons |
| 920 to 1,040 gal/day | 3,250 gallons |
Septic setbacks in Lauderdale County
| From | To | Distance |
|---|---|---|
| Polygon | Existing Septic Component to be Abandoned | 5 ft |
These are the values the landplan.io design engine applies in Lauderdale County. Confirm a design with the Alabama health department or your county's before you build.
Parcel data in Lauderdale County
landplan.io has parcel boundaries for Lauderdale County (99.9% of its area): type an address and the design starts from the parcel.
Septic companies, designers and jobs in Alabama
- Septic companies and distributors in Alabama
- Septic designers in Alabama
- Septic design jobs in Alabama
Where the rules come from
The regulations and documents landplan.io's Lauderdale County, Alabama rules are read from:
- Chapter 420-3-1 - Onsite Sewage Treatment and Disposal (Ala. Admin. Code r. 420-3-1-.01 through .70)
- Rule 420-3-1-T5, Table 5 - Additional Minimum Setback Distances for a Large-Flow OSS (transcribed from the Administrative Code image) (Ala. Admin. Code r. 420-3-1, Table 5)
- Rule 420-3-1-T6, Table 6 - Additional Minimum Setback Distances for an Innovative EDS (transcribed from the Administrative Code image) (Ala. Admin. Code r. 420-3-1, Table 6)
- Rule 420-3-1-T4, Table 4 - Minimum Setback Distances to Components of an OSS (transcribed from the Administrative Code image) (Ala. Admin. Code r. 420-3-1, Table 4)
Near Lauderdale County
- Colbert County
- Lawrence County
- Franklin County
- Limestone County
- Winston County
- Marion County
- Morgan County
- Madison County
- All of Alabama
Questions
What septic systems are allowed in Lauderdale County?
landplan.io designs by Alabama's state rules there and permits: Elevated Sand Mound System, Subsurface Pressure Trench System, Subsurface Trench System, Infiltrator Advanced Treatment Leachfield, Infiltrator Advanced Enviro-Septic® (AES) and Discharging System.
What size septic tank do I need in Lauderdale County?
landplan.io sizes the septic tank in Lauderdale County from the daily design flow: up to 240 gal/day: 1,000 gallons; 240 to 360 gal/day: 1,500 gallons; 360 to 600 gal/day: 2,000 gallons; larger flows need larger tanks. A home's design flow is 150 gal/day per bedroom, at least 240 gal/day.
Does landplan.io have parcel data for Lauderdale County, Alabama?
Yes: parcel boundaries cover Lauderdale County (99.9% of its area).