Septic system requirements in Lafourche Parish, Louisiana
The septic rules landplan.io applies in Lafourche Parish, what a septic tank costs there, and the parcel data we hold.
Updated
Design a septic system for an address in Lafourche Parish
Louisiana's state rules apply in Lafourche Parish: landplan.io has no county rules of its own here. State rules: Reviewed See Louisiana's rules
Septic systems allowed in Lafourche Parish
The system types landplan.io permits in Lafourche Parish:
- 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 Lafourche Parish
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 Lafourche Parish
| From | To | Distance |
|---|---|---|
| Polygon | Existing Septic Component to be Abandoned | 5 ft |
These are the values the landplan.io design engine applies in Lafourche Parish. Confirm a design with the Louisiana health department or your county's before you build.
Parcel data in Lafourche Parish
landplan.io has parcel boundaries for Lafourche Parish (89.2% of its area): type an address and the design starts from the parcel.
Septic companies, designers and jobs in Louisiana
- Septic companies and distributors in Louisiana
- Septic designers in Louisiana
- Septic design jobs in Louisiana
Where the rules come from
The regulations and documents landplan.io's Lafourche Parish, Louisiana rules are read from:
- Sanitary Code, Individual Sewerage Systems (Louisiana Administrative Code Title 51, Part XIII, Chapter 7) (LAC 51:XIII.701-741 (Ch. 7))
- LAC 51:XIII Chapter 3 - General Requirements for Sewage Disposal (Louisiana State Sanitary Code, Part XIII, sections 301-309) (LAC 51:XIII.301-309)
- LAC 51:XIII Chapter 15 - Sewage Loading Criteria (Louisiana State Sanitary Code, Part XIII Sewage Disposal, section 1501) (LAC 51:XIII.1501)
- LAC 51 Part XII - Water Supplies (Louisiana State Sanitary Code), from the Office of the State Register (one page per section) (LAC 51:XII)
Near Lafourche Parish
- Jefferson Parish
- St Charles Parish
- Terrebonne Parish
- St james Parish
- St john the baptist Parish
- Assumption Parish
- Orleans Parish
- Plaquemines Parish
- All of Louisiana
Questions
What septic systems are allowed in Lafourche Parish?
landplan.io designs by Louisiana'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 Lafourche Parish?
landplan.io sizes the septic tank in Lafourche Parish 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 Lafourche Parish, Louisiana?
Yes: parcel boundaries cover Lafourche Parish (89.2% of its area).