Septic system requirements in Washington Parish, Louisiana
The septic rules landplan.io applies in Washington Parish, what a septic tank costs there, and the parcel data we hold.
Updated
Design a septic system for an address in Washington Parish
Louisiana's state rules apply in Washington Parish: landplan.io has no county rules of its own here. State rules: Reviewed See Louisiana's rules
Septic systems allowed in Washington Parish
The system types landplan.io permits in Washington 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 Washington 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 Washington Parish
| From | To | Distance |
|---|---|---|
| Polygon | Existing Septic Component to be Abandoned | 5 ft |
These are the values the landplan.io design engine applies in Washington Parish. Confirm a design with the Louisiana health department or your county's before you build.
Parcel data in Washington Parish
landplan.io has parcel boundaries for Washington Parish (100% 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 Washington 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 Washington Parish
- Tangipahoa Parish
- St tammany Parish
- St helena Parish
- Livingston Parish
- Orleans Parish
- St john the baptist Parish
- East feliciana Parish
- East baton rouge Parish
- All of Louisiana
Questions
What septic systems are allowed in Washington 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 Washington Parish?
landplan.io sizes the septic tank in Washington 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 Washington Parish, Louisiana?
Yes: parcel boundaries cover Washington Parish (100% of its area).