Septic system requirements in Lemhi County, Idaho
The septic rules landplan.io applies in Lemhi County, what a septic tank costs there, and the parcel data we hold.
Updated
Design a septic system for an address in Lemhi County
Idaho's state rules apply in Lemhi County: landplan.io has no county rules of its own here. State rules: Reviewed See Idaho's rules
Septic systems allowed in Lemhi County
The system types landplan.io permits in Lemhi 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 Lemhi 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 Lemhi County
| From | To | Distance |
|---|---|---|
| Polygon | Existing Septic Component to be Abandoned | 5 ft |
These are the values the landplan.io design engine applies in Lemhi County. Confirm a design with the Idaho health department or your county's before you build.
Parcel data in Lemhi County
landplan.io has parcel boundaries for Lemhi County (100% of its area): type an address and the design starts from the parcel.
Septic companies, designers and jobs in Idaho
Where the rules come from
The regulations and documents landplan.io's Lemhi County, Idaho rules are read from:
Near Lemhi County
- Custer County
- Valley County
- Clark County
- Butte County
- Idaho County
- Blaine County
- Boise County
- Camas County
- All of Idaho
Questions
What septic systems are allowed in Lemhi County?
landplan.io designs by Idaho'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 Lemhi County?
landplan.io sizes the septic tank in Lemhi 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 Lemhi County, Idaho?
Yes: parcel boundaries cover Lemhi County (100% of its area).