Septic system requirements in Custer County, Idaho
The septic rules landplan.io applies in Custer County, what a septic tank costs there, and the parcel data we hold.
Updated
Design a septic system for an address in Custer County
Idaho's state rules apply in Custer County: landplan.io has no county rules of its own here. State rules: Reviewed See Idaho's rules
Septic systems allowed in Custer County
The system types landplan.io permits in Custer 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 Custer 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 Custer County
| From | To | Distance |
|---|---|---|
| Polygon | Existing Septic Component to be Abandoned | 5 ft |
These are the values the landplan.io design engine applies in Custer County. Confirm a design with the Idaho health department or your county's before you build.
Parcel data in Custer County
landplan.io has parcel boundaries for part of Custer County (45.3% of its area). Elsewhere you draw the lot on the map.
Septic companies, designers and jobs in Idaho
Where the rules come from
The regulations and documents landplan.io's Custer County, Idaho rules are read from:
Near Custer County
- Lemhi County
- Blaine County
- Camas County
- Butte County
- Valley County
- Boise County
- Elmore County
- Lincoln County
- All of Idaho
Questions
What septic systems are allowed in Custer 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 Custer County?
landplan.io sizes the septic tank in Custer 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 Custer County, Idaho?
For part of it (45.3% of its area); elsewhere you draw the lot on the aerial map.