Septic system requirements in Saint Louis County, Minnesota
The septic rules landplan.io applies in Saint Louis County, what a septic tank costs there, and the parcel data we hold.
Updated
Design a septic system for an address in Saint Louis County
Minnesota's state rules apply in Saint Louis County: landplan.io has no county rules of its own here. State rules: Reviewed See Minnesota's rules
Septic systems allowed in Saint Louis County
The system types landplan.io permits in Saint Louis County:
- Mound system
- Drip-Line Dispersal
- Pressure dosed Trenches
- At-grade system
- Trench system
- Seepage bed system
Septic tank size in Saint Louis County
The daily design flow of a home: 150 gal/day per bedroom, at least 300 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 |
| Bedrooms | Daily design flow |
|---|---|
| 1 | 150 gal/day |
| 2 | 300 gal/day |
| 3 | 450 gal/day |
| 4 | 600 gal/day |
| 5 | 750 gal/day |
| 6 | 900 gal/day |
| 7 | 1,050 gal/day |
| 8 | 1,200 gal/day |
Septic setbacks in Saint Louis County
| From | To | Distance |
|---|---|---|
| Polygon | Existing Septic Component to be Abandoned | 5 ft |
These are the values the landplan.io design engine applies in Saint Louis County. Confirm a design with the Minnesota health department or your county's before you build.
Septic companies, designers and jobs in Minnesota
- Septic companies and distributors in Minnesota
- Septic designers in Minnesota
- Septic design jobs in Minnesota
Where the rules come from
The regulations and documents landplan.io's Saint Louis County, Minnesota rules are read from:
- Subsurface Sewage Treatment Systems (SSTS) Rules, Minnesota Rules Chapters 7080-7083 (Minn. R. chs. 7080, 7081, 7082, 7083)
- 2020 Minnesota Plumbing Code (Minn. R. ch. 4714, 2018 UPC as amended) - UPC 609.2 water pipe and building sewer trenches, 720.1 sewer and water pipes, Table 721.1 building sewer distances (excerpt) (Minn. R. 4714.0050 (incorporating 2018 UPC chs. 2-11, 16, 17); UPC 609.1, 609.2, 609.6.1, 718.1, 718.3, 719.1, 720.1,...)
- Minn. R. 6105.0120 - Sanitary standards for wild, scenic and recreational river land use districts (septic tank and soil absorption setbacks)
- Minn. R. 4714.0609 - Minnesota Plumbing Code amendments to UPC 609 (609.6.1, water supply near sources of contamination) (Minn. R. 4714.0609, subp. 2 (UPC 609.6.1))
- Minn. R. 4725.4450 - Water-supply well distance requirements (isolation distances)
- Minn. R. 6120.3400 - Shoreland sanitary provisions (sewage treatment system setbacks from the ordinary high water level)
Near Saint Louis County
- Lake County
- Itasca County
- Carlton County
- Koochiching County
- Aitkin County
- Cook County
- Cass County
- Pine County
- All of Minnesota
Questions
What septic systems are allowed in Saint Louis County?
landplan.io designs by Minnesota's state rules there and permits: Mound system, Drip-Line Dispersal, Pressure dosed Trenches, At-grade system, Trench system and Seepage bed system.
What size septic tank do I need in Saint Louis County?
landplan.io sizes the septic tank in Saint Louis 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 300 gal/day.