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Septic system requirements in Iroquois County, Illinois

The septic rules landplan.io applies in Iroquois County, what a septic tank costs there, and the parcel data we hold.

Updated

Design a septic system for an address in Iroquois County

Illinois's state rules apply in Iroquois County: landplan.io has no county rules of its own here. State rules: Reviewed See Illinois's rules

7system types permitted
1,000 gallonssmallest septic tank
Coveredparcel data

Septic systems allowed in Iroquois County

The system types landplan.io permits in Iroquois County:

Septic tank size in Iroquois 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:

Septic Tank: minimum size by daily design flow
Daily design flowMinimum tank
up to 240 gal/day1,000 gallons
240 to 360 gal/day1,500 gallons
360 to 600 gal/day2,000 gallons
600 to 720 gal/day2,500 gallons
720 to 840 gal/day2,750 gallons
840 to 920 gal/day3,000 gallons
920 to 1,040 gal/day3,250 gallons

Septic setbacks in Iroquois County

Minimum distances
FromToDistance
PolygonExisting Septic Component to be Abandoned5 ft

These are the values the landplan.io design engine applies in Iroquois County. Confirm a design with the Illinois health department or your county's before you build.

Parcel data in Iroquois County

landplan.io has parcel boundaries for Iroquois County (100% of its area): type an address and the design starts from the parcel.

Septic companies, designers and jobs in Illinois

Where the rules come from

The regulations and documents landplan.io's Iroquois County, Illinois rules are read from:

Near Iroquois County

Questions

What septic systems are allowed in Iroquois County?

landplan.io designs by Illinois's state rules there and permits: Subsurface seepage bed, Subsurface seepage field, Drip Irrigation System, Low Pressure Distribution, Infiltrator Advanced Treatment Leachfield (ATL), Infiltrator Advanced Enviro-Septic® (AES) and Surface Discharging System.

What size septic tank do I need in Iroquois County?

landplan.io sizes the septic tank in Iroquois 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 Iroquois County, Illinois?

Yes: parcel boundaries cover Iroquois County (100% of its area).