The Septic GuideLicensed septic pros
List Your Business
Idaho County, Idaho

Licensed Septic Companies in Idaho County, ID

22 septic companies serve Idaho County, Idaho, and 22 of them hold a Idaho septic license or certification matched to the Idaho Public Health Districts / Idaho DEQ list (data as of October 2026).

22 septic companies in Idaho County

Elsewhere in Idaho County 9

  • 2 Rivers Excavation LLC

    1097 Kidder Ridge Rd Kamiah, Id 83536, ID

    • Licensed: Idaho Permitted Septic Standard/Basic Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 935-5339

  • A. Williams & Son, LLC

    Po Box 718 Grangeville, Id 83530, ID

    • Licensed: Idaho Permitted Septic Complex Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 983-6195

  • Aera Excavation LLC

    105 Knoll Ln Grangeville, Id 83530, ID

    • Licensed: Idaho Permitted Septic Complex Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (509) 553-0190

  • Cook & Sons Construction, LLC.

    11 Lamb Ln Grangeville, Id 83530, ID

    • Licensed: Idaho Permitted Septic Complex Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 983-1407

  • Dennis R. Bishop

    1301 Bishop Ln Po Box 313 Kamiah, Id 83536, ID

    • Licensed: Idaho Permitted Septic Standard/Basic Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 935-2828

  • Graham Construction

    2336 Lukes Gulch Rd Stites, Id 83552, ID

    • Licensed: Idaho Permitted Septic Standard/Basic Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 926-7277

  • Hollibaugh Equipment Services LLC

    304 N Junction Grangeville, Id 83530, ID

    • Licensed: Idaho Permitted Septic Standard/Basic Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 816-2510

  • Idaho Excavating

    711 Maple St Grangeville, Id 83530, ID

    • Licensed: Idaho Permitted Septic Complex Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 315-4632

  • Sickels Excavation

    16 Lupine Dr Grangeville, Id 83530, ID

    • Licensed: Idaho Permitted Septic Complex Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 507-1024

Cottonwood 5

  • Arnzen Brothers LLC

    PO Box 119, Cottonwood, ID 83522

    • Licensed: Idaho Permitted Septic Complex Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 791-0633

  • Arnzen Building Construction Inc.

    Po Box447, Cottonwood, ID 83522

    • Licensed: Idaho Permitted Septic Standard/Basic Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 962-3903

  • Mountain Construction Inc.

    PO Box 125, Cottonwood, ID 83522

    • Licensed: Idaho Permitted Septic Complex Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 816-8753

  • Prodigal Services LLC

    PO Box 278, Cottonwood, ID 83522

    • Licensed: Idaho Permitted Septic Complex Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 691-7670

  • Rehder Excavation LLC

    1242 Cottonwood Butte Rd, Cottonwood, ID 83522

    • Licensed: Idaho Permitted Septic Standard/Basic Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 507-1916

Riggins 3

  • Gateway Construction

    PO Box 86, Riggins, ID 83549

    • Licensed: Idaho Permitted Septic Standard/Basic Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 628-9268

  • Kern Construction, Inc.

    105 Rapid River Ct Riggins, Id 83549, Riggins, ID 83549

    • Licensed: Idaho Permitted Septic Complex Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 628-3448

  • Srs Construction

    505 Old Pollock Rd Riggins, Id 83549, Riggins, ID 83549

    • Licensed: Idaho Permitted Septic Complex Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 628-3756

Grangeville 2

  • Eynon Construction InC.

    152 Cash Ln, Grangeville, ID 83530

    • Licensed: Idaho Permitted Septic Complex Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 451-0906

  • Groundwork Excavation

    1207 Lukes Gulch Rd, Grangeville, ID 83530

    • Licensed: Idaho Permitted Septic Standard/Basic Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 507-8054

Kooskia 2

  • J&S Excavating

    PO Box 35, Kooskia, ID 83539

    • Licensed: Idaho Permitted Septic Standard/Basic Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 553-2859

  • TKT Excavation and Trucking

    181 Tinker Creek Lane, Kooskia, ID 83539

    • Licensed: Idaho Permitted Septic Standard/Basic Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 316-2829

White Bird 1

  • Wishful Thinking Ent.

    PO Box 81, White Bird, ID 83554

    • Licensed: Idaho Permitted Septic Standard/Basic Installer (Idaho Public Health Districts / Idaho DEQ, verify)

    Per state license: Installation

    (208) 507-1463

Septic licensing in Idaho

Idaho installers and pumpers hold permits from the public health districts. Idaho Code 9-348 prohibits using the state's lists as a mailing or phone list. The Idaho's seven public health districts, under Idaho DEQ rules issues these credentials: Standard/basic installer registration permit; Complex installer registration permit; Septic pumper permit.

Permits for new systems, replacements and most repairs are issued locally. Ask the contractor which office handles Idaho County and whether the permit fee is in their quote.

Idaho septic licensing: agencies, license types and how to check a license →

Septic companies in Idaho County: common questions

How many licensed septic companies are in Idaho County, ID?

22 septic companies serve Idaho County, Idaho, and 22 of them hold a Idaho septic license or certification matched to the Idaho Public Health Districts / Idaho DEQ list (data as of October 2026). Each license badge on this page names the agency and links to its lookup so you can confirm it.

Who licenses septic contractors in Idaho?

Idaho installers and pumpers hold permits from the public health districts. Idaho Code 9-348 prohibits using the state's lists as a mailing or phone list. The licensing body is the Idaho's seven public health districts, under Idaho DEQ rules.

Which companies install septic systems in Idaho County?

22 listings in Idaho County install septic systems. New systems and replacements need a permit, so ask each installer to handle the permit and to show their Idaho license.

How do I check a septic contractor's license in Idaho?

Use the Idaho's seven public health districts, under Idaho DEQ rules's lookup (https://www.deq.idaho.gov/water-quality/wastewater/septic-and-septage/) and search the contractor's name or license number. Our guide to checking a septic license walks through it.