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Cass County, North Dakota

Licensed Septic Companies in Cass County, ND

26 septic companies serve Cass County, North Dakota, and 26 of them hold a North Dakota septic license or certification matched to the North Dakota Department of Environmental Quality / local health districts list (data as of October 2026).

Septic services in Cass County

Guides: Septic system installation · Septic repair · Drain field repair · Installation cost · Pumping cost

26 septic companies in Cass County

Fargo 8

  • Diesel Dogs Trucking LLC

    PO Box 585, Fargo, ND 58107

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 235-0181 dieseldogs.net

  • Dirt Dynamics

    4206 3rd Ave N, Fargo, ND 58102

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    From their website: Repair Per state license: Installation

    (701) 793-3055 dirtdynamicsllc.com

  • Dirtworx Excavating, LLC

    725 17th St. N, Fargo, ND 58102

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 809-2702

  • ICD Builders, Inc.

    PO Box 808, Fargo, ND 58107

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (218) 329-7210

  • Johnson & Schock Excavating LLC

    4080 98th Ave S, Fargo, ND 58104

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 282-3659 johnsonandschock.com

  • KPH Inc/Kindred Plumbing Heating

    9530 39th St S, Fargo, ND 58104

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 361-3412 kphinc.net

  • Northern Improvement

    PO Box 2846, Fargo, ND 58108

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 277-1225

  • Siteworx Excavation & Development Co., LLC

    4150 19th Ave S Ste. 201, Fargo, ND 58103

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 425-1874

Horace 4

  • Glacier Enterprises

    9605 81st ST South, Horace, ND 58047

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 261-4769

  • Heartland Excavating LLC

    4343 167th Ave SE, Horace, ND 58047

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 969-5410

  • Heartland Excavation

    709 4th St E, Horace, ND 58047

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 969-5413

  • Heartland Excavation

    Horace, ND

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 356-5325

West Fargo 4

  • Bottom Line Excavating

    301 7 St NW #1A, West Fargo, ND 58078

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 371-7918

  • Earthwork Services Inc

    345 12th Ave NE, West Fargo, ND 58078

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    From their website: Drain field Per state license: Installation

    (701) 282-8551 esi-nd.com

  • Great Plains Siteworks, Inc.

    1193 Main Ave. E, West Fargo, ND 58078

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 491-0470

  • Siteworks Unlimited Inc.

    3410 Co Rd 17 N, West Fargo, ND 58078

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 205-5896 siteworksunlimited.com

Arthur 3

  • Lako Drilling, Inc

    325 County Rd 34, Arthur, ND 58006

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 967-8333 lakodrilling.com

  • Lako Excavating, Paul Lako LLC

    15855 20th St SE, Arthur, ND 58006

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 212-7723

  • Lako Excavating, Paul Lako LLC

    Arthur, ND

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 967-8370

Harwood 2

  • Dig Em Inc.

    16896 Carolyn Dr, Harwood, ND 58042

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    From their website: Installation

    (701) 318-1919 digemnd.com

  • Lindemann Concrete Construction

    PO Box 163, Harwood, ND 58042

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 282-7071

Amenia 1

  • Bruesch Construction

    15013 29th St SE, Amenia, ND 58004

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 347-5399

Casselton 1

  • Jerry's Excavating

    101 15th Ave N PO Box 809, Casselton, ND 58012

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 347-4368

Grandin 1

  • Top Gun Plumbing

    16042 15th St SE, Grandin, ND 58038

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 541-1691

Hunter 1

  • Steve Petersen Construction

    315 1st St E, Hunter, ND 58048

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 874-2398

Leonard 1

  • Andy's Excavating

    15307 52 1/2 St SE, Leonard, ND 58052

    • Licensed: North Dakota Licensed Septic Installer (North Dakota Department of Environmental Quality / local health districts, verify)

    Per state license: Installation

    (701) 645-2547

Septic licensing in North Dakota

North Dakota began licensing septic installers statewide under 2025 legislation (SB 2267); local public health units administer the program. The North Dakota DEQ and local public health units issues these credentials: Annual septic installer license.

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

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

Septic companies in Cass County: common questions

How many licensed septic companies are in Cass County, ND?

26 septic companies serve Cass County, North Dakota, and 26 of them hold a North Dakota septic license or certification matched to the North Dakota Department of Environmental Quality / local health districts 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 North Dakota?

North Dakota began licensing septic installers statewide under 2025 legislation (SB 2267); local public health units administer the program. The licensing body is the North Dakota DEQ and local public health units.

Which companies install septic systems in Cass County?

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

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

Use the North Dakota DEQ and local public health units's lookup (https://deq.nd.gov/WQ/) and search the contractor's name or license number. Our guide to checking a septic license walks through it.