GroundRosterSeptic System Installation: Licensed Septic Installers Based in Williston, ND
34 of the 34 licensed listings based in Williston hold a North Dakota license class that covers this work: they are licensed to build and install septic tanks and drainfields, and repair or replace failed ones. Not every well and septic professional is; see all Williston listings for the full roster.
"Based in" is the city on the business's state license record. That can be a mailing address; it doesn't tell you where the business works.
Lakeside Builders United, LLCLicensed
Stateline ServicesLicensed
WBP ContractingLicensed
Alpha Septic and Sewer IncLicensed
JTI IncLicensed
Coreys Septic ServiceLicensed
Cody Echevarria Construction LLCLicensed
JMAC ResourcesLicensed
Advent PlumbingLicensed
All Source PlumbingLicensed
Joe's Digging Service, Inc.Licensed
BG ExcavationLicensed
Scully Design Build, IncLicensed
Braaten PlumbingLicensed
Agri Industries, Inc.Licensed
KDW ConstructionLicensed
Triple I ContractingLicensed
Peter & Sons Excavation LLCLicensed
Above the Level Plumbing LLCLicensed
Enywhey Services LLCLicensed
Land Restoration SpecialistsLicensed
Prairie Winds Services, LLCLicensed
W-5 Excavation, Inc.Licensed
Straight Shot EnterpriseLicensed
Black's Well ServiceLicensed
Goebel ConstructionLicensed
High Plains Excavating LLCLicensed
High Plains Excavating LLCLicensed
Folden GradingLicensed
Kent's Plumbing and Heating LLCLicensed
TERAflex Group, LLCLicensed
Clark and Sons EarthworksLicensed
Black Diamond SolutionsLicensed
What does septic system installation cost?
A conventional septic system typically costs $3,600 to $12,500 installed. Alternative systems (aerobic, mound) for difficult sites run $10,000 to $20,000. Soil conditions drive most of the difference, which is why a soil or percolation test comes first.
Do I need a permit to install or replace a septic system?
Almost always. Your state or county health authority must permit new systems and most repairs, and the design has to match a soil evaluation of your site. Licensed installers usually handle permitting as part of the job; confirm it is included in the quote.
Before you hire
Confirm the license number on this page is still active with North Dakota, ask for proof of insurance, and get at least three written quotes; pricing on this work varies widely by site conditions.