GroundRoster

Digger DJ, Inc.Licensed

Licensed septic contractor based in Duluth, St. Louis County, MN

License details

CompanyDarrel D Johnson
License numberL1613
License typeSSTS Installer · Designer · Inspector · Pipelayer
License statusCurrent
License expiresApril 9, 2029
Based inDuluth, St. Louis County, Minnesota 55803

"Based in" is the city and county of the address on the business's license record.

What this license covers

  • Design: licensed to size and lay out a septic system for a specific site and soil condition.
  • Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.
  • Inspection: licensed to inspect existing septic systems; the license you want for a home-purchase inspection.
  • Pipelaying: licensed to install the sewer line running from the building to the septic tank.

How to verify this license

We publish the license details exactly as they appear in the public licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #L1613 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: Minnesota Pollution Control Agency (MPCA) - SSTS licensed business list, last checked 2026-10-03. Look it up at the issuing agency.

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