GroundRoster

John HeddenLicensed

Licensed septic contractor based in Nantucket, Nantucket County, MA

License details

License number14536
License typeSoil Evaluator, Title 5 System Inspector
License statusActive, MassDEP Title 5 System Inspectors list · Active, MassDEP Soil Evaluators list
License expiresJune 30, 2029
Based inNantucket, Nantucket County, Massachusetts

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

What this license covers

  • Site testing: licensed to run percolation tests and evaluate soils to determine what kind of system a site can support.
  • Inspection: licensed to inspect existing septic systems; the license you want for a home-purchase inspection.

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 #14536 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: MassDEP Title 5 - System Inspectors · MassDEP - Soil Evaluators, last checked 2026-08-17. Look it up at the issuing agency.

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