GroundRoster

Mark A MachnikLicensed

Licensed septic contractor based in Old Lyme, Lower Connecticut River Valley Planning Region, CT

License details

License number33.003283
License typeSub-Surface Sewage Installer
License statusActive
License expiresMarch 31, 2027
Based inOld Lyme, Lower Connecticut River Valley Planning Region, Connecticut 06371

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

What this license covers

  • Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.

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 #33.003283 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: Connecticut DPH - eLicense credential extract (well & septic license types), last checked 2026-10-17. Look it up at the issuing agency.

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