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Alvin E MastLicensed

Licensed septic contractor based in Greenwood, Sussex County, DE

License number2424E3
License typeClass E (System Contractor)
License statusApproved
Based inGreenwood, Sussex County, Delaware 19950

"Based in" is the city and county of the address on the business's license record. That can be a mailing address; it doesn't tell you where the business works.

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We publish the license details exactly as they appear in the official licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #2424E3 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: Delaware DNREC - licensed on-site wastewater treatment and disposal system licensees, last checked 2026-08-16. Verify at the official source.

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