Licensed Septic Companies in Delaware
The Septic Guide lists 86 septic companies and licensed septic professionals in Delaware; 84 are matched to the Delaware Department of Natural Resources and Environmental Control license or certification lists (data as of October 2026).
Septic companies by county
Septic companies by city
Licensed company profiles in Delaware
Septic services in Delaware
Counts of Delaware listings by service, from each business's own website or the type of state license it holds.
Who licenses septic work in Delaware?
Delaware publishes its Class E septic contractor roster as public-domain open data, including company phone and email.
Credentials: Class E system contractor/installer license.
Agency: Delaware DNREC.
Licenses shown in this directory come from: Delaware Department of Natural Resources and Environmental Control (112).
Other Delaware listings
Septic companies and licensed professionals in areas without their own page yet. Listings in the counties and towns above are on those pages.
Location not listed 9
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ASAP Pumping Service
DE
- Licensed: Delaware DNREC Licensed On-Site Sewage System Contractor (Class E) · #5201E3 (Delaware Department of Natural Resources and Environmental Control, verify)
Per state license: Installation
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B.L. Phippin and Son Construction
DE
- Licensed: Delaware DNREC Licensed On-Site Sewage System Contractor (Class E) · #6184E1 (Delaware Department of Natural Resources and Environmental Control, verify)
Per state license: Installation
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Bobcat Septic Services LLC
DE
- Licensed: Delaware DNREC Licensed On-Site Sewage System Contractor (Class E) · #4591E3 (Delaware Department of Natural Resources and Environmental Control, verify)
Per state license: Installation
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Bunker Hill Services Inc
DE
- Licensed: Delaware DNREC Licensed On-Site Sewage System Contractor (Class E) · #5525E3 (Delaware Department of Natural Resources and Environmental Control, verify)
Per state license: Installation
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C M Kristman Excavating
DE
- Licensed: Delaware DNREC Licensed On-Site Sewage System Contractor (Class E) · #5619E3 (Delaware Department of Natural Resources and Environmental Control, verify)
- Licensed: Delaware DNREC Licensed On-Site Sewage System Contractor (Class E) · #2444E3 (Delaware Department of Natural Resources and Environmental Control, verify)
Per state license: Installation
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Lecco
DE
- Licensed: Delaware DNREC Licensed On-Site Sewage System Contractor (Class E) · #4079E4 (Delaware Department of Natural Resources and Environmental Control, verify)
Per state license: Installation
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Pierson Environmental Services LLC
DE
- Licensed: Delaware DNREC Licensed On-Site Sewage System Contractor (Class E) · #2267E3 (Delaware Department of Natural Resources and Environmental Control, verify)
Per state license: Installation
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Quantum Environmental Enterprise
DE
- Licensed: Delaware DNREC Licensed On-Site Sewage System Contractor (Class E) · #5509E3 (Delaware Department of Natural Resources and Environmental Control, verify)
Per state license: Installation
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Roto-Rooter Sewer & Drain Service
DE
- Licensed: Delaware DNREC Licensed On-Site Sewage System Contractor (Class E) · #4632E3 (Delaware Department of Natural Resources and Environmental Control, verify)
Per state license: Installation
No listings match those filters.
Septic companies in Delaware: common questions
How many licensed septic companies are in Delaware?
The Septic Guide lists 86 septic companies and licensed septic professionals in Delaware; 84 are matched to the Delaware Department of Natural Resources and Environmental Control license or certification lists (data as of October 2026).
Do septic contractors need a license in Delaware?
Yes. Delaware publishes its Class E septic contractor roster as public-domain open data, including company phone and email.
How do I check a septic license in Delaware?
Search the contractor on the Delaware DNREC's lookup (https://data.delaware.gov/resource/376h-4rq3). Every license badge in this directory links to the agency's own lookup.