Johnson's Sewer & Drain Contractors, Inc. T/A Roto-Rooter of Delmarva
8919 Double Hills Rd · Denton, MD 21629 · (888) 337-7686
Certified in water damage restoration; no mold credential on record.
8919 Double Hills Rd, Denton, MD 21629 — the address on the credential record we verified, not a marketing address.
Verified credentials
| IICRC Certified Firm | Listed as a Certified Firm in the IICRC Global Locator, with 2 active certifications on record. Check it yourself: search this firm's name and city in the IICRC Global Locator. The Locator does not publish record numbers, so there is no ID to look up — the name-and-city search is the verification route. Source: IICRC Global Locator · checked August 14, 2026 · our internal reference 227132 |
|---|---|
| Phone | (888) 337-7686 Source: IICRC registry |
| Website | www.rotorooter-delmarva.com |
What these certifications mean
| Certification | What it covers |
|---|---|
| ASD Applied Structural Drying Technician | Advanced structural drying — in-place drying of walls, floors and assemblies using controlled airflow and dehumidification. |
| WRT Water Damage Restoration Technician | Trained in the science of water losses: extraction, moisture assessment and drying of structures per the IICRC S500 standard. |
Certifications are verified against IICRC's registry. They describe training held — services actually offered may differ; confirm scope directly with the firm.
Roto-Rooter of Delmarva. Licensed plumbing, sewer and drain, septic, water jetting, hydro excavation and video inspection, plus water cleanup — drying, cleaning, disinfecting, deodorizing and rebuilding. In business: "50 Years Strong", stated alongside "Operated as an Independent Franchise" of Roto-Rooter — page does not make clear whether the figure is this operator or the brand (claimed). Service area (claimed): "All of Delmarva" — Delaware, Maryland and Virginia; no cities or counties enumerated
Before you hire — three checks
- Confirm the credential is current. Ask for the IICRC certification and confirm it at IICRC's locator.
- Get the scope in writing — containment, what's being removed, and post-work verification.
- For mold: keep assessment and remediation separate. An independent assessor writes the protocol; the remediator executes it. Even where not legally required, it protects you.
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Claim this profileQuestions about Johnson's Sewer & Drain Contractors, Inc. T/A Roto-Rooter of Delmarva’s credentials
Is Johnson's Sewer & Drain Contractors, Inc. T/A Roto-Rooter of Delmarva IICRC certified?
Yes. Johnson's Sewer & Drain Contractors, Inc. T/A Roto-Rooter of Delmarva appears in IICRC's Certified Firm registry holding 2 certifications: ASD (Applied Structural Drying Technician) and WRT (Water Damage Restoration Technician). We check this against IICRC's own registry rather than the firm's marketing; last checked August 14, 2026.
What is Johnson's Sewer & Drain Contractors, Inc. T/A Roto-Rooter of Delmarva certified to do?
Certified in water damage restoration; no mold credential on record. Certifications describe verified training, not the services a firm chooses to offer — what it advertises is its own claim, and we label self-reported information as self-reported.
Is Johnson's Sewer & Drain Contractors, Inc. T/A Roto-Rooter of Delmarva a Roto-Rooter franchise?
This location is branded Roto-Rooter. Franchise locations are independently owned and separately credentialled — the certifications shown here belong to this location, not to the national brand, and another Roto-Rooter location may hold an entirely different set.
Where does this information come from, and when was it checked?
Credentials on this page were checked against the body that issued them — IICRC — on August 14, 2026. We publish no reviews, no ratings and no prices, and payment never affects whether a firm appears here or where it sits in a list.
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