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Last updated: April 2026
MC

Magnolia Companies

Washington, DC
↑positive95%
Request Quote (301) 304-7064 Visit Website

Magnolia Companies provides plumbing, HVAC, drain and sewer, and septic tank services for residential and commercial properties in the Washington and Baltimore metropolitan areas. The business began as a small partnership in 1950 and operates as a fourth-generation family-owned company.

septic tank pumping and cleaningseptic tank servicesliquid waste pumping servicessewer and drain cleaningvideo pipeline inspectioncommercial plumbing services
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Credentials & Experience

Years of Experience
76+
Certifications
  • Backflow certified
  • WARDFlex certified
  • Air Bound certified
  • DC Plumbing and Gasfitting Contractor #PC 1000672
  • DC HVAC/Mechanical Contractor #RC902837
  • Maryland State Plumbing and Gasfitting Contractor #87827
  • Maryland HVAC/Mechanical Contractor #93495
  • Virginia Class A License #2705 132517A

Coverage Area

Washington and Baltimore Metropolitan areas

Additional Details

Years of Experience
76 years
Video/Camera Inspection Capable
Yes

Review Sentiment

↑positive95%

Magnolia Companies receives uniformly positive reviews praising exceptional professionalism, efficiency, honesty, and competitive pricing across HVAC and plumbing services.

professionalefficienthonestknowledgeablethoroughreliablecompetitive pricing

Review Highlights

"Magnolia Plumbing will always be my 1st choice."

"I couldn't have asked for anything more."

"incredibly professional and clean while working"

"pricing is very competitive"

Location

600 Gallatin Street NE, Washington, DC 20017

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Septic system inspector Resources

The Complete Guide to Septic System Inspectors

A real septic system inspector opens the tank, measures sludge, and tests flow for 2–4 hours — not a 10-minute eyeball. Know what to demand before closing.

What to Expect When You Hire a Septic System Inspector (Step by Step)

Hiring a septic system inspector takes 2–4 hours across five phases — here's exactly what happens at each step so you know what you're paying for.

How to Prepare for a Septic System Inspector Session (Homeowners And Real-Estate Professional's Checklist)

A buried tank lid and missing records delayed one seller's closing by 3 weeks. Run through this checklist before your septic system inspector arrives.

Looking for more? Browse our full resource library or find septic system inspectors in other cities.

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