Leak Detection & Repair — Lothian, MD
A Lothian homeowner noticed their water bill had doubled over two months with no change in usage. We used acoustic leak detection equipment to locate a pressurized leak in a supply line running under the slab — without breaking concrete until we knew exactly where to dig.
The Problem
A Lothian homeowner contacted us after receiving two consecutive water bills that were nearly double their normal amount. They had checked all visible fixtures and found no leaks. The water meter was spinning slowly even when all fixtures were off — confirming an active leak somewhere in the system.
Our Diagnosis
We performed a pressure test on the supply system. Pressure dropped steadily with all fixtures off, confirming a pressurized leak. Using acoustic leak detection equipment, we traced the leak to a supply line running under the concrete slab in the utility room — approximately 8 feet from the water heater. The leak was not visible from above.
The Repair Process
- 1Pressure test confirmed active pressurized leak in supply system
- 2Acoustic leak detection equipment located leak under slab — 8 feet from water heater
- 3Marked exact location on slab surface
- 4Core drilled 6-inch access hole at marked location
- 5Confirmed leak location — pinhole in copper supply line
- 6Repaired copper line and pressure tested repair
- 7Patched concrete access hole
- 8Final pressure test confirmed no remaining leaks
The Outcome
Leak located and repaired without unnecessary concrete demolition. Water bill returned to normal the following month. Homeowner reported saving approximately the cost of the repair in water costs.
Key Takeaway
A water bill that suddenly doubles with no change in usage almost always indicates a pressurized leak somewhere in the system. Acoustic leak detection allows us to locate the leak precisely before breaking concrete — minimizing damage and repair cost.
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George Baker III
Annapolis, MD
May 2026
"We recently had Deep Dive Plumbing Maryland out to our home in Annapolis after we suddenly started noticing sewer flies throughout the house. They truly lived up to their name and performed a full "deep dive" diagnostic inspection instead of just treating the symptom. During their inspection they discovered our sewer pipe connected to the toilet had been leaking into the basement for quite some time. The team explained everything clearly, provided upfront pricing before starting any work, and even gave us a military discount which was greatly appreciated. They were professional, respectful, extremely knowledgeable, and took the time to make sure the repair was done correctly."
Angelis Reilly
Southern Maryland
June 2026
"TJ was great!! He answered our emergency call late evening hours. He was honest and gave us options to make a decision. Highly recommend!!"
Sally Ludwig
Dunkirk, MD
June 2026
"Great service with knowledgeable and neat professionals. Highly recommend! Deep Dive Plumbing helped with my bathroom project, including reinstalling a pedestal sink after new flooring was installed and addressing a toilet issue that had been causing constant clogs. The team was professional, courteous, and took the time to make sure everything was completed correctly. Their attention to detail and cleanliness really stood out. I am very happy with the results and would not hesitate to call them again."
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