Plumbing & Leak Detection Guides
Practical answers to the plumbing questions McLean homeowners ask most, checked against official sources.
These guides explain plumbing problems in plain words: how to spot them, what to do first and when to call a pro. Each one links to the matching service, such as leak detection in McLean, and lists the sources we checked. For quick definitions, see our plumbing glossary. For repairs, start at our McLean plumber home page.
Leaks & Detection
Leaks & DetectionWhat Is a Slab Leak?
How to tell if a pipe is leaking under your concrete floor, and what fixing it involves.
Leaks & DetectionWater Leak in Ceiling
Plumber, roofer or HVAC tech? How to tell where ceiling water is coming from and what to do first.
Leaks & DetectionPinhole Leaks in Copper
Why copper pipes develop pinholes, how to spot them early and when to repair or repipe.
Leaks & DetectionFind a Pool Leak
Run the bucket test, narrow down the leak with the pump on and off, and know when to call a pro.
Water & Sewer Lines
Water & Sewer LinesWater Meter Leak Test
Use your meter's leak indicator to confirm a leak and narrow down where it is.
Water & Sewer LinesWho Owns the Water Line?
What Fairfax Water owns, what the homeowner owns and who to call for a leak on each side.
Water & Sewer LinesSewer Camera Inspection Cost
What a sewer scope shows, what moves the price and when buyers should ask for one.
Seasonal & Emergencies
Water Heaters & Fixtures
Costs & Insurance
Rather talk to a plumber? Call us any time.
Call McLean Plumber Works any time, day or night. A plumber picks up and talks you through next steps.




