Water lines & fixtures
To check for a hidden leak, turn off every faucet and appliance and watch your water meter for fifteen minutes. If it moves, water is escaping somewhere. A leak detection contractor uses acoustic listening, thermal imaging and pressure tests to pinpoint it before opening a wall or floor.
Signs of a hidden leak
- A water bill noticeably higher than the same period last year
- Stains, bubbling paint or soft drywall
- A warm spot on the floor (a hot water line under a slab)
- Musty smell or mold in one area
- Water pressure that has dropped
- A wet patch in the yard between the meter and the house
High water bill in Baltimore?
Baltimore City DPW bills water for the city and much of Baltimore County. If your bill suddenly rises, check the meter test above before disputing it: a running toilet flapper can waste a large amount of water and is one of the most common causes. If the meter moves with everything off and you can't find a running fixture, call for leak detection.
Service line leaks
The pipe from the meter to your house is usually the owner's responsibility. Older homes may still have galvanized, or in some cases lead, service lines. If a leak is found there, ask the contractor about replacing the line rather than patching it.
How to get leak detection in Baltimore
- Call 443-863-5471. Tell us what's happening and where you are. Calls are answered 24/7.
- We connect you. You're put through to a licensed, independent local plumber who handles this kind of job in your area.
- Get a clear quote. The plumber explains the problem and the price before any work starts.
- You decide. Approve the work, and the plumber completes it with any permit your city or county requires.
Plumbers in Baltimore Today is a free referral service; we don't perform plumbing work ourselves. How it works.
Frequently asked questions
Can a toilet really raise my water bill that much?
Yes. A flapper that doesn't seal lets water run continuously into the bowl. Put a few drops of food coloring in the tank; if color appears in the bowl without flushing, the flapper is leaking.
Will leak detection damage my walls?
The point of leak detection is to find the exact spot first, so only a small, targeted opening is needed for the repair.
