By the All Systems Pros service team · Updated July 20, 2026
The signs worth taking seriously
Any one of these deserves attention; two or more deserve a call:
- A water bill that jumps with no change in habits
- The sound of running water when every fixture is off
- A warm spot on the floor (a hot-side slab leak)
- Musty odors, or paint/flooring that's discoloring or lifting
- A water meter that spins with everything shut off
- Low or fluctuating water pressure
The ten-minute meter test
Turn off every fixture and appliance that uses water. Find your water meter and note the reading (or watch the small leak-indicator dial). Wait ten minutes without using any water, then check again. Movement means water is going somewhere it shouldn't — the question becomes where, and that's where professional detection earns its keep.
How detection works without demolition
Electronic acoustic equipment, pressure testing, and camera inspection locate the leak precisely before any wall or slab is opened — so the repair is a targeted opening, not exploratory demolition. From there you get an honest read: a spot repair for a one-off failure, or a repiping conversation if recurring pinhole leaks show the pipe material itself is at the end of its life.
Why speed matters
Water damage compounds daily — flooring, framing, and mold remediation quickly dwarf the plumbing bill. All Systems Pros answers 24/7 across the San Gabriel Valley, and our customers' own reviews describe no-charge leak checks and honest verdicts when the news was good. Turn the worry into an answer.
About the author
Written and reviewed by the All Systems Pros service team — licensed plumbers holding Rheem ProPartner, A. O. Smith, and Raypak factory certifications, with 30+ years of combined service experience, based in Monrovia, CA.
