In this article down the page you might get a bunch of really good resources involving Detecting hidden plumbing leaks.

The moment you discover a leak, calling your plumber for repair work is the best solution. Some tiny water leakages may not be visible. If you can not spot it with your naked eyes, below are some hacks that assist.
Early detection of leaking water lines can reduce a prospective calamity. Apart from conserving you cash, it will decrease the aggravation and also frustration.
Examine Water Intake
If you identify sudden modifications, despite your usage being the same, it means that you have leaks in your plumbing system. A sudden spike in your bill shows a fast-moving leakage.
At the same time, a constant boost monthly, even with the very same routines, shows you have a slow-moving leakage that's also gradually intensifying. Call a plumber to completely check your property, particularly if you really feel a warm area on your flooring with piping below.
Examine as well as Assess the Situation
Property owners must make it a behavior to check under the sink counters and even inside cabinets for any bad odor or mold growth. These two red flags indicate a leak so prompt attention is called for. Doing regular examinations, also bi-annually, can conserve you from a significant issue.
Analyze the Water Meter
Examining it is a guaranteed way that aids you uncover leaks. If it relocates, that shows a fast-moving leak. This means you might have a slow-moving leak that can even be below ground.
Asses Outside Lines
Don't neglect to examine your outdoor water lines as well. Test faucets by connecting a garden hose. Should water permeate out of the link, you have a loose rubber gasket. Change this and also make sure all connections are limited. It will assist obtain it skillfully examined as well as kept yearly if you have actually obtained a sprinkler system. One small leakage can waste tons of water and also spike your water bill.
Do a Food Coloring Examination
When it comes to water consumption, 30% comes from toilets. Examination to see if they are running effectively. Decline flecks of food color in the tank and wait 10 mins. If the shade somehow infiltrates your bowl throughout that time without flushing, there's a leak between the container as well as bowl.
If you recognize your home is already old, maintain a watchful eye on your heating units, hoses, pipelines etc. Check for stainings as well as damaging as most pipelines as well as home appliances have a life expectancy. They will certainly likewise normally wear away due to deterioration. If you presume dripping water lines in your plumbing system, do not await it to intensify. Call a specialist plumber right now so you do not wind up with a horrible mess in your home.
The moment you find a leak, calling your plumber for repair work is the ideal option. Some small water leakages may not be noticeable. Inspecting it is a surefire method that helps you uncover leaks. One small leakage can squander tons of water as well as increase your water expense.
If you presume leaking water lines in your plumbing system, don't wait for it to rise.
WARNING SIGNS OF WATER LEAKAGE BEHIND THE WALL
PERSISTENT MUSTY ODORS
As water slowly drips from a leaky pipe inside the wall, flooring and sheetrock stay damp and develop an odor similar to wet cardboard. It generates a musty smell that can help you find hidden leaks.
MOLD IN UNUSUAL AREAS
Mold usually grows in wet areas like kitchens, baths and laundry rooms. If you spot the stuff on walls or baseboards in other rooms of the house, it’s a good indicator of undetected water leaks.
STAINS THAT GROW
When mold thrives around a leaky pipe, it sometimes takes hold on the inside surface of the affected wall. A growing stain on otherwise clean sheetrock is often your sign of a hidden plumbing problem.
PEELING OR BUBBLING WALLPAPER / PAINT
This clue is easy to miss in rooms that don’t get much use. When you see wallpaper separating along seams or paint bubbling or flaking off the wall, blame sheetrock that stays wet because of an undetected leak.
BUCKLED CEILINGS AND STAINED FLOORS
If ceilings or floors in bathrooms, kitchens or laundry areas develop structural problems, don’t rule out constant damp inside the walls. Wet sheetrock can affect adjacent framing, flooring and ceilings.
https://www.servicemasterbyzaba.com/blog/how-to-detect-water-leakage-in-walls/

As an enthusiastic person who reads on Hacks to detect leaks, I figured sharing that information was worth the trouble. Enjoyed reading our article? Please share it. Let somebody else find it. We love reading our article about Detecting hidden plumbing leaks.