They are making a few great pointers regarding Detecting hidden plumbing leaks in general in this great article below.

Early discovery of dripping water lines can reduce a possible disaster. Some small water leakages might not be visible.
1. Take A Look At the Water Meter
Every residence has a water meter. Checking it is a guaranteed way that helps you find leakages. For beginners, switch off all the water resources. Make sure no one will certainly flush, make use of the faucet, shower, run the cleaning device or dishwashing machine. From there, most likely to the meter as well as watch if it will certainly change. Given that no one is utilizing it, there should be no motions. That shows a fast-moving leak if it moves. If you discover no changes, wait a hr or 2 and also check back again. This implies you may have a sluggish leakage that can also be below ground.
2. Check Water Usage
If you find abrupt changes, in spite of your intake being the same, it implies that you have leaks in your plumbing system. An unexpected spike in your costs suggests a fast-moving leakage.
A stable rise every month, even with the very same routines, shows you have a sluggish leak that's likewise slowly rising. Call a plumber to thoroughly examine your property, particularly if you really feel a cozy area on your flooring with piping below.
3. Do a Food Coloring Examination
When it comes to water intake, 30% comes from toilets. If the color somehow infiltrates your dish throughout that time without flushing, there's a leak between the storage tank and bowl.
4. Asses Outside Lines
Do not forget to inspect your outside water lines also. Examination spigots by attaching a garden tube. Should water seep out of the connection, you have a loose rubber gasket. Replace this as well as make sure all links are limited. It will help obtain it expertly analyzed and also preserved yearly if you've obtained a lawn sprinkler system. One small leak can waste lots of water and increase your water expense.
5. Check as well as Analyze the Circumstance
Homeowners ought to make it a behavior to check under the sink counters and also even inside cupboards for any kind of bad odor or mold growth. These 2 warnings indicate a leak so punctual attention is needed. Doing regular inspections, even bi-annually, can save you from a significant issue.
If you know your home is already old, keep a watchful eye on your heating units, hose pipes, pipes and so on. Look for discolorations and weakening as most pipelines and also home appliances have a life span. They will also naturally wear away because of tear and use. Do not wait for it to escalate if you presume leaking water lines in your plumbing system. Call an expert plumber right now so you do not end up with a horrible mess in your house.
Early detection of leaking water lines can reduce a prospective calamity. Some tiny water leakages might not be noticeable. Examining it is a proven means that assists you find leaks. One tiny leak can waste tons of water and also increase your water expense.
If you presume leaking water lines in your plumbing system, don't wait for it to escalate.
How to Know If Your Home Has a Hidden Leak
Water Meter Reveals Inexplicable Water Usage
If you’d like to test whether or not there’s a leak somewhere in your home, you can do this using your water meter. Here is how to conduct the test:
Don’t use any water in your home for at least 30 minutes; this also means not turning on faucets or water-using appliances.
Go outside, and check your water meter for activity.
If your water meter shows that there was activity, even though no one was using any water, this proves that there is a leak in your home.Visible Mold or Mildew Growth
Leaks behind walls create moist, dark environments that allow mold and mildew to grow and thrive. Eventually, you might see mold growth forming on the wall closest to a hidden leak.
If mold is growing in an area that receives a high amount of moisture, such as a bathroom, it may simply be an indication that better ventilation is needed. However, if you see mold growth on a wall or the ceiling in an area where you would not expect, you probably have a hidden leak.
Musty, Mildew Odor
Sometimes you might not be able to see the mold or mildew that is growing as a result of a leak. However, the smell can give the problem away just as easily. If you catch a whiff of something musty, there’s a good chance that old water is collecting somewhere in your home that you can’t see.
Stained/Warped Walls, Ceilings, or Floors
When your home soaks up water, a variety of red flags can become visible, including ceiling stains, bubbling drywall, warped walls, and sagging floors. While these issues can be caused by excess humidity, they can also be signs that a pipe or plumbing connection has started leaking behind your walls.
Inexplicably High Water Bill
After a while, you get a general sense for what your water bill should be. If you own a pool or sprinkler system, your bill will tend to be higher during summer. However, if you receive a water bill that seems especially high, and you can’t figure out what caused it, then you may have a hidden leak somewhere that’s increasing your bill.
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