High Water Bill in Plano, TX? How to Tell If You Have a Hidden Water Leak

Written by Steven Shipler, Texas Licensed Master Plumber and Responsible Master Plumber (RMP), Texas License #45825.

A suddenly high water bill in Plano, Texas can be frustrating because the problem is not always obvious. You may walk through the entire house and see no dripping faucet, no water on the floor, and no broken pipe — yet the water meter keeps showing usage.

That is when a hidden water leak becomes a real possibility.

The leak may be underneath the concrete slab, between the water meter and the house, underneath landscaping, inside a wall, near an irrigation connection, or somewhere else in the pressurized water system.

Does a High Water Bill Mean You Have a Leak?

It can.

But increased water consumption can also come from irrigation, filling a swimming pool, additional household use, a running toilet, a dripping fixture, an automatic pool filler, or another appliance using water.

The important clue is whether water continues moving through your meter when you believe everything using water has been shut off.

The City of Plano currently provides utility customers with online tools to review their water use and specifically addresses high consumption and leaks through its Customer & Utility Services system.

Step 1: Check Your Plano Water Meter

One of the simplest homeowner tests is also one of the most useful.

1. Turn off faucets throughout the house.
2. Make sure nobody is showering or using sinks.
3. Do not run the washing machine or dishwasher.
4. Turn off irrigation temporarily.
5. Make sure toilets are not actively filling.
6. Check whether the pool autofill is running.
7. Locate your water meter.
8. Record the meter reading or photograph it.
9. Wait without intentionally using water.
10. Check the meter again.

If the meter continues registering water use when everything should be off, there is a strong reason to investigate further.

10 Signs Your High Water Bill Could Be a Hidden Leak

• The water meter moves when everything is turned off.
• Your water bill suddenly increases without a change in normal usage.
• You hear water running when no fixture is operating.
• A section of flooring feels unusually warm.
• Flooring, baseboards, or walls become damp.
• You notice unexplained moisture near the foundation.
• One area of the yard stays unusually wet.
• You notice reduced water pressure.
• The water heater appears to run more frequently than normal.
• You repeatedly add water to a pool without an obvious explanation.

Professional leak detection helps narrow the repair area before unnecessary excavation or concrete cutting.

Common Causes of a High Water Bill in Plano

1. Running Toilet

A toilet can quietly leak water from the tank into the bowl for hours or days without creating water on the floor. A worn flapper, fill valve, or other internal component can create continuous consumption.

2. Irrigation System Leak

Sprinkler systems can leak underground. Because the water disappears into soil, the homeowner may not immediately realize how much water is being lost.

3. Underground Water Service Leak

The water service line running from the meter toward the house can develop a leak underground.

The yard may become wet, but not always. Soil conditions can allow water to travel underground before becoming visible.

4. Slab Leak

A pressurized hot or cold water line underneath the concrete foundation can develop a leak.

Depending on where the pipe fails, you may notice a warm floor, water near baseboards, sounds of running water, meter movement, or simply a high bill.

5. Pool Autofill or Pool Plumbing

An automatic pool filler can hide pool water loss because it continuously replaces escaping water.

The homeowner may notice the problem first on the monthly water bill instead of by seeing the pool level drop.

6. Exterior Hose Bib or Plumbing Leak

Outdoor fixtures, hose connections, valves, and buried piping can leak without causing visible damage inside the house.

7. Water Softener or Plumbing Equipment

Water treatment equipment and other water-using systems can occasionally malfunction or cycle more than expected.

Could Your High Water Bill Be a Slab Leak?

Yes, but a high bill by itself is not enough evidence to start cutting concrete.

A slab leak is a leak in a water line located beneath or within the concrete foundation.

Water can move underneath the slab and appear several feet away from the actual pipe failure.

Hot Water Slab Leak vs. Cold Water Slab Leak

A hot-water line leak may sometimes create a warm area on the floor because heated water is escaping beneath the slab.

A cold-water leak may be harder to notice from temperature alone.

Either one can increase the water bill because the water meter measures water entering the property regardless of where the pipe eventually loses it.

How We Narrow Down a Hidden Water Leak

Professional leak detection works best as a process of elimination.

Leak Detection Equipment Used to Find Hidden Water Leaks

There is no single tool that finds every leak. The equipment has to match the type of pipe, surface, leak, and property conditions.

1. Professional Ground Microphone / Geophone System

A ground sensor or geophone listens for sound produced by pressurized water escaping from a pipe beneath concrete, tile, pavement, or another surface.

2. General Wire Gen-Ear LE Water Leak Location System

The General Wire Gen-Ear LE is designed for acoustic water leak location. Its ground sensor and amplified listening system can be used to help pinpoint leaks in residential and commercial water lines, including piping beneath concrete slabs.

3. Pressure Gauges and System Isolation Equipment

Pressure testing and isolation help determine whether a section of plumbing is actually losing pressure before acoustic locating begins.

This is important because listening in the wrong area or on the wrong plumbing circuit wastes time and can lead to bad conclusions.

Why the Master Plumber Report Matters

Hidden water leaks can lead to expensive repair decisions.

You may be considering cutting flooring, opening concrete, tunneling beneath a foundation, excavating the yard, rerouting a water line, or replacing part of the plumbing system.

Before making that decision, you should understand what evidence led to the recommended repair.

• What system was tested?
• Did the system lose pressure?
• Was the suspected line isolated?
• Where does the line appear to travel?
• Where was the strongest leak evidence detected?
• What area should the repair contractor investigate first?

How Much Does Leak Location Cost in Plano, Texas?

Leak locating prices can vary widely depending on the type of leak and the amount of diagnostic work required.

Do Not Start Breaking Concrete Just Because the Water Bill Is High

A high water bill tells you water use increased.

It does not tell you where the water went.

The leak could be:

• Under the slab
• In the front yard
• At the irrigation system
• At a toilet
• At a hose bib
• At the pool
• At the pool autofill
• Inside a wall
• At an appliance
• Between the meter and the home

Diagnose first.

Then repair.

Hidden Water Leaks in Plano, Allen, and Frisco

We perform this type of diagnostic work throughout Plano and the surrounding North Dallas area.

A homeowner in Plano may first notice a high utility bill or unexplained meter movement.

A homeowner in Allen may notice moisture near the foundation or an unusually wet section of the yard.

A homeowner in Frisco may see the same symptoms even though no water is visible inside the home.

The city changes, but the diagnostic principle does not:

Confirm the water loss, isolate the system, and locate the problem before unnecessary demolition.

Leak Detection Service Area: Plano, Texas

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Frequently Asked Questions About High Water Bills and Hidden Leaks