24/7 Emergency Line Open
Denton, TX plumbing, open 24/7Emergency Plumber in Denton, TX
A supply line splits at 2 a.m. A water heater empties into the garage. A toilet backs up an hour before guests arrive. Call any hour and a licensed plumber is sent to your Denton address, with the price explained before the work begins.

A Denton plumber for the problems this city actually has
Denton Apex Plumbing is a 24/7 emergency plumber for Denton, TX and the Denton County towns around it. The work covers leaks, clogs, water heaters, sewer lines and gas lines in houses, rentals and small commercial buildings. That runs from the older blocks near the Courthouse-on-the-Square to newer streets off Loop 288.
Calls tend to land in two groups. Some are plain emergencies: water through a ceiling, sewage in a tub, no hot water on a January morning. Others start as a question, like why the water bill climbed when nobody changed their habits. Both get the same first step. Find the cause, then talk about the fix.
Hot water trouble is the most common reason people call. If the tank is cold, noisy or wet at the base, start with water heater repair in Denton. When water is going somewhere you cannot see, our leak detection service explains how acoustic and thermal tools narrow a leak down before anyone cuts drywall. Dripping handles and slow basins are covered on the faucet and sink repair page.
Plumbing services in Denton
These are the jobs Denton homeowners search for most, ordered by how often they come up. Every page covers local causes, repair options and what drives the cost.
Water Heater Repair
Cold showers, rumbling tanks, pilot lights that will not stay lit.Leak Detection
A meter that moves with every tap closed, stains with no obvious source.Faucet & Sink Repair
Drips, loose handles, weak flow and leaks under the vanity.Drain Cleaning & Unclogging
Kitchen lines, tub drains and main lines cabled or jetted clear.Tankless Water Heater Service
Descaling, error codes and flow problems on on-demand units.Slab Leak Detection & Repair
Warm floors and cracked tile over lines buried in the foundation.Sewer Line Repair
Root intrusion, sagging laterals and repeat backups.Water Softener Installation & Repair
Sizing to your tested hardness, plus resin and valve repairs.All Plumbing Services
The full list of 25 services, including gas lines and commercial work.What Denton soil, water and housing do to your plumbing
Four local conditions explain a large share of the calls in this part of Denton County. Each one changes what a plumber should check first.

Clay that moves under the slab
Denton sits where the dark clay of the Blackland Prairie meets the sandier Cross Timbers. That clay swells after a wet spring and shrinks in a dry August, and a slab foundation rides the movement.
Supply lines and drains cast into the slab take the strain. Watch for a new crack in floor tile, a warm spot underfoot or a meter that spins with every fixture off. Each one points toward a slab leak worth locating before the next rain widens it.
Lake water and scale
City of Denton water is drawn from Lewisville Lake and Ray Roberts Lake, the reservoir about 10 miles north of town. Published hardness figures for Denton disagree widely, from moderately hard to very hard.
That spread is the reason to test your own tap before buying treatment equipment. An inexpensive test kit settles it. Either way, sediment builds up in tank water heaters here, and a yearly flush costs far less than a new tank.
The 2024 watering limits
In August 2024, two damaged filters at the Lake Lewisville treatment plant pushed the city into Stage 2 of its Drought Contingency Plan. From August 20 to October 8, outdoor watering dropped to once a week, with limits on foundation watering.
A slab that dries out unevenly can shift, and shifting is what cracks buried pipe. If new cracks showed up in drywall or tile after that fall, have the lines under the house checked now rather than after a failure.
Older homes downtown, rentals near campus
Houses in the Oak-Hickory Historic District and other older blocks near downtown may still carry galvanized supply pipe or cast iron drains. Galvanized pipe rusts from the inside and slowly chokes water pressure, which is usually the point where whole-home repiping is worth pricing.
Near UNT and TWU, high rental turnover means disposals, toilets and kitchen drains get hard use. Landlords and property managers can use the same line, and the plumber can coordinate access with tenants.
Is it an emergency? A quick guide for Denton homes
Match what you see to the row below. It tells you what to do in the next five minutes and how fast to get a plumber out.
| What you see | Likely cause | Do this right now | How urgent |
|---|---|---|---|
| Water spraying or pooling from a pipe. | A split supply line, often after a hard freeze or a failed fitting. | Close the main shutoff, then call. | Emergency. Call now. |
| Meter moving with every fixture off. | A hidden leak in the slab, the yard line or a running toilet. | Check toilets first, then book leak detection. | Same day. |
| Puddle under the water heater. | Tank failure, relief valve discharge or a loose fitting. | Close the cold supply valve on top of the tank and cut power or set gas to pilot. | Same day, sooner if it is steady. |
| Sewage rising in a tub or floor drain. | A main line blockage, often roots or a sagging section. | Stop running water anywhere in the house. | Emergency. Call now. |
| Rotten-egg smell near a gas appliance. | A possible natural gas leak. | Leave the house and call Atmos Energy from outside. | Gas utility first, plumber second. |
| One slow sink or tub. | A clog in the trap or branch line. | Skip chemical drain openers. | Book a normal visit. |
Before the plumber gets there: a five-minute checklist
Most water damage in a plumbing emergency happens in the first half hour. These steps cut it down, and none of them need tools beyond a flashlight.
- Find the house shutoff. On many Denton slab homes it sits in the garage or where the line enters the house. The city meter box near the street has a valve too, but it usually needs a meter key.
- Cut energy to a leaking water heater. Flip the breaker for an electric unit, or turn a gas control knob to pilot or off.
- After the main is closed, open an outdoor hose bib to drain the pressure left in the pipes.
- Photograph the damage and note the time. Insurers and landlords ask for both.
- Move rugs, boxes and electronics out of the water path.
Cannot find the shutoff? Say so when you call, and the dispatcher will help you look for it.
What happens after you call
Call
Describe what you see and give your Denton address or ZIP code.
Dispatch
The job goes to an available licensed plumber covering your side of the county.
Diagnose
The cause is found first, and the price is explained before repairs start.
Fix and test
Water goes back on, the repair is tested and the work area is cleaned up.
What changes the price of a plumbing repair in Denton
No honest plumber can quote a leak they have not seen. These five factors decide most of the final number, so it helps to know them before the visit.
- Time of the call. Nights, weekends and holidays usually cost more than a weekday appointment.
- Access. A line under a slab or behind tile takes more labor to reach than one under a sink.
- Pipe material and age. Galvanized steel, cast iron and polybutylene repairs often need adapters and extra parts.
- Permits. Larger jobs such as water heater replacement or sewer work may need a City of Denton permit and inspection.
- Equipment choice. A tank heater versus tankless, or a rebuild kit versus a new fixture, moves the total the most.
A note on insurance: homeowner policies often cover sudden water damage from something like a burst pipe. They usually do not pay to fix the pipe itself, and they rarely cover damage from a slow leak. Check your policy wording before assuming either way.
Want your real number? Call (940) 229-7314 and describe the problem. Non-emergency estimates are free, and emergency work is priced before it begins.
Denton plumbing questions, answered
Yes. The line is answered 24/7, including holidays, and an emergency plumber can be sent to any Denton ZIP code: 76201, 76205, 76207, 76208, 76209 and 76210. Arrival time depends on the hour and on how many emergency calls are open, so the dispatcher gives you a realistic window on the call.
For non-emergency work, yes. That covers things like a water heater replacement quote, a repipe or a softener install. Emergency visits are different: the plumber diagnoses the problem and tells you the price before any repair begins, so there is no surprise bill.
Yes. The Texas State Board of Plumbing Examiners has licensed plumbers statewide since the Plumbing License Law of 1947. Master, journeyman and tradesman licenses are all issued by the board, and you can look up any plumber's license on its website before work starts.
Inside Denton city limits, the work itself is held to the 2021 International Plumbing Code (IPC). The City adopted it in 2022 along with regional amendments from the North Central Texas Council of Governments, and permitted jobs are inspected against it.
Start with the toilets. Put a few drops of food coloring in each tank and wait 15 minutes without flushing. Color in the bowl means a leaking flapper, which is a cheap fix.
If the toilets pass, turn off every fixture and watch the meter's leak indicator. If it still moves, the leak is in a buried line or the slab, and professional leak detection is the next step before anything gets dug up.
Maybe. Published hardness numbers for Denton water vary a lot, so test your own tap first. If it reads above about 7 grains per gallon, a softener usually pays for itself through longer water heater and fixture life. The water softener installation page covers sizing.
Yes. Many calls from the neighborhoods around UNT and TWU come from tenants. The plumber can talk directly with the owner or manager about approval and billing. Under Texas law, most repairs for conditions that affect health or safety fall to the landlord once the tenant gives notice.
Emergency plumber for all of Denton and nearby towns
Coverage runs from the streets around UNT and TWU to Robson Ranch in the southwest. It reaches east past Loop 288 and north toward Ray Roberts Lake. Every Denton ZIP code below is inside the 24/7 service area, and callers in each one get the same dispatch line.
Outside the city limits, we also take plumbing calls in Corinth to the south. To the north and northwest sit Sanger and Krum, with homes in Argyle to the southwest and Aubrey to the northeast. The full list is on the service area page.

- Denton 76201
- Denton 76205
- Denton 76207
- Denton 76208
- Denton 76209
- Denton 76210
Denton Apex Plumbing coverage map
Coverage map for Denton and the nearby Denton County towns we serve.
Water where it should not be? Call now.
The line is open 24/7 for Denton and nearby Denton County towns. Say what you see and where you are.
Call (940) 229-7314