Drains & sewer · Houston
Drain cleaning in Houston, TX
If one fixture is slow, the clog is usually in that fixture's branch line. If several drains back up at once, or the basement floor drain fills when you run the washer, the main sewer line is blocked and needs a larger cable or a jetter.
- Licensed local plumbers
- The problem explained before work starts
- Price agreed before the job begins
Drain cleaning for Houston homes
Kitchen drains clog with grease and food. Bathroom drains clog with hair and soap. Main lines in older neighborhoods clog with roots that grow into clay pipe joints. Each needs a different tool, so the first job is figuring out which one you have.
For the full guide, including what you can safely do before a plumber arrives, see drain cleaning explained.
Drain cleaning in Houston at a glance
- Urgency
- Can be an emergency: shut off the water and call
- Area
- Houston, TX
- Who does the work
- An independent, licensed local plumber
- Permit
- Plumbing permits inside city limits are issued through the Houston Permitting Center
- Typical steps
- Find the blockage → Clear it → Verify flow → Recommend next steps
- Availability
- Call now to check plumber availability
Signs you need drain cleaning in Houston
- Water draining slowly from a sink, tub or shower
- Gurgling from a drain when another fixture runs
- Water coming up in the basement floor drain
- Sewage smell near a drain
- The toilet rising when the washer drains
Local conditions
Drain cleaning in Houston: what's different
Houston's heavy Gulf storms test every drain, and older cast-iron lines in the Heights and Montrose catch debris where they've cracked. Kitchen grease is a common cause of clogs in newer homes.
A plumber clears the line and recommends a camera inspection if the clog returns, since cracked drains under slabs are common in Houston.
Low-lying neighborhoods that see street flooding during tropical storms benefit from a backwater valve and a clear main line before hurricane season.
- Water and sewer in Houston
- Houston Public Works provides water and wastewater service inside the city; many suburbs are served by municipal utility districts (MUDs).
- Permits in Houston
- Plumbing permits inside city limits are issued through the Houston Permitting Center; unincorporated Harris County areas follow county and utility-district rules.
Houston housing and plumbing
Older neighborhoods like the Heights and Montrose have early 1900s homes with cast-iron drains, while most suburbs are post-1970 slab construction with copper or PEX supply.
Neighborhoods and ZIP codes
Plumbers on Thawline cover Houston and Harris County, including The Heights, Montrose, Bellaire, Memorial, Kingwood, Clear Lake. ZIP codes: 77001 · 77002 · 77003 · 77004 · 77005 · 77006.
Other Houston conditions that affect plumbing
- Shifting clay and slab leaks: Houston's clay swells in wet months and shrinks in drought, cracking cast-iron drains under slabs and stressing supply lines.
- Hurricane and flood season: Tropical storms and heavy rain can back up sewers and flood low-lying neighborhoods; backwater valves and clear main lines matter here.
- Rare hard freezes: Homes built for heat often have pipes in attics and exterior walls, so an occasional deep freeze can split lines across the city at once.
How drain cleaning works in Houston
- 1
Find the blockage
The plumber checks which fixtures are affected to tell a branch clog from a main line clog.
- 2
Clear it
A hand auger, a machine cable or a hydro jetter is used, sized to the pipe.
- 3
Verify flow
Water is run through the line to confirm it drains at full speed.
- 4
Recommend next steps
If roots or a sag are suspected, a camera inspection is offered before anything is dug up.
What affects drain cleaning cost in Houston
Every job is priced by the plumber after they see it. These are the things that move the price most. Ask for the price before work starts.
- Branch line or main sewer line
- Access: a cleanout versus pulling a toilet or going through a roof vent
- What the clog is made of (roots take longer than grease)
- Camera inspection added after cleaning
Drain cleaning questions in Houston
Why does my Houston drain back up during heavy rain?
Are chemical drain cleaners safe for my pipes?
How often should a main sewer line be cleaned?
Why does my basement floor drain back up when I do laundry?
Also in Houston
Related
Related plumbing services
Hydro jetting
Hydro jetting cleans the full width of a drain pipe with high-pressure water, washing out grease, scale and fine roots that a cable only punches a hole through.
Learn more
Sewer camera inspection
A sewer camera inspection runs a waterproof camera through the line from your house to the city main and records what it finds: roots, cracks, sags, offset joints or collapsed pipe.
Learn more
Sewer line repair
A damaged sewer line can be fixed with a spot repair, a trenchless liner, pipe bursting or an open-trench replacement.
Learn more
Garbage disposal repair
A disposal that hums but won't spin is jammed; one that does nothing has tripped its reset button or lost power.
Learn moreGuides
Read before you call
Drains & sewer
Why is my basement floor drain backing up?
When water comes up through the basement floor drain, the main sewer line is usually blocked between the house and the street. Stop using water upstairs, then call a plumber to clear the main line. If it happens more than once, a camera inspection shows the cause.
Drains & sewer
Should you get a sewer scope before buying a home?
For homes built before about 1980, or with large trees in the front yard, a sewer scope is worth it. A standard home inspection doesn't look inside the sewer line, and in most U.S. cities the buyer will own that line, often all the way to the main.
Emergencies
Sump pump not working? Causes and fixes
Check power first, then the float: if it's stuck against the pit wall the pump won't start. A pump that runs but doesn't empty the pit often has a frozen or clogged discharge line or a stuck check valve. If the pit is about to overflow, call right away.
Need drain cleaning in Houston?
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Call now to check plumber availability