Drains & sewer · Denver
Drain cleaning in Denver, CO
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 Denver 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 Denver at a glance
- Urgency
- Can be an emergency: shut off the water and call
- Area
- Denver, CO
- Who does the work
- An independent, licensed local plumber
- Permit
- Plumbing permits and inspections are handled by Denver Community Planning and Development. Sewer work in the street also needs a right-of-way permit from the city.
- 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 Denver
- 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 Denver: what's different
In Denver's older neighborhoods, a slow drain is often more than a hair clog. Capitol Hill, Baker and Highland homes frequently have clay sewer laterals, and roots from mature silver maples, elms and cottonwoods grow into the joints. When the main line slows, the basement floor drain is usually the first place water appears.
A plumber clears the line with a cable sized to the pipe, then recommends a camera inspection if roots or a damaged joint are likely to bring the clog back. In post-war ranches in Harvey Park, cast-iron drains with heavy scale can also catch debris and slow down.
- Water and sewer in Denver
- Denver Water supplies drinking water. Wastewater is collected by the city and treated by Metro Water Recovery. Homeowners own the sewer service line from the house to the main in the street.
- Permits in Denver
- Plumbing permits and inspections are handled by Denver Community Planning and Development. Sewer work in the street also needs a right-of-way permit from the city.
Denver housing and plumbing
Bungalows and foursquares from the 1900s–1930s often have clay sewer lines and partial galvanized supply lines, sometimes spliced to copper during earlier remodels. Post-war ranches from the 1950s typically have cast-iron drains and copper or galvanized supply. Many have finished basements added decades later, which hide pipes that run along cold foundation walls.
Neighborhoods and ZIP codes
Plumbers on Thawline cover Denver and Denver County, including Capitol Hill, Highland, Washington Park, Park Hill, Baker, Berkeley, Harvey Park, Montclair, Central Park, Green Valley Ranch. ZIP codes: 80202 · 80203 · 80204 · 80205 · 80206 · 80207 · 80209 · 80210 · 80211 · 80212 · 80216 · 80218 · 80219 · 80220 · 80222 · 80223 · 80224 · 80230 · 80231 · 80236 · 80237 · 80238 · 80239 · 80246 · 80247 · 80249.
Other Denver conditions that affect plumbing
- Roots in clay sewer laterals: Mature silver maples, elms and cottonwoods line many older Denver streets, and their roots find every joint in clay sewer pipe. Recurring main line clogs in a pre-1960 home are usually roots.
- Galvanized supply pipe: Low pressure and rusty water in older homes usually trace back to galvanized steel pipe corroding from the inside. Partial repipes are common where only some runs were replaced.
- Lead service line replacement: Denver Water runs a lead service line replacement program for homes with lead pipes from the main. If you get a notice, the utility's program can cover replacement of the service line.
How drain cleaning works in Denver
- 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 Denver
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 Denver
Why does my Denver basement drain back up when the washer runs?
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 Denver
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 Denver?
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