A burst pipe flooding a basement near Chautauqua Park at 3 a.m., a sewage backup rising into a University Hill neighborhood bathroom along Broadway, or a water heater that ruptures the morning before a family gathering in your Boulder home — plumbing emergencies never wait for business hours, and neither do we. When you need an emergency plumber Boulder CO homeowners and businesses can reach in minutes, Larimer Denver Plumbers answers the phone live, 24 hours a day, 365 days a year. For over 35 years we've delivered round-the-clock emergency plumbing services across Boulder — from the Flatirons foothills to the Louisville and Lafayette city lines — with same-day response, 50 skilled professionals on call, and 24/7 service at no extra charge.
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When a plumbing emergency strikes in Boulder, every minute counts — water spreads fast, sewage damage compounds quickly, and a gas leak is an immediate safety risk. That's why Larimer Denver Plumbers was built around a single promise back in 1990: when Boulder has a plumbing emergency, a licensed professional answers the phone, day or night. As the same-day emergency plumber Boulder CO homeowners and business owners call first, we know the city's pipe configurations, soil conditions, and aging infrastructure block by block — from the historic Victorian and Craftsman homes of the Mapleton Hill neighborhood and the student rental properties surrounding the University of Colorado Boulder campus in the 80302 and 80303 ZIP codes to the newer residential developments along the 80304 corridor near North Boulder and the established family neighborhoods of Martin Acres and Table Mesa — so our technicians often arrive already knowing what they're likely to find.
Our team of 50 skilled professionals runs 10 fully-equipped service vans staged throughout the Denver Metro Area, each stocked to resolve the most common Boulder emergencies on the first visit. From a burst copper line beneath a Boulder slab foundation to a failed water heater or a backed-up main sewer line running beneath the older streets of the Hill neighborhood or the aging apartment corridors that serve the University of Colorado Boulder student population, our trucks carry the parts, pumps, cameras, and diagnostic tools needed to stop the damage and complete the repair on site — without waiting for a supply run.
Larimer Denver Plumbers holds a Colorado Master Plumber License and carries comprehensive General Liability, Workers' Compensation, Commercial Auto, Inland Marine, and Contractors Errors & Omissions Insurance — so every emergency repair in Boulder is documented, code-compliant, and fully protected from the first shut-off valve to the final cleanup.
A real dispatcher picks up every call, day or night, holiday or weekend.
Based in Denver, we reach Boulder quickly via US 36 with the nearest stocked van staged across the metro.
24/7 service billed at our standard rate, with no after-hours upcharge.
Parts, pumps, and cameras on board for first-visit repairs.
Documented, code-compliant work you can show your insurer.
Thousands of Boulder emergencies diagnosed and resolved since 1990.
Every emergency call in Boulder is handled by credentialed technicians working under verifiable state licensing and industry certifications. Our Colorado Master Plumber license number is posted on every invoice and available on request.
From a burst pipe that's flooding your Boulder floor to a sewer backup spreading through your home near the Colorado Chautauqua National Historic Landmark or a backed-up drain in a University Hill rental property, Larimer Denver Plumbers handles every urgent plumbing situation Boulder throws at us. Each emergency plumbing service below is performed by a Colorado Master Plumber licensed technician using professional-grade equipment — dispatched the moment you call.
Rapid burst pipe and water line repair to stop active flooding in Boulder homes, rental properties, and businesses.
Clogged or overflowing drains cleared fast, day or night, anywhere in Boulder. Professional drain cleaning with snaking and hydro jetting equipment.
Emergency sewage backups diagnosed and repaired with trenchless methods throughout Boulder. Sewer camera inspection pinpoints the cause precisely.
No hot water or a leaking, ruptured tank? Same-day water heater repair across Boulder. For on-demand systems, see our tankless water heater services.
Urgent slab leak location under Boulder foundations before hidden water damage spreads beneath your home or rental property.
Smell gas? Licensed emergency gas line shut-off, leak repair, and pressure testing in Boulder. Leave the property immediately and call from outside.
Hidden leaks found fast inside Boulder walls, floors, and ceilings using electronic leak detection equipment — no destructive exploratory cutting.
Overflowing, clogged, or broken toilets fixed promptly to stop the mess in Boulder homes and rental units.
High-pressure water jetting clears severe grease, root, and scale blockages in Boulder drain and sewer lines.
Failed sump pump service to prevent flooding in Boulder basements and crawlspaces — critical near Boulder Creek and low-lying areas prone to rapid snowmelt runoff.
Real-time camera diagnosis pinpoints the exact cause of any Boulder drain or sewer emergency — root intrusion, collapse, or blockage.
Emergency tankless unit repair to restore hot water fast in Boulder homes, rental properties, and businesses.
Stuck, broken, or gushing faucets and sink fixtures repaired same-day throughout Boulder.
Jammed or leaking disposals fixed before they flood your Boulder kitchen sink cabinet.
Fast water extraction and damage mitigation after Boulder pipe bursts and plumbing failures — insurance documentation included.
Emergency backflow preventer repair protects Boulder's drinking water supply from contamination — essential in a city with strict water quality standards and an active municipal watershed protection program.
Failing whole-home plumbing replaced for Boulder properties — from historic Mapleton Hill Victorians to aging University Hill rental buildings — plagued by chronic leaks. Repiping in modern copper or PEX.
24/7 emergency plumbing for Boulder restaurants, Pearl Street Mall businesses, University of Colorado facilities, offices, retail, and multi-unit buildings. Full commercial plumbing capabilities.
From the moment you call to final cleanup, we keep the process clear and fast — so you always know what's happening and what it will cost.
A real dispatcher answers any hour and gathers the details of your Boulder plumbing emergency — no menus, no callbacks, no answering service. Call (720) 343-5151 now.
We send the nearest fully-stocked service van, give you a realistic arrival time, and walk you through quick steps to limit damage until we arrive — whether you're near Chautauqua Park, the University of Colorado Boulder campus, Pearl Street Mall, North Boulder, Table Mesa, or anywhere along the Boulder Creek corridor.
Your licensed technician pinpoints the problem with cameras and electronic tools, then explains the fix and the price before any work begins — no surprise charges, no hidden fees.
Most Boulder emergencies are repaired on the first visit, tested to confirm the fix, and cleaned up — with full documentation for your records, your landlord, or your insurer.
Boulder's unique combination of historic housing stock in its oldest neighborhoods, a massive student rental property market surrounding the University of Colorado Boulder campus, exceptionally hard water from the Boulder Canyon watershed and Barker Reservoir system, highly expansive clay soils along the Front Range benches, and the city's proximity to Boulder Creek and the mountain snowmelt drainage network produce a distinct and consistently predictable set of plumbing emergencies. As a 24-hour plumber Denver Metro and Front Range residents have relied on since 1990, Larimer Denver Plumbers has handled thousands of these urgent calls across Boulder. Here are the emergencies we respond to most — and exactly how we stop the damage.
Boulder's historic neighborhoods — Mapleton Hill, Whittier, Newlands, and the streets surrounding the University of Colorado Boulder campus on University Hill — contain some of the oldest residential plumbing infrastructure in Boulder County. Many of these homes were originally constructed between the 1890s and the 1940s, and while most have been updated over the decades, significant portions of original galvanized steel supply piping and clay sewer laterals remain in service behind finished walls, beneath basement floors, and under landscaped yards throughout these neighborhoods. Galvanized pipe corrodes progressively from the inside out — rust and mineral deposits narrow the interior bore over years until a section fails catastrophically, often releasing water through a wall or ceiling without warning. Boulder's dramatic temperature swings between warm Chinook wind events and hard freezes — a meteorological pattern unique to the Front Range — place additional freeze-thaw stress on pipes in exterior walls, crawlspaces, and unheated garages throughout the winter season.
Our emergency crew responds immediately, shuts off the water supply, locates the failure with electronic leak detection equipment, and completes a code-compliant repair on the spot. For Boulder homes and rental properties with repeated pipe failures or original galvanized infrastructure throughout, we recommend whole-home repiping in modern copper or PEX — materials that handle Boulder's altitude, temperature extremes, and high-mineral water chemistry reliably for decades.
Boulder sits on some of the most geologically active soil conditions along Colorado's entire Front Range — a combination of highly expansive Denver Formation clay beneath the city's eastern neighborhoods and the rocky, fractured substrates that characterize the properties closest to the Flatirons and the mountain front. Both soil types create significant stress on plumbing buried beneath concrete slab foundations. Expansive clay swells dramatically with moisture from Boulder's spring snowmelt and summer monsoon rain events, then contracts sharply during the dry fall and winter months — placing copper water lines beneath slabs under continuous cyclical stress until a crack or pinhole forms. Properties near the mountain front experience additional ground movement from frost heave at high altitude and the freeze-thaw cycling that occurs at Boulder's 5,430-foot elevation — significantly more aggressive than at lower Front Range elevations.
A slab leak beneath a Boulder home or rental property often presents as warm or discolored patches on the floor, a steadily climbing Boulder Water Utilities bill, or the persistent sound of running water with every fixture closed. Our specialists deploy calibrated electronic acoustic listening devices and thermal imaging cameras to locate the leak precisely beneath your slab — then repair it using the least invasive method available, protecting your flooring and minimizing the concrete work required.
Boulder's sewage backup emergency calls come from two very distinct sources — and both are common. In the city's older historic neighborhoods, mature trees lining Mapleton Avenue, Pine Street, Spruce Street, and the established residential boulevards of Newlands and Whittier have spent decades driving roots into aging clay tile and Orangeburg sewer laterals, infiltrating joints and cracks until raw sewage is forced back through the lowest fixtures in the home. In the University Hill and university-adjacent rental neighborhoods, the combination of high-occupancy rental units, aging multi-unit plumbing systems, and heavy daily use creates chronic drain overload — grease, non-flushable wipes, and organic waste accumulate in laterals that were originally sized for single-family use. Both failure modes produce the same result — raw sewage backing up into tubs, floor drains, and toilets — a serious health emergency requiring immediate professional response.
We deploy a waterproof sewer camera to identify the exact cause and location of the failure, clear the obstruction with hydro jetting, and repair or reline the damaged section using trenchless pipe lining technology — protecting Boulder's famously maintained yards, gardens, and landscaping throughout the repair process.
Boulder's municipal water supply — drawn from the Boulder Canyon watershed, Barker Reservoir, and supplemental Denver Water connections — delivers water with significant mineral content that is further concentrated by Boulder's high elevation and its effects on water chemistry. Calcium and magnesium scale accumulates aggressively inside conventional tank water heaters and tankless systems operating in Boulder, coating heating elements, insulating tank walls from heat transfer, and accelerating the corrosion that ultimately causes tank failure. At Boulder's elevation of 5,430 feet, water heaters also operate under modified combustion conditions — gas units must be properly altitude-adjusted to fire efficiently, and units that were never correctly set for Boulder's elevation run hotter and less efficiently than intended, shortening their operational lifespan.
When a water heater fails in a Boulder home or multi-unit rental building, our team responds immediately — shutting off the unit and the water supply, containing any spill, and repairing or replacing the water heater the same day with a unit correctly configured for Boulder's altitude and water chemistry. A water softener installation is strongly recommended to protect your new or existing water heater from Boulder's aggressive mineral content.
Boulder Creek runs through the heart of the city — from its mountain canyon origins through downtown Boulder and the residential neighborhoods of Mapleton Hill, Whittier, and the creekside properties along Canyon Boulevard and Arapahoe Avenue before continuing east toward the plains. Properties near Boulder Creek, Goose Creek, and the Bear Creek drainage are genuinely vulnerable to rapid flooding events driven by Colorado's intense summer thunderstorms and spring mountain snowmelt — a risk that was dramatically demonstrated during the catastrophic September 2013 Boulder flood, which caused over $150 million in property damage across the city and surrounding Boulder County.
Sump pump systems are the critical first line of defense for Boulder basements and crawlspaces in flood-exposed zones, and a sump pump failure during a rain event or rapid snowmelt can allow water to enter finished living spaces within hours. Our team responds to sump pump emergencies throughout Boulder at any hour — diagnosing whether the failure is mechanical, electrical, due to a clogged discharge line, or a float switch malfunction — and restores functional flood protection as quickly as possible. For properties in Boulder's most flood-exposed zones near the creek corridors, we also recommend and install battery backup sump systems and water alarm monitoring that maintain protection even during the power outages that frequently accompany Boulder's most severe storm events.
Boulder's nationally recognized restaurant and hospitality scene — concentrated along Pearl Street Mall, the 28th Street commercial corridor, North Broadway, and the growing Gunbarrel and East Boulder commercial zones — generates significant volumes of cooking grease that enters Boulder's drain infrastructure daily from restaurant kitchen floor drains, prep sink drains, and grease trap overflow. In residential areas throughout Boulder — particularly in the high-density rental neighborhoods surrounding the University of Colorado Boulder campus — everyday kitchen grease, soap scum, and organic waste combine with the mineral scale that Boulder's hard water deposits on interior pipe walls, progressively narrowing drain lines until backups develop.
Our hydro jetting equipment delivers a precisely focused, high-pressure water stream that scours accumulated grease, mineral deposits, root intrusion residue, and debris completely from the interior pipe wall — restoring full flow capacity and extending the functional life of Boulder's mixed-age drain infrastructure without the corrosive chemical damage associated with commercial drain cleaners. For Boulder commercial properties, we also service and install grease traps to maintain compliance with Boulder's municipal discharge requirements.
Boulder's gas line emergency landscape is shaped by two distinct infrastructure realities. In the city's historic neighborhoods — Mapleton Hill, Whittier, Newlands, and the older sections of University Hill — original black iron gas service piping installed between the 1920s and the 1960s remains in service behind walls, beneath floors, and in crawlspaces throughout thousands of Boulder homes. These aging pipes corrode at joints and threaded fittings over decades, particularly in the crawlspaces and basement utility areas that characterize Boulder's older housing stock, where moisture exposure accelerates metal degradation. In the city's high-density rental neighborhoods and multi-unit buildings near the University of Colorado Boulder campus, gas piping serving multiple units across aging systems can develop leaks at aging flex connectors, corroded appliance shutoffs, and deteriorating meter connections — with the added risk that a gas leak in a multi-unit building affects multiple households simultaneously. Boulder's Front Range elevation and temperature extremes accelerate seal degradation across all gas pipe types.
⚠️ A gas leak is a life-safety emergency. If you smell gas anywhere in your Boulder property — historic home, rental unit, or commercial building — leave immediately and call Larimer Denver Plumbers from a safe distance outside at (720) 343-5151.
Our licensed technicians locate the leak with calibrated detection equipment, repair or replace the compromised pipe with code-approved materials, and conduct a full pressure test before signing off for Boulder building permit and insurance compliance. See our full gas line repair & replacement services.
Not every plumbing issue can wait for a scheduled appointment. If any of the following is happening in your Boulder home, rental property, or business, call right away — fast action limits damage and cost.
Seeing any of these in Boulder? Don't wait for the damage to spread.
Call (720) 343-5151 NowThese are the questions Boulder homeowners, rental property owners, and business owners ask us most often during a plumbing emergency. If your situation isn't covered below, call us directly at (720) 343-5151 for immediate help.
Larimer Denver Plumbers answers its dispatch line live 24 hours a day and immediately routes the nearest available service van to your Boulder address. Because we run 10 fully-stocked vans staged across the Denver Metro Area and reach Boulder directly via US 36 — the Boulder Turnpike — from our Denver base, Boulder emergency calls are prioritized for the fastest possible arrival. When you call, we provide a realistic ETA and walk you through immediate damage-limiting steps until our technician reaches you — whether you're in Mapleton Hill, University Hill, North Boulder, Table Mesa, or the Gunbarrel area.
No. Larimer Denver Plumbers offers 24/7 emergency service at no extra charge in Boulder. A burst pipe at 2:00 a.m. during a Boulder winter storm is handled at our standard service rate — no after-hours surcharge, no weekend premium, no holiday upcharge. We believe Boulder homeowners, renters, and businesses should never have to weigh a midnight upcharge against the damage an active plumbing emergency is causing — so we removed that barrier entirely.
For most plumbing emergencies in Boulder, your first step is to shut off the water supply. For a single fixture — a toilet, sink, or dishwasher — turn the small shut-off valve beneath or behind it clockwise until it stops. For a burst pipe or major leak, locate and close your home's main water shut-off valve — typically near the street meter box, in the basement utility area, or where the main line enters the foundation. If water is entering your Boulder basement during a storm or snowmelt event, check your sump pump immediately and move valuables to higher ground. If you smell gas anywhere in the property, leave immediately and call from outside. Then call Larimer Denver Plumbers at (720) 343-5151 — our dispatcher will guide you through every additional protective step until our technician arrives.
Larimer Denver Plumbers handles every category of plumbing emergency in Boulder — including burst and leaking pipes in historic homes and rental properties, sewage and drain backups from root intrusion and rental property overload, water heater failures and tank ruptures, slab leaks beneath concrete foundations, gas line leaks in historic and multi-unit buildings, overflowing toilets, failed sump pumps during Boulder Creek corridor flood events, frozen and cracked pipes following Boulder's hard overnight freezes, and major fixture leaks. We also provide emergency water damage mitigation and 24/7 commercial plumbing for Boulder restaurants, Pearl Street Mall businesses, University of Colorado facilities, offices, and multi-unit rental buildings. Every emergency is handled by a Colorado Master Plumber licensed technician equipped to diagnose and repair the problem on the first visit.
Yes. Every emergency plumber from Larimer Denver Plumbers works under our Colorado Master Plumber License, and the company carries full General Liability Insurance, Workers' Compensation Insurance, Commercial Auto Insurance, Inland Marine (Tools & Equipment) Insurance, and Contractors Errors & Omissions (Professional Liability) Insurance. Our technicians also hold Colorado Journeyman and Residential Plumber Licenses, Backflow Prevention Certification, and Medical Gas Certification. Every emergency repair in Boulder — historic home, rental property, or commercial building — is documented, code-compliant, and fully insured. Our license details are available on request at any job site.
Yes. Larimer Denver Plumbers has extensive experience with the unique plumbing demands of Boulder's university-adjacent rental market — high-occupancy multi-unit buildings, aging converted single-family rentals on University Hill, and the dense apartment corridors along Broadway, 28th Street, and Folsom Street. We respond to landlord and property management emergency calls 24 hours a day — providing fast, documented, code-compliant repairs that satisfy Boulder's building inspection requirements and give property owners the documentation needed for insurance claims and tenant communications. See our full commercial plumbing services.
Yes. Sump pump service and emergency repair is one of our most critical offerings for Boulder properties — particularly for homes and businesses in the lower-elevation areas near Boulder Creek, Goose Creek, and the Bear Creek drainage corridors, where the 2013 flood demonstrated the catastrophic damage potential of a sump pump failure during a major rain or snowmelt event. We respond to sump pump failures at any hour, diagnose the exact cause of failure, and restore flood protection as quickly as possible. For Boulder properties in flood-prone zones near the creek corridors, we also install and recommend battery backup sump systems that maintain protection even during power outages.
Yes. Boulder Water Utilities maintains some of the most stringent water quality and backflow prevention compliance requirements in Colorado — reflecting the city's strong commitment to protecting its municipal watershed. Larimer Denver Plumbers holds current Backflow Prevention Certification and responds to backflow preventer failures, annual testing failures, and emergency repairs throughout Boulder. We understand Boulder's specific municipal compliance requirements and provide the documentation needed to satisfy Boulder Water Utilities inspection and reporting standards.
When routing an emergency call to Boulder, our team accounts for traffic conditions on US 36 (Boulder Turnpike), US 287, Canyon Boulevard, Broadway, 28th Street, Arapahoe Avenue, and Baseline Road — plus access throughout Boulder's distinct neighborhoods and communities, from the historic streets of Mapleton Hill and Whittier to the University Hill and University of Colorado Boulder campus area, the Pearl Street Mall commercial district, North Boulder neighborhoods along North Broadway and Linden Avenue, the Table Mesa and Martin Acres communities in South Boulder, the Gunbarrel research and residential area in East Boulder, and the creekside neighborhoods along the Boulder Creek and Goose Creek corridors. Operating out of Denver with direct highway access to Boulder via US 36, Larimer Denver Plumbers reaches most Boulder addresses efficiently — with technicians familiar with Boulder's unique parking restrictions, neighborhood access patterns, and the mountain-front road conditions that affect response during winter weather events.
Don't let a plumbing emergency get worse while you wait. Whether you're facing a burst pipe in a Mapleton Hill historic home, a sewage backup in a University Hill rental property, a ruptured water heater before a Colorado winter morning, a sump pump failure during a Boulder Creek flood event, a gas line leak in a multi-unit building near the University of Colorado Boulder campus, or any plumbing emergency anywhere in Boulder — our team is standing by 24 hours a day, 7 days a week to respond immediately. If you can't find the information you need about our emergency plumbing services in Boulder CO, reach out and our team will walk you through every option. Call now or submit the form below for immediate dispatch from the fastest, most reliable emergency plumber Boulder CO.