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Top-Rated Sump pump installation pros in Longmont - Updated Nov 2026

Avatar for Waterworx Plumbing
Waterworx Plumbing
4.8(
99
)
Sump Pump - Repair or ReplaceSump Pump or Interior Foundation Drains - Install

Serving Longmont, CO and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

Waterworx Plumbing is a fully licensed and insured plumbing company with over 25 years of experience. We offer flat rate fees for small routine jobs but in most cases we charge a $92 trip charge and a $92 one hour minimum. An estimate is always free and provided up-front. Our technicians not paid on commission and are always on time!. We provide excellent service to all of our customers whether you're a first-time or a lifelong customer! We value your time as well as ours and strive to complete each job in that fastest time possible while maintaining the highest quality work!

2 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Compass Plumbing
Compass Plumbing
5.0(
33
)
Sump Pump - Repair or Replace

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Warranties offered

"Jay immediately answered my inquiry and provided same-day service. He thoroughly explained what he was going to do and got the job done fast. His pricing was much better and service was faster than going through the big brand companies. I am incredibly satisfied and will be keeping Jay's card around for future plumbing repair needs."
Water Heating Systems
Navien Boiler
Response time2 hrs
Response rate96%
1 neighbors recently requested a quote
Avatar for Precision Plumbing Heating Cooling Electric
Precision Plumbing Heating Cooling Electric
4.5(
198
)
Sump Pump - Repair or Replace

Serving Longmont, CO and surrounding areas

Approved

In business since 1982

Warranties offered

Credit card accepted

"Had a humidifier replace. Quick, efficient a d professional. Sam and Eric really knew what they were doing. Choices above are limited so I had to choose something."
Response time6 days
20 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for 1st Action Plumbing Heating and Air, Inc.
1st Action Plumbing Heating and Air, Inc.
4.6(
153
)
Sump Pump - Repair or Replace

Serving Longmont, CO and surrounding areas

Approved

In business since 2017

Free estimates

Small jobs welcome

"Got 3 quotes, 1st Action was considerably less. I called to verify that the quote was correct, no add on, or hidden fees. The quote was correct. Installers took time to explain everything about the furnace on installation, operation, and concerns that I had. Installers cleaned up after the installation and removed the old furnace. They did a great job. The estimator was also the installer."
Navien Tankless
Lennox EL296V
Response time5 hrs
6 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Rooter Guy, LLC
Rooter Guy, LLC
4.6(
3,131
)
Sump Pump - Repair or ReplaceSump Pump or Interior Foundation Drains - Install

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Emergency services offered

"Rooter Guys installed a sump pump in my basement after we began experiencing flooding. They rearranged their schedule in order to fit us in sooner given the urgency of the project. They were professional, hardworking and kept us informed throughout the process."
sewer cleaning
1264 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Afford-A-Rooter
Afford-A-Rooter
4.4(
138
)
Sump Pump - Repair or ReplaceSump Pump or Interior Foundation Drains - Install

Serving Longmont, CO and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"We heard a constant hum from the sump pump last evening and found the motor trying to run but nothing being pumped out. We pulled the plug and called for service. Joe found nothing wrong with the pump. A switch was turned off that should have been on and the outside drainpipe was frozen solid. We had not thought of the drainpipe as we knew the water pumped out a few days before as snow was melting. An unusually long cold spell caused freezing and pitch of the pipe was wrong at the end of the pipe. Joe was very knowledgeable and honest. He got things working again and gave us good information for the future. We will definitely use this business for future plumbing needs. We would recommend them to others. We felt the service fee was reasonable too."
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+7

Response time5 days
Response rate100%
2 neighbors recently requested a quote
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Sump Pump Installation FAQs, answered by experts

Sump pumps remove excess water from the lowest point of your home, which prevents flooding. When a sump pit fills with water, a sump pump pushes that water outside of the basin and into an exterior discharge pipe. From there, the water flows away from your home, so it doesn’t damage your foundation.

Several indicators suggest it's time for a sump pump replacement. A key factor is age; if the pump is over 10 years old, its lifespan is likely ending. Performance issues are also clear signs, such as the pump running constantly, cycling on and off frequently, making unusual noises or vibrations, or failing to function at all. A faulty or burnt-out motor is another definite sign a replacement is needed. Additionally, if you notice any signs of incorrect installation, the pump should be replaced. For a definitive diagnosis, a vetted plumber can assess the pump and confirm whether a replacement is necessary.

You should be fine. Most high-grade grinder pumps have a 24-hour holding capacity within the tank. You can continue to use the facilities so long as the power outage does not stretch into days. In a worst-case scenario, attach a generator to the grinder pump, providing it has sufficient electric capacity.

If your sump pump isn’t engaging, it might be clogged with dirt and debris. Check to see if the fitting lid is loose and has been letting debris in. Next, check the float and make sure it’s not obstructed by rust or gunk, which results from insufficient maintenance. Tangled wires or damaged switching systems can also stop your sump pump from engaging.

Some sump pumps are powered by water rather than electricity. Water-powered sump pumps generally use one gallon of city water to pump out two gallons of water from its basin. Therefore, if you're looking at a potential 10,000-gallon flood, your sump pump will need to use 5,000 gallons of city water to prevent it.

The Longmont, CO homeowners’ guide to sump pump installation services

From average costs to expert advice, get all the answers you need to get your job done.