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Find Sump pump or interior foundation drains installers in Longmont

Avatar for No Limits Plumbing & Drains
No Limits Plumbing & Drains
5.0(
105
)

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Warranties offered

Small jobs welcome

"He bid the washer box install then was able to add the drain pipe increase. Very neat work. Added a clean out with the drain increase that was needed. Pleasant easy to work with, good communicator, good quality work done timely. Really appreciated the work"
Sink Rough In
Washer
Sink for bathroom
Shower & Toilet
Before Cleanout

+2

Response time7 hrs
132 neighbors recently requested a quote
Recommended by57%of homeowners
Avatar for Last Repair
Last Repair
4.9(
116
)

Serving Longmont, CO and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"Jesse communicated really well and responded promptly. Replacing the sump pump was quick and easy task that took 15 minutes for $425 (pump is around $185 and the rest is labor). Not sure if this is a reasonable rate! but better than others."
Response time9 hrs
51 neighbors recently requested a quote
Recommended by95%of homeowners
Dr. Drain
5.0(
9
)

Serving Longmont, CO and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

"We highly recommend Dr. Drain. Jordan was extremely responsive to our calls and showed up on time. While we are not plumbing experts, we could tell that the quality of the work was excellent and we were charged a very fair price. In dealing with Jordan on several different occasions, it was clear to us that he places great emphasis on customer service and conducts himself in a highly professional manner."
Best Dog Ever
Pre Lined CIPP Pipe
Busy Day, Boulder CO
Wining
NuFlow Liner

+1

Response time2 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for ENNIS PLUMBING LLC
ENNIS PLUMBING LLC
4.9(
187
)

Serving Longmont, CO and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Ennis Plumbing not only did a great job but they followed the three or four golden rules of home construction/contracting: 1) Great Communication; 2) On time to start the job; 3) Clean and Profesional work; 4) Honest and Reasonable quote/estimate If you need plumbing work or are considering a remodel or new Construction -Ennis Plumbing should be part of your decision making process John Thornton, CO"
Additional Photos
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+39

Response time3 days
1 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Rooter Guy, LLC
Rooter Guy, LLC
4.7(
2,757
)

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Emergency services offered

"Ruben came in in his day off to clear my washer drain! He made it look easy! He was so nice and informative. The quality of work and reasonable cost was excellent. I would recommend Rooter Guy for anyone with drain issues."
sewer cleaning
1077 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Heart Heating, Cooling, Plumbing & Electric
Heart Heating, Cooling, Plumbing & Electric
4.9(
77
)

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"We had blockage in one of our main drain pipes, causing water to back up in the kitchen sink, bathroom sink, and washing machine drain. Jason was able to get to our house within an hour and had it fixed in less than an hour. Overall a very easy process and easy to work with."
Additional Photos
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Additional Photos

+24

20 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Groundworks
Groundworks
4.4(
384
)

Serving Longmont, CO and surrounding areas

Approved (Corporate)

In business since 1999

Free estimates

Warranties offered

"The Complete Basement Systems crew â â - Rogelio, Manuel, and Iranan â â - were professional, efficient, and hardworking. The service they performed was the installation of helical piers around my home to mitigate foundation settling due to the bentonite soil in the area. They made the process stress-free by immediately addressing any questions I had. They were also personable and friendly. They earned the 5-star rating!"
Protect Your Basement Before & After
Correct Your Wet Basement
Protect Your Basement
Waterproof Your Basement
Protect Your Concrete Before & After

+16

Response time3 days
95 neighbors recently requested a quote
Recommended by85%of homeowners
Showing 1-10 of 29
FAQs for sump pump or interior foundation drains installation projects in Longmont, CO

Most residential pumps draw approximately 1,300 to 2,900 watts when they first start, then settle at roughly 800 to 1,050 watts during normal operation. The exact number depends on the motor’s horsepower and how often the float switch tells the pump to run. Even at the high end, the electricity cost is minor compared with the expense of cleaning up a flooded basement.

Grab a ruler and an empty 18‑inch‑wide pit. During a steady rain, time how much the water rises in one minute. Multiply that depth (in inches) by 60 to calculate gallons per hour, then add 50% for safety. If the result tops 2,100 gallons per hour—about 35 gallons a minute—you’ll need a 3/4‑horsepower unit. Anything lower, and a 1/3- or 1/2-horsepower pump should do the trick.

Loud rattling, constant cycling, or shuddering vibrations are the pump’s way of telling you it’s on its last legs. Musty smells, higher electric bills, and visible rust are other red flags. If the unit is 10 years old or older and exhibits any of these symptoms, replace it before the next heavy rain turns your basement into a wading pool.

You don’t have to hire a licensed plumber, but you should still bring in someone who installs sump pumps for a living—whether that’s a plumber, basement‑waterproofing specialist, or experienced handyman. They know the local codes, can wire the pump safely, and will test the system before they leave. Skipping professional help might void the warranty and could leave you with a pump that fails when you need it most.

Not every basement needs a pump, but if your home sits in a floodplain, has a high water table, or has ever taken on water during a storm, a sump pump is inexpensive insurance. For basements that only struggle with condensation or the occasional damp spot, sealing cracks and improving drainage may be all that is needed.

The Longmont, CO homeowners’ guide to sump pump or interior foundation drains installations

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