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Find Sump pump or interior foundation drains installers in Knoxville

Avatar for NV Waterproofing, LLC

NV Waterproofing, LLC

4.86(
7
)
•Approved Pro

NV Waterproofing, LLC

4.86(
7
)
•Approved Pro
Super Service Award
Customers say: True professional
22 years of experience
Free onsite estimate

With over 900 5-star Google reviews, NV Waterproofing & Foundation Repair has been locally owned and operated since 1986, proudly solving underlying water problems for thousands of homeowners. We specialize in turning wet, stinky spaces into dry, healthy basements. From basement waterproofing, foundation repair concrete leveling and crack repair, we'll ensure your home stays safe, dry, and protected. To find out more about our services, contact the basement waterproofing experts at NV Waterproofing & Foundation Repair today. We offer free, no-obligation cost estimates in Washington D.C., Northern VA and Southern MD.

"I highly recommend NV Waterproofing & Foundation Repair! The work crew, Alfredo, David, and Javier were excellent! Alfredo Hernandez, the Foreman, kept me updated every step of the process, thoroughly answered every question I had, and addressed all concerns with expert problem solving and skill. These three men were in my home for a couple weeks doing extensive foundation and waterproofing work. They were always professional, courteous, and kept the work space clean. I was able to leave home for appointments with full confidence and trust in this crew. The sales manger, Brendan Feehan, was incredibly knowledgeable as well, and was able to solve every problem with my complex foundation and waterproofing issues. He was accessible to answer any questions I had throughout the process, and available to stop by as needed. Brendan is professional, helpful, and an expert in this profession. He's not just selling products. He understands the complexities of old and new construction"

Emily T on September 2025

With over 900 5-star Google reviews, NV Waterproofing & Foundation Repair has been locally owned and operated since 1986, proudly solving underlying water problems for thousands of homeowners. We specialize in turning wet, stinky spaces into dry, healthy basements. From basement waterproofing, foundation repair concrete leveling and crack repair, we'll ensure your home stays safe, dry, and protected. To find out more about our services, contact the basement waterproofing experts at NV Waterproofing & Foundation Repair today. We offer free, no-obligation cost estimates in Washington D.C., Northern VA and Southern MD.

"I highly recommend NV Waterproofing & Foundation Repair! The work crew, Alfredo, David, and Javier were excellent! Alfredo Hernandez, the Foreman, kept me updated every step of the process, thoroughly answered every question I had, and addressed all concerns with expert problem solving and skill. These three men were in my home for a couple weeks doing extensive foundation and waterproofing work. They were always professional, courteous, and kept the work space clean. I was able to leave home for appointments with full confidence and trust in this crew. The sales manger, Brendan Feehan, was incredibly knowledgeable as well, and was able to solve every problem with my complex foundation and waterproofing issues. He was accessible to answer any questions I had throughout the process, and available to stop by as needed. Brendan is professional, helpful, and an expert in this profession. He's not just selling products. He understands the complexities of old and new construction"

Emily T on September 2025

Avatar for JES Foundation Repair

JES Foundation Repair

4.51(
706
)
•Approved Pro

JES Foundation Repair

4.51(
706
)
•Approved Pro
Super Service Award
Customers say: Super punctual
172 local quotes requested
33 years of experience

JES Foundation Repair (JES), A Groundworks Company, specializes in helping homeowners with their foundation repair, basement waterproofing, crawl space encapsulation, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across Virginia and Maryland. With fully trained technicians, industry-leading products, and nationally backed warranties, JES is here to restore your foundation or crawlspace.

"Worst experience ever. Unresponsive, unwilling to complete the work, no communication among the different teams which came to the house to do the work, lying every time I talked with person who gave me the estimate and signed the contract with, lying by a supervisor, and more ? Horrible company."

George K on January 2026

JES Foundation Repair (JES), A Groundworks Company, specializes in helping homeowners with their foundation repair, basement waterproofing, crawl space encapsulation, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across Virginia and Maryland. With fully trained technicians, industry-leading products, and nationally backed warranties, JES is here to restore your foundation or crawlspace.

"Worst experience ever. Unresponsive, unwilling to complete the work, no communication among the different teams which came to the house to do the work, lying every time I talked with person who gave me the estimate and signed the contract with, lying by a supervisor, and more ? Horrible company."

George K on January 2026

Avatar for JES Foundation Repair

JES Foundation Repair

4.76(
924
)
•Approved Pro

JES Foundation Repair

4.76(
924
)
•Approved Pro
Customers say: Quality work
169 local quotes requested
33 years of experience

JES Foundation Repair (JES), A Groundworks Company, specializes in helping homeowners with their foundation repair, basement waterproofing, crawl space encapsulation, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across Virginia and Maryland. With fully trained technicians, industry-leading products, and nationally backed warranties, JES is here to restore your foundation or crawlspace.

"We had foundation repair done recently in bitter cold weather. Joe Autry, Larry Robinson, Dante' Gladden and William Lawrence worked continuously to get the job done before the snowstorm hit. These guys were unbelievable; they had to hand dig our property to get the job done. We are so impressed by their workmanship, work ethics and dedication to ensuring the job was done correctly."

Eleanor C on February 2026

JES Foundation Repair (JES), A Groundworks Company, specializes in helping homeowners with their foundation repair, basement waterproofing, crawl space encapsulation, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across Virginia and Maryland. With fully trained technicians, industry-leading products, and nationally backed warranties, JES is here to restore your foundation or crawlspace.

"We had foundation repair done recently in bitter cold weather. Joe Autry, Larry Robinson, Dante' Gladden and William Lawrence worked continuously to get the job done before the snowstorm hit. These guys were unbelievable; they had to hand dig our property to get the job done. We are so impressed by their workmanship, work ethics and dedication to ensuring the job was done correctly."

Eleanor C on February 2026

Avatar for Trim-Tek Plumbing

Trim-Tek Plumbing

4.83(
6
)
•Approved Pro

Trim-Tek Plumbing

4.83(
6
)
•Approved Pro
Customers say: Quality work
24 years of experience
Free onsite estimate

Our team can fully service your plumbing needs, no matter the size or scope of the issue. We make our premier plumbing services reliable and affordable for everyone in the community. Our company understands times are tough, that is why we will work with you to find something that fits your needs and budget. We offer plumbing contracting, water heater repair, and sewer jetting. Same day service is available!!

"We were fortunate to employ Trim-Tek Plumbing to repair a leaking supply line in an upstairs bathroom. Although this project was not a dire emergency, there were visible water stains on the ceiling in the lower level. Eli arrived exactly on time, diagnosed the problem quickly, and repaired the leak in a short time. Eli was both professional and personable. If we encounter any future plumbing problems, we will contact Trim-Tek. Martin C."

Harold C on December 2025

Our team can fully service your plumbing needs, no matter the size or scope of the issue. We make our premier plumbing services reliable and affordable for everyone in the community. Our company understands times are tough, that is why we will work with you to find something that fits your needs and budget. We offer plumbing contracting, water heater repair, and sewer jetting. Same day service is available!!

"We were fortunate to employ Trim-Tek Plumbing to repair a leaking supply line in an upstairs bathroom. Although this project was not a dire emergency, there were visible water stains on the ceiling in the lower level. Eli arrived exactly on time, diagnosed the problem quickly, and repaired the leak in a short time. Eli was both professional and personable. If we encounter any future plumbing problems, we will contact Trim-Tek. Martin C."

Harold C on December 2025

Avatar for Once & Done Waterproofing Solutions, LLC

Once & Done Waterproofing Solutions, LLC

4.92(
53
)
•Approved Pro

Once & Done Waterproofing Solutions, LLC

4.92(
53
)
•Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 years of experience

At Once & Done Waterproofing Solutions, LLC, we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! With our new location in Martinsburg, WV we service Berkeley, Jefferson, and Morgan counties and our new location in Mercersburg, PA, we are happy to serve Franklin, Fulton, Adams, and Cumberland counties.

"Once & Done did a great job!"

Hugh L on August 2024

At Once & Done Waterproofing Solutions, LLC, we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! With our new location in Martinsburg, WV we service Berkeley, Jefferson, and Morgan counties and our new location in Mercersburg, PA, we are happy to serve Franklin, Fulton, Adams, and Cumberland counties.

"Once & Done did a great job!"

Hugh L on August 2024

All Aspects Waterproofing, LLC

4.80(
151
)
•Approved Pro

All Aspects Waterproofing, LLC

4.80(
151
)
•Approved Pro
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
22 local quotes requested

All Aspects Waterproofing provides quality work at competitive pricing throughout the Washington/Baltimore Metropolitan area with convenient offices located in Maryland and Virginia. MARYLAND Office 8735 Bollman Place # H Savage, Maryland 20763. VIRGINIA Office 11325 Random Hills Road Suite 360-A103 Fairfax, Virginia 22030. Call 866-999-3110 to Schedule your FREE Inspection and Estimate. Everyone at All Aspects Waterproofing looks forward to exceeding your expectations!

"I was very satisfied with All Aspects from my initial contact to the completion of the work. They were punctual, prodessional, proficient, thorough and it appears, my issue with the water is resolved."

Charlotte H on September 2023

All Aspects Waterproofing provides quality work at competitive pricing throughout the Washington/Baltimore Metropolitan area with convenient offices located in Maryland and Virginia. MARYLAND Office 8735 Bollman Place # H Savage, Maryland 20763. VIRGINIA Office 11325 Random Hills Road Suite 360-A103 Fairfax, Virginia 22030. Call 866-999-3110 to Schedule your FREE Inspection and Estimate. Everyone at All Aspects Waterproofing looks forward to exceeding your expectations!

"I was very satisfied with All Aspects from my initial contact to the completion of the work. They were punctual, prodessional, proficient, thorough and it appears, my issue with the water is resolved."

Charlotte H on September 2023

Avatar for GAC Services

GAC Services

4.86(
269
)
•Approved Pro

GAC Services

4.86(
269
)
•Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
27 local quotes requested

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"The technician that was tasked with the job was very knowledgeable and professional."

Kenneth B on January 2026

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"The technician that was tasked with the job was very knowledgeable and professional."

Kenneth B on January 2026

Avatar for Basement Gurus, LLC

Basement Gurus, LLC

4.85(
157
)
•Approved Pro

Basement Gurus, LLC

4.85(
157
)
•Approved Pro
Super Service Award
Customers say: Quality work
1005 local quotes requested
16 years of experience

Basement Gurus LLC, is a locally owned and operated company with over 20 years of experience. We specialize in professional waterproofing services. Our commitment is 100% guaranteed customer satisfaction on every project. Call us today, so that we can give you a free estimate and make your project come to life!

"Josh, the representative from Basement Gurus was outstanding! We had experienced a water issue in our finished basement. Josh thoroughly examined the interior and exterior of the home and determined that the leak might be plumbing related. Josh could have very easily exploited our ignorance and suggested a solution purely beneficial to his company that may not have addressed the underlying cause of the problem. Instead, he demonstrated his integrity by realistically assessing the situation even if it would jeopardize the sale. This is commendable particularly in this era where cutthroat business practices are commonplace. I highly recommend Basement Gurus. They are fortunate to have an employee like Josh who exhibits concern for the customer at such a high level. "

Don I on January 2026

Basement Gurus LLC, is a locally owned and operated company with over 20 years of experience. We specialize in professional waterproofing services. Our commitment is 100% guaranteed customer satisfaction on every project. Call us today, so that we can give you a free estimate and make your project come to life!

"Josh, the representative from Basement Gurus was outstanding! We had experienced a water issue in our finished basement. Josh thoroughly examined the interior and exterior of the home and determined that the leak might be plumbing related. Josh could have very easily exploited our ignorance and suggested a solution purely beneficial to his company that may not have addressed the underlying cause of the problem. Instead, he demonstrated his integrity by realistically assessing the situation even if it would jeopardize the sale. This is commendable particularly in this era where cutthroat business practices are commonplace. I highly recommend Basement Gurus. They are fortunate to have an employee like Josh who exhibits concern for the customer at such a high level. "

Don I on January 2026

Avatar for Appleton Campbell

Appleton Campbell

4.72(
304
)
•Approved Pro

Appleton Campbell

4.72(
304
)
•Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
11 local quotes requested

Call today for FREE Estimates for new heating and cooling systems, water heaters, water filtration and electrical panels and whole home generators. Founded in 1976 by Jim Appleton, grandfather of current President Mike Appleton—Appleton Campbell has remained a locally owned and operated business dedicated to their customers, employees and communities. Honesty, integrity, and experience are the cornerstones on which Appleton Campbell was built and on which it continues to grow today. Committed to outstanding customer service Appleton Campbell provides: - Highly trained technicians who treat you and your home with courtesy and respect - Flat-rate pricing—the price you are quoted up front is the price you will pay—there are no surprises - Guaranteed service and customer satisfaction

"At first, I thought it was a burst pipe from the week + freezing temperatures but I needed a garbage disposal replacement. They were very responsive. Codey, the technician, was very polite and professional. I was referred by a neighbor who has used them for years. I am very pleased with their service. Mary Collins"

Mary C on February 2026

Call today for FREE Estimates for new heating and cooling systems, water heaters, water filtration and electrical panels and whole home generators. Founded in 1976 by Jim Appleton, grandfather of current President Mike Appleton—Appleton Campbell has remained a locally owned and operated business dedicated to their customers, employees and communities. Honesty, integrity, and experience are the cornerstones on which Appleton Campbell was built and on which it continues to grow today. Committed to outstanding customer service Appleton Campbell provides: - Highly trained technicians who treat you and your home with courtesy and respect - Flat-rate pricing—the price you are quoted up front is the price you will pay—there are no surprises - Guaranteed service and customer satisfaction

"At first, I thought it was a burst pipe from the week + freezing temperatures but I needed a garbage disposal replacement. They were very responsive. Codey, the technician, was very polite and professional. I was referred by a neighbor who has used them for years. I am very pleased with their service. Mary Collins"

Mary C on February 2026

Avatar for Douglas & Son Services

Douglas & Son Services

4.78(
18
)
•Approved Pro

Douglas & Son Services

4.78(
18
)
•Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
8 years of experience

Douglas Plumbing, Heating & Air Conditioning, LLC, a Maryland limited liability company, trading as Douglas & Son Services (hereinafter referred to as “Douglas & Son Services”) specializes in, but is not limited to, providing residential and light commercial plumbing, gas, heating and air conditioning services in Washington, D.C., Maryland and Virginia

"Charles and Kevin were outstanding! We were very impressed by the notifications to allow us to know precisely when they would arrive. They were very clear throughout the process on what was required, what the process itself entailed, the cost, and how much time was estimated for the project. In addition, they were very professional and friendly! We would highly recommend Charles and Kevin!"

David S on January 2026

Douglas Plumbing, Heating & Air Conditioning, LLC, a Maryland limited liability company, trading as Douglas & Son Services (hereinafter referred to as “Douglas & Son Services”) specializes in, but is not limited to, providing residential and light commercial plumbing, gas, heating and air conditioning services in Washington, D.C., Maryland and Virginia

"Charles and Kevin were outstanding! We were very impressed by the notifications to allow us to know precisely when they would arrive. They were very clear throughout the process on what was required, what the process itself entailed, the cost, and how much time was estimated for the project. In addition, they were very professional and friendly! We would highly recommend Charles and Kevin!"

David S on January 2026

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FAQs for sump pump or interior foundation drains installation projects in Knoxville, MD

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 Knoxville, MD 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.

See all articles