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Basement Sump Pumps2026-10-28T15:56:09-05:00

Sump Pump Installation, Repair & Maintenance in [Target Location]

A reliable sump pump is an important part of a complete basement waterproofing system, helping clear groundwater before it can flood your basement or crawl space. NV Waterproofing and Foundation Repair installs dependable sump pump systems built to protect your home right when you need them.

What Is a Sump Pump and How Does It Work?

A sump pump is an automatic pump installed in a sump basin or pit at a low point in your basement. Its job is to remove groundwater collected by your basement drainage system before that water can reach your living space.

As water drains into the sump basin, the water level rises until a float switch kicks the pump on automatically. The sump pump then pushes the water through a discharge line to a safe location away from your foundation. Once the water recedes to a safe level, the pump shuts off until it's called on again.

Together, the drainage system and sump pump help keep your basement dry through heavy rain, rising groundwater and changing water-table conditions.

Symptoms

Do You Need a Sump Pump? Signs to Watch For

You may need a sump pump if your basement has flooded, lets in water after heavy rain or often feels damp or smells musty. Homes with recurring groundwater problems or a high water table are particularly likely to benefit from a sump pump system.

Paired with the right basement drainage system, a sump pump gives groundwater a controlled path before it reaches the basement floor. The drainage system collects and directs the water into the sump basin, where the pump automatically removes it and carries it safely away from your foundation.

Our Sump Pump Solutions

  • For keeping your basement dry on a daily basis

    Primary Sump Pumps

    A primary sump pump is the main pump in a basement waterproofing system, delivering everyday protection from groundwater and basement seepage. Installed inside the sump basin, the submersible pump automatically removes water collected by your perimeter drainage system and carries it safely away from your foundation.

    • Activates automatically as water rises in the sump basin
    • Submersible design keeps the pump housed inside the sump basin
    • Works alongside perimeter drainage to collect and remove groundwater
    • Engineered for reliable, everyday operation
    • Professional installation includes proper discharge routing and system setup

  • For protection when your primary pump can't keep up

    Battery Backup Sump Pumps

    A battery backup sump pump provides a second layer of protection if your primary sump pump loses power, fails or falls behind on incoming water. That’s especially worth knowing because heavy storms and power outages have an annoying habit of happening at the same time.

    A battery backup is especially valuable for homes with a history of basement flooding or frequent groundwater intrusion.

    • Operates when household power goes out
    • Provides backup if the primary pump fails or becomes overwhelmed
    • Automatically activates when needed
    • Adds protection for your basement during severe weather
    • Can be paired with an alarm to let you know when the backup system activates

  • For the most complete sump pump solution

    Combination Sump Pumps

    A combination sump pump system puts a primary sump pump and battery backup together to offer protection during everyday conditions, power outages, pump failure and times of unusually high water volume. The primary pump manages everyday groundwater, while the backup is standing by to take over when needed.

    For homeowners who count on a sump pump to keep their basement dry, a combination system offers added protection without leaning on a single pump.

    • Two pumps working as one system
    • Protection during routine conditions and power outages
    • Additional pumping capacity during periods of heavy water intrusion
    • Switches to backup protection automatically when needed
    • Alarm options provide another layer of system monitoring

  • For added defense against basement flooding

    Sump Pump Alarms & Monitoring

    A sump pump alarm lets you know when water in the sump basin goes above its normal level or the system needs attention. Depending on the system installed, monitoring options can help you catch a potential problem before rising water becomes a flooded basement.

What Makes a Reliable Sump Pump System?

Sump Pump Basin

The basin, or sump pit, collects water from the perimeter drainage system and provides the pump with a controlled place to operate. A durable liner and sealed cover help keep debris, odors and humidity from entering your basement.

Float Switch

The float switch signals the pump when it’s time to turn on. As water rises inside the basin, the float triggers the pump automatically. When the water falls to a safe level, the pump shuts off.

Check Valve

A check valve keeps water from running back into the sump basin after it has already been pumped out. Without one, the pump may have to pump the same water again and again, creating unnecessary wear.

Discharge Line

The discharge line routes water from the sump pump to a safe location away from your foundation. Where it ends matters. The goal is to keep pumped water from soaking right back into the soil around your home.

Airtight Sump Pump Cover

A sealed cover keeps the sump system closed off while helping reduce basement humidity, odors and debris. It also delivers a cleaner finished look and prevents objects from accidentally falling into the basin.

Sump Pump Alarm

A high-water alarm notifies you if the water inside the basin reaches an unusual level, giving you time to respond if the primary pump loses power, fails or falls behind on incoming water.

Perimeter Drainage System

A sump pump can only remove the water that reaches it. That’s why it should be paired with a perimeter drain system that captures groundwater around the basement and channels it into the sump basin.

Expert Sump Pump Installation, Repair & Maintenance

A sump pump only protects your home when the entire system is working properly. As basement waterproofing specialists, NV Waterproofing and Foundation Repair ensures your pump, drainage, basin, discharge line and backup protection work together to help keep your basement dry.

We also provide sump pump repair, replacement and maintenance. If your pump runs nonstop, makes strange noises, struggles to remove water or fails to activate reliably, our team can inspect the system and recommend the right solution.

Benefits

The NV Waterproofing and Foundation Repair Difference

Homeowners throughout [Target Location] trust NV Waterproofing and Foundation Repair for waterproofing solutions built around their home's actual water problem. From installation to ongoing maintenance, we stand behind our systems and the work we do. And most importantly, if something isn't right, we'll make it right.

What To Expect

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Customer Information

Don't just take our word for it

See what our customers have to say about our work.

NV Waterproofing was extremely responsive and 100% committed to identifying our water problem and designing a solution. Their work was excellent. The crew was on time and organized. They were very careful to protect the exterior landscaping and the interior of our home from dirt and debris. Even two years later, they responded to a sump problem at no additional charge. NV Waterproofing does the job right and stands behind its work.

Mike and Lynn F. | Columbia, MD

We bought a house in a state of disrepair, and so we've had to work with a number of contractors. I'd rank this company at the top of the list for their professionalism, knowledge, experience, and honesty. We had bowing of our basement walls that needed to be addressed. Michael came out to assess the situation, and gave us some options. After speaking with him, I felt very confident in their ability to buttress our walls. It was also a huge bonus that we were able to set up a payment plan for this job too. When the team showed up, Casey, Kevin, and Grant, they were super polite and professional. They took great care of our property, and if they had a question about anything, they asked. Also, if I had a question, Casey (the foreman), was very knowledgeable and quick to answer. They presented the work as they progressed through the job, and really, I was actually a little blown away by the scale of the project, and the speed at which they worked. What an impressive job they did! We're very confident in the work they did and will hire them again.

Ellen M.  | Takoma Park, MD

We were referred to NV Waterproofing from my brother-in-law who used them and was pleased. They came out and gave us an estimate - they were very prompt. We had the work done - it looked great and I am sure will do the job (only time will tell). We did have a miscommunication with the work (mostly on our part), but the owner had it fixed promptly and without additional cost. I would highly recommend them to anyone with water issues in their basement.

Susan C. | Washington DC, DC

NV stuck with me and made sure I was happy. Roberto Jr kept me calm as my problem persisted and kept working on a solution beyond the obvious. I highly recommend. Looking forward to a dry basement this summer.

Dean R. | Washington, DC

I am writing this letter to commend members of your organization for the waterproofing work performed on and around the foundation of my house. Despite situations beyond the control of both me and your associate, he always maintained professionalism and demonstrated why he is an outstanding representative of your organization. The crew obviously knew what had to be done and went about doing it. They were prompt in arriving at work each day, diligent in the performance of their duties (in spite of high heat and humidity), and took measures to ensure the safety around the excavated area (important because of children in the neighborhood). Unlike other construction sites I have seen, the crew maintained the area free of litter— no small measure these days! In addition, the crew always provided clear explanations of the work to be done each day, answering the questions with forthright and clear responses, never hurrying the discussion. As I was not on site while work was being done, they called me several times, taking those extra steps to keep me informed of the status of the work and aware of the tasks yet to be performed— something that is greatly appreciated. I would appreciate it if you would offer my heartfelt thanks to your able crew for the quality waterproofing work performed and the excellent communication and coordination exhibited by them.

Myra L. | Washington, DC

In my 12 years of having NV Waterproofing as a business partner, they have always proved reliable and trustworthy. They are a great value for me and my customers.

Darryl O. of Brookfield Homes, | Washington, DC

Great professional service and able to respond in timely manner to the project need.

Blake B. | Washington, DC

Brendan was very knowledgeable, professional and courteous. Highly recommend.

Cesar T. | Arlington, VA

A brief note to thank NV Waterproofing for extreme professionalism and courtesy in the manner in which my recent basement water seepage problem was addressed. From the initial contact with Jim, through the work with Roberto, Carlos and Jose, it was an overall pleasant experience – not to mention my contact with the owner and his responsiveness.

Ramesh T. | Arlington, VA

These guys were amazing. The initial visit was smooth, not pushy at all and he was even able to accommodate the relocation of a small drainage pipe. The demo to install the system was done beautifully, yes it was really good, you can tell they were precise and careful when doing so. Everything was clean, no stains on my carpet and they protected everything. No leak so far and I love it. Did I mention the price was excellent? I had 3 other companies to estimate thousands and even tried to sell extra unnecessary equipment. Thank you NV Waterproofing I have and will continue to recommend you.

Chelly Z. | Falls Church, VA

We appreciated NV Waterproofing's honesty and the men who worked tirelessly in uncomfortably cold weather. We've had one big storm since they finished and the basement walls are nice and dry. Nice work!

Peter V. | Falls Church, VA

Mauricio and Cristian were the initial sales reps who came to examine the issue and they took the time to test drainage that might have potentially been creating the water issue. They offered a reasonable solution (sealing the visible cracks and holes in the concrete) and I was contacted within a couple of days with an estimate and scheduling options. Sean was our tech and he did a fantastic job diagnosing the issue beyond just the cracks. He not only address all the holes and cracks in the concrete and mortar, he sealed up additional entry points above the foundation. He sourced additional materials to cover openings for cable lines. He went above and beyond and gave us measured information on how we should continue to monitor and treat this area as the house settles. He was thorough, informative, and provided excellent service in his work. I'm very glad that Sean was the technician sent to us and I would specifically request him for your projects.

Sara T. | Falls Church, VA

Before & after photos

Check out before and after photos from some of our completed projects.

  • Sunken Concrete Step Repair in Stephens City, VA

    This Stephens City, VA homeowner was dealing with a sunken concrete front step that had settled over time, creating an uneven entryway and a noticeable tripping hazard near the front door. Sunken concrete steps can make everyday foot traffic unsafe for homeowners, guests, and delivery drivers, while also taking away from the home’s curb appeal. Our concrete repair team lifted and leveled the front step back to its proper position, creating a safer, more stable walkway and entrance. This concrete step repair helped reduce the risk of falls, improved the look of the front entry, and gave the home a cleaner, more welcoming appearance. The homeowner was thrilled with the outcome — a big transformation that improved both safety and curb appeal!

  • Basement Waterproofing in Winchestor, VA

    A homeowner in Winchester, VA, was struggling with a failing sump pump that couldn’t keep up during heavy rainstorms, leaving their basement vulnerable to water intrusion. The lack of a reliable backup system also left them worried about potential flooding during power outages. Frustrated and seeking a dependable solution, they contacted NV Waterproofing and Foundation Repair, a trusted basement waterproofing company in Winchester, VA.

    After assessing the situation, we replaced their old sump pump with a state-of-the-art TripleSafe Sump Pump system. This advanced system includes three levels of protection: a primary pump, a secondary pump for heavy water flow, and a battery backup to ensure the basement stays dry even during power outages. The homeowner now has peace of mind knowing their basement is fully protected, no matter the weather.

  • Pool Deck Leveling in Manassas, VA

    A homeowner in Manassas, VA, quickly realized their dream backyard pool was at risk when the surrounding concrete pool deck began to show serious problems. Uneven and sunken slabs created tripping hazards and unsightly cracks, making both safety and aesthetics a challenge for anyone using the space. Additionally, water from rain and pool use was pooling in low spots, causing slippery surfaces and further soil erosion beneath the deck. These issues not only threatened the safety of family and guests but also compromised the value and enjoyment of the home.

    Seeking an effective solution, the homeowner reached out to our team for a professional assessment. We identified the main cause of settlement: soil erosion under the slabs—a common issue in Manassas due to its clay-rich ground and fluctuating moisture. To address both the immediate hazards and prevent future damage, we recommended our two-part approach: the cutting-edge PolyLevel® concrete leveling system and NexusPro® Joint Sealant.

    The repair process began with drilling small holes into the affected concrete slabs, allowing us to inject high-strength PolyLevel® polyurethane foam beneath the surface. As the foam expanded, it filled voids, stabilized the soil, and gently lifted the slabs back to their original positions. The process was quick, clean, and minimized disruption, giving the pool deck a level, safe surface once again. PolyLevel® foam is waterproof and lightweight, reducing the risk of future settling and ensuring long-term durability, even in a wet poolside environment.

    To provide further protection, we sealed all cracks and joints with NexusPro® Joint Sealant. This flexible, weather-resistant sealant prevents water from seeping beneath the slabs, protecting the soil and concrete from additional erosion. The result was a clean, finished appearance that not only improved the look of the deck but also safeguarded it for years to come.

    Thanks to modern concrete leveling technology, the homeowner’s pool deck was transformed from a liability into a safe and attractive outdoor gathering space. The project was completed in a single day, with minimal mess and immediate results, giving the homeowner peace of mind and renewed pride in their backyard. If you’re facing similar issues with your pool deck in Manassas, VA, the PolyLevel® system and NexusPro® Joint Sealant offer a fast, effective, and lasting

View All Before & Afters

Our service area

Proudly Serving Northern Virginia, D.C., and Suburban Maryland

Frequently Asked Questions

Should a sump pump be paired with a drainage system? 2026-10-08T14:03:19-05:00

Yes, in most basement waterproofing applications, a sump pump should be paired with a perimeter drainage system. The drainage system captures groundwater around the basement and routes it to the sump basin, while the sump pump clears that water from the home. Without adequate drainage, water elsewhere around the basement perimeter may never make it to the pump. 

Do you install sump pumps in crawl spaces? 2026-10-08T14:02:47-05:00

Yes. Crawl space sump pumps are designed to collect and remove groundwater beneath the home. They’re generally combined with crawl space drainage and encapsulation so the system addresses both standing water and moisture. This helps deliver a drier environment and protects floor joists, insulation and other materials from prolonged moisture exposure. 

What’s the difference between a primary and backup sump pump? 2026-10-08T14:02:19-05:00

The main difference is that a primary sump pump manages everyday groundwater, while a backup sump pump adds a second line of protection if the primary pump loses power, fails or can’t keep up. Together, they offer more complete protection than either pump alone. 

How long does a sump pump last, and when should it be replaced? 2026-10-08T14:01:31-05:00

There isn’t one replacement age for every sump pump. Lifespan depends on pump quality, how much it cycles, the amount of water it handles and how well it’s maintained. If your pump runs constantly, makes unusual noises, struggles to keep up with water or fails to activate reliably, it should be inspected before it fails completely. 

Do I need a battery backup sump pump? 2026-10-08T14:01:02-05:00

Yes, a battery backup is strongly recommended if your basement counts on a sump pump to stay dry. Severe storms can bring both heavy groundwater and power outages, the exact time you need your pump most. A battery backup takes over automatically if the primary pump loses power or is overwhelmed by incoming water. 

How does a sump pump work? 2026-10-08T14:00:32-05:00

A sump pump works by automatically removing groundwater collected in a sump basin and carrying it safely away from your foundation. Water from around or beneath the foundation is typically directed into the basin through a basement drainage system. As the water rises, a float switch activates the pump. The pump moves the water through a discharge line and away from the foundation, then shuts off once the water falls to a safe level. 

How much should I expect to pay for sump pump installation in [Target Location]?2026-10-08T13:59:27-05:00

Sump pump installation costs depend on which system is installed, whether an existing sump basin is present, discharge needs, the addition of a battery backup and if a drainage system needs to be installed. Across the U.S., estimates often range from about $500 to $4,000, with an average of roughly $1,400. For accurate local pricing, NV Waterproofing and Foundation Repair provides a free inspection and written estimate.

Related pages

Service Areas

NV Waterproofing has locations throughout Northern Virginia, D.C., and Suburban Maryland.

Resources

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Our Promise

At NV Waterproofing, we pride ourselves on providing permanent solutions, and stand behind our work with industry-leading, fully transferable warranties and guarantnees.

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