Posted on Google Linda WeissTrustindex verifies that the original source of the review is Google. We feel very fortunate to have found this company. I met with Mike regarding leaks in the basement. He assessed the entire house, gave me options and clearly explained the process. Everyone from Mike, to the secretary in the office to the workers were absolutely amazing. They did the work as promised, gave us a reasonable price, and left the place immaculate. We could not be happier with the results! This is a great family owned business. You can’t go wrong!Posted on Google rose smithTrustindex verifies that the original source of the review is Google. The work was done with the utmost professionalism and competence. The service representative was very thorough in examining the dehumidifier, air purifier and sump pump and provided any service needed including draining the pump.Posted on Google Craig TodaroTrustindex verifies that the original source of the review is Google. Mark took it upon himself to come to my home and examine my issue himself. He is knowledgeable not only in basement waterproofing, but also in land grading, excavating and several other adjacent topics. While it was concluded my issue was not foundation oriented, he did not hesitate to propose several other creative ideas to help address my issue. He has a great disposition, and I would not hesitate to recommend his services to others.Posted on Google Linda RussoTrustindex verifies that the original source of the review is Google. I bought my house 24 years ago, and for 24 years I lived with water coming in to my finished basement. A few years back I hired another company to put in a French Drain System which never worked. As the storms got worse the water in my basement increased. Because of my previous experience I was hesitant to hire another company until I read about ACM and met Mark who was highly recommended by my Home Service Company. Mark spent about 2 hours explaining the process, and what was needed. In February 2025 ACM put a extensive French Drain System which included taking down the sheet rock walls, demoing tile and placing a membrane along the whole perimeter of the drain system. All of this work was completed in 3 days exactly what Mark said. The guys were professional, polite, and best of all they were careful to save my Radiant Heating System which was under the tile. Since the French Drain System was placed I have not had 1 drop of water coming into my basement. I am very grateful to Mark's ACM Company, and was able to refinish my basement without fear of water damage. I highly recommend ACM Basement Water Proofing to all who are having water problems with their basement.Posted on Google Maria LacosteTrustindex verifies that the original source of the review is Google. ACM Basement Waterproofing did an excellent job in my basement, no more water intrusion. The job was handled professionally and on time. I am happy to recommend them.Posted on Google William RothsteinTrustindex verifies that the original source of the review is Google. I chose ACM because of their "Best of Long Island" award, and I'm glad I did. Mark's crew (led by Joe) installed an interior French drain and a sump pump in our basement. Six months later, we've had no problems with water. These guys know what they're doing.Posted on Google Links2282Trustindex verifies that the original source of the review is Google. My wife and I would like to say thank you to Mark and his team for their excellent work installing a French Drain in our finished basement. For years we had to worry about flooding if we got a large amount of rain in a short time. The entire staff was totally professional. knowledgeable, competent and efficient. They were clean and caring and after each day they protected the whole worksite. Without a doubt, we would recommend them for all your basement waterproofing needs.Posted on Google Peter WebbTrustindex verifies that the original source of the review is Google. I called acm after finding water in the basement. Mark answered the call and quickly helped diagnose the issue. He guided me to check baseboard and sure enough a broken valve was causing this leak. It's good to find someone to help a homeowner without rushing to take their money. It's good to find a honest business man
Basement Water Solutions
A key part of basement waterproofing to keep your basement dry is a sump pump. ACM Basement Waterproofing is Long Island’s trusted contractor for expert sump pump installation in basement and crawl spaces. If you are dealing with basement water, give us a call.
We make it simple, affordable, and stress-free — with guaranteed results.
A sump pump is a crucial tool for keeping water out of your basement or crawl space—especially in flood-prone areas like Long Island. It’s a small pump installed in the lowest part of your basement, typically in a specially dug sump pit (sump basin).
When water collects in the pit—whether from rain, rising groundwater, or leaks—the sump pump automatically turns on and pumps the water safely away from your home’s foundation through an exterior discharge system.
For Long Island homeowners, a sump pump can be the difference between a dry basement and costly water damage. If you’re searching for “sump pump installation near me”, ACM Basement Waterproofing has the local expertise you can trust.
A professionally installed sump pump gives you peace of mind, knowing that your home is protected 24/7. If you’re wondering whether you need a sump pump or looking for “basement waterproofing near me” or “sump pump experts nearby,” ACM provides honest inspections and custom recommendations for homes just like yours.
If you live on Long Island, the answer is very likely yes. Our region’s high water table, coastal storms, and heavy seasonal rains put many homes at risk of flooding—especially those with basements or crawl spaces. Even if your basement has never flooded before, it only takes one major storm to cause serious damage.
A professionally installed sump pump gives you peace of mind, knowing that your home is protected 24/7. If you’re wondering whether you need a sump pump or looking for “basement waterproofing near me” or “sump pump experts nearby,” ACM provides honest inspections and custom recommendations for homes just like yours.
A sump pump is a highly effective system designed to protect your Long Island home from flooding and water intrusion.
The system begins with a sump pit (also called a basin), which is a hole dug at the lowest point of your basement or crawl space. This pit collects water that enters your home. Water naturally flows into the pit due to gravity, as it seeks out the lowest elevation.
Inside the pit sits the sump pump unit, which contains a float switch or sensor that detects rising water levels. Once the water reaches a predetermined height, the float switch is triggered, and the pump turns on automatically—no manual activation required. The pump then forces the water out of the pit through a discharge pipe, directing it away from your foundation and out to a safe drainage area.
To prevent backflow, most systems include a check valve on the discharge line. This ensures that water doesn’t re-enter the pit after it’s been pumped out.
In areas of Long Island where storms and Nor’easters can knock out power, a battery backup sump pump is often recommended. This system kicks in automatically if the primary pump fails or if the power goes out—providing continued protection when you need it most. Some setups even include combination systems with dual pumps or water-powered backup options for added peace of mind.
We install the Wayne F50CIS, a professional-grade cast iron submersible sump pump. It’s not cheap, but there’s a reason we use it.
This 1/2 HP pump has been tested to over 1 million cycles by an independent lab. The housing is epoxy-coated cast iron, not plastic, so it holds up to the moisture and humidity we deal with on Long Island. We’ve seen too many budget pumps rust out or fail after a few years. This one doesn’t.
The top suction design is a big deal. Most pumps pull water from the bottom of the pit, where sediment and debris collect. That leads to clogs. The F50CIS pulls from the top, which keeps it running and prevents air locks. It’s also a lot quieter than you’d expect.
It pumps up to 70 gallons per minute, runs on a vertical float switch, and fits any sump basin 11 inches or larger. Assembled in the USA.
When we show up, we’re not installing whatever was on sale at the hardware store.
Not sure if it’s time to install or replace a sump pump? Here are a few warning signs Long Island homeowners should watch for:
If you notice any of these signs and are looking for “sump pump services near me” or “waterproofing contractors nearby,” reach out to ACM Basement Waterproofing. We offer free inspections and can help you determine the right waterproofing solution for your Long Island home.
We make it simple, affordable, and stress-free — with guaranteed results.
Installing a sump pump in your Long Island home involves several key steps, all of which must be done correctly to ensure the system functions reliably—especially during storms or flooding events. While some homeowners search for DIY sump pump installation near me, the safest and most effective option is to work with a licensed professional like ACM Basement Waterproofing, who understands the unique soil and water conditions across Nassau and Suffolk Counties.
Here’s a step-by-step overview of how a sump pump installation typically works:
1. Choose the Right Location
The sump pit is installed at the lowest point of your basement or crawl space—where water naturally collects. A proper site selection ensures maximum water collection and drainage efficiency. In Long Island homes, this often means placing the pit near foundation walls or known trouble spots.
2. Excavate the Sump Pit
Using a jackhammer or concrete saw, the technician will break through the basement floor and excavate a pit roughly 2 feet deep and 18 inches wide. The pit must be deep enough to collect water but not so deep that it compromises foundation stability.
3. Install the Sump Basin
A heavy-duty sump basin (or liner) is placed into the pit. This basin helps prevent debris from entering the pump and ensures consistent water flow. The basin is surrounded with gravel to assist drainage and then sealed with concrete for stability.
4. Set the Sump Pump
The sump pump unit is installed inside the basin and connected to a float switch or sensor that activates the pump when water reaches a certain level. Homes in flood-prone Long Island areas often use submersible pumps, which sit fully submerged in water and are quieter and more efficient.
5. Install the Discharge Pipe
A discharge line is connected to the pump and routed out of the home, directing water away from the foundation to a designated drainage area of your yard. This may include a dry well, storm drain, or pop-up emitter. A check valve is installed on the pipe to prevent backflow.
6. Add a Backup System (Optional but Recommended)
For full peace of mind, especially in Long Island’s storm-prone zones, a battery backup or water-powered backup sump pump can be added. These systems kick in automatically during power outages or primary pump failure.
7. Test the System
Once installed, the entire system is tested to ensure proper operation, flow rate, and drainage. At ACM, we make sure everything is functioning perfectly before completing the job.
If you’re searching for “sump pump installation near me” or need help protecting your basement from water damage, ACM Basement Waterproofing offers expert sump pump installation across Long Island and nearby areas. We customize each system based on your home’s specific layout and risk level—so you can rest easy when the next storm hits.
A quality, reliable sump pump is an integral part of a basement waterproofing system. You need to have it installed by professionals with years of experience. AMC Basement Waterproofing has been providing basement waterproofing, and basement sump pumps to Long Island residents for decades, and we have been recognized and awarded for our work. Call today to get a sump pump installation quote.
We make it simple, affordable, and stress-free — with guaranteed results.
*50% Off Materials Discount applicable to new projects over $10,000
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