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
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
Peaceful streets, well-kept homes, and proximity to the Great South Bay make Brightwaters, NY, one of Long Island’s most desirable places to live. But for many homeowners here—especially those near Brightwaters Canal, Ackerson Boulevard, or Lakeside Drive—the charm comes with a hidden risk: persistent groundwater pressure, moisture in crawl spaces, and seasonal flooding that puts basements and foundations under stress.
The signs may start small: a damp smell after rain, patches of white efflorescence on the wall, or an overworked dehumidifier that never seems to keep up. Left untreated, these symptoms can weaken your foundation, lead to mold growth, and diminish your home’s long-term value.
That’s where ACM Basement Waterproofing comes in. We help Brightwaters homeowners protect their homes from the ground up with custom-designed systems—including French drains, sump pumps with battery backups, crawl space waterproofing, and foundation crack repair. Every job starts with a free inspection, and a lifetime transferable warranty backs our work, so you can enjoy the waterfront lifestyle without the worry of what’s happening below it.
Customer reviews from Brightwaters coming soon! In the meantime, take a look at our testimonials page for reviews from customers from other towns.
A small leak in your basement might seem harmless initially, but it can quickly snowball into more significant problems like mold growth, wood rot, and insect infestations. Plus, the longer the water seeps in unabated, the more expensive the damage becomes to fix. Waiting to fix the issue can quickly cost you a pretty penny.
But not all is lost. ACM specializes in comprehensive basement waterproofing in Brightwaters. We install interior French drains beneath your basement floors. These drains collect water before it reaches the surface and direct it to a sump pump that efficiently moves it away from your home.
With ACM’s solution in place, you can rest easy—even when the weather turns stormy—knowing your basement is fully protected from water damage. Reach out to us today to get started.
Beyond just waterproofing, ACM also offers expert solutions for foundation cracks. While vertical cracks are often just a sign of settling, horizontal or stair-step cracks can indicate more serious structural issues, such as bowing walls. This is an issue that you need to have fixed by expert.
Our Brightwaters foundation repair team uses advanced techniques like carbon fiber strap reinforcement to stabilize your foundation walls. These straps are bonded to the wall, preventing any further movement and ensuring your foundation stays strong and secure.
If you are dealing with foundation issues, we can help. We often find that a home with foundation issues has basement water problems, and vice versa, which is why we specialize in bother services.
If your Brightwaters home has a crawl space, you are not safe from water intrusion. If water finds its way into your crawl space, it can lead to moisture buildup, mold, and other serious issues.
Luckily, the fix is straightforward. Like in a basement, by installing an interior French drain system paired with a sump pump, we can effectively remove any water and channel it far away from your home. This setup ensures your crawl space remains dry and protected, giving you one less thing to worry about.
ACM has become Brightwaters’s trusted name for crawl space waterproofing, so if you’re facing water issues, don’t hesitate to reach out.
At ACM Basement Waterproofing, we transform foundation repair into an efficient, worry free process. We work closely with you, delivering thorough, clear guidance and innovative solutions that ensure long-term protection for your home. Your peace of mind is our priority.
Village of Brightwaters Municipal Building
Phone: 631-665-1280
Fax: 631-665-2830
Location: 40 Seneca Drive, Brightwaters, NY 11718
Office Hours: Monday through Friday, 9:00 AM to 4:00 PM
Brightwaters, NY Links:
Village of Brightwaters Municipal Building
Village of Brightwaters Building Department
Here is a list of helpful contractors for your other Brightwaters home projects. We do not endorse any of these companies but we do want to give you a head start in your next project!
Plumber
Wilson’s Plumbing Heating HVAC & Electric
1062 Udall Rd, Bay Shore, NY 11706
631-855-5832
Electrician
Allways Electric Corp.
262 Orinoco Dr, Brightwaters, NY 11718
631-666-0477
Driveway Paving Contractor
Royal Pavement Solutions
2 W Beech St, Islip, NY 11751
844-777-7924
Landscaper
BrightView Landscapes
70 Moffitt Blvd, Bay Shore, NY 11706
631-666-0628
Masonry
Flawless Masonry
33 Ridge Rd, Smithtown, NY 11787
631-366-3512
In Brightwaters, crawl space issues are more common than you might think — and the damage they cause isn’t always visible. At ACM, we specialize in full crawl space encapsulation, sealing out moisture and improving air quality throughout your home. Whether you’re dealing with musty smells or worried about long-term structural damage, we offer expert inspections and real solutions that last. Let’s get your crawl space under control and protect your Brightwaters home from the ground up.
Whether you’re dealing with water in your basement, foundation cracks, or crawl space moisture, ACM has you covered. Homeowners in Brightwaters have relied on us for years to provide reliable and long-lasting solutions.
Contact us today at 631-581-0600 to schedule a free inspection and estimate. Let us help you protect your home!
We make it simple, affordable, and stress-free — with guaranteed results.
