The Problem
A homeowner in Flushing was dealing with poor drainage around their property. Water was not flowing away as it should, and pooling was starting to form near the foundation.
During our inspection, we found that the existing Schedule 40 PVC pipe was still in good condition and not clogged. This told us the issue was not with the pipe itself. The real problem was the underground dry well system. It was no longer working and was likely either clogged or collapsed.
Because the dry well had failed, water had nowhere to go. This caused a buildup in the drainage system and increased the risk of water reaching the foundation and basement.
The Solution
Our team at Zavza Seal focused on replacing the failed dry well system while keeping the rest of the structure intact.
We started by carefully cutting and removing one section of the existing concrete surface. Our goal was to limit disruption and avoid unnecessary demolition. Once the area was opened, we excavated the ground to a depth of about 6 to 7 feet to prepare for the new system.
At the base of the excavation, we installed a 12-inch layer of gravel. This base is very important because it helps with drainage and supports the dry wells. The gravel was compacted properly to prevent shifting or voids in the future.
We then installed two 50-gallon dry wells. These were connected to each other to increase the system’s capacity and improve water distribution underground. The existing PVC pipe was connected to the new dry well system at a high point to allow proper water flow into the wells.
After installation, we backfilled the area and compacted the soil carefully to ensure long-term stability.
To complete the project, we installed a new reinforced concrete slab with 4,000 PSI strength. While the new concrete may look slightly different from the old surface, it provides strong and durable protection for the system below.
The Result
The new dry well system is now fully functional and able to handle water flow effectively. Water is being directed away from the property as intended, reducing the risk of pooling and foundation damage.
By keeping the existing pipe and replacing only the failed components, we provided a cost-effective solution without unnecessary work.
Why This Solution Works?
Dry wells play a key role in managing groundwater and stormwater. When they fail, even a working pipe system cannot prevent water buildup.
Installing multiple dry wells increases capacity and improves performance, especially in areas with heavy rainfall or dense soil. A properly prepared gravel base and careful compaction ensure the system remains stable for years.