Standing water, soggy lawns, and flooded basements are common problems on Long Island — and they don't fix themselves. Cardi Design & Build's drainage specialists diagnose the root cause of your water management issues and install permanent solutions that protect your property and landscape investment.
We install French drains, dry wells, catch basins, and channel drains, and we perform full-property grading to correct slope issues that allow water to pool near your foundation. Every drainage solution is designed specifically for Long Island's soil conditions, water table, and local code requirements.
Get a Free AssessmentA perforated pipe buried in gravel that intercepts and redirects groundwater and surface runoff away from problem areas. The most effective solution for wet lawns, soggy planting beds, and water near foundations.
An underground chamber that collects and slowly disperses water into the surrounding soil. Ideal for managing downspout discharge, sump pump output, and surface runoff on properties with limited outlet options.
A comprehensive property evaluation that identifies all drainage issues, maps water flow patterns, and produces a complete drainage plan. Ideal for properties with multiple problem areas or persistent flooding.
Long Island's clay-heavy soil has poor drainage capacity, and many areas have a naturally high water table. Combined with heavy rainfall, this creates standing water and soggy lawns. French drains and dry wells are the most effective long-term solutions.
French drains are typically installed 18–24 inches deep, sloped at a minimum 1% grade to direct water away from problem areas toward a dry well, storm drain, or daylight outlet.
Dry wells over a certain capacity require permits from Nassau or Suffolk County. We research all local requirements and handle permit applications as part of every drainage project.
Most residential drainage projects — including French drain and dry well installation — complete in 1–3 days. Larger grading projects or full-property drainage systems may take longer.
We'll visit your property, assess your drainage issues, and recommend the most effective permanent solution — no obligation.