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Retrofit Old Stormwater Drainage Systems in Connecticut
Is your property's drainage system outdated or underperforming? At CT Stormwater Authority, we specialize in retrofitting stormwater systems with modern components like CULTEC Contactor® and Recharger® chambers, inspection ports, and sediment filtration. As Connecticut’s only CULTEC Certified Maintenance Provider, we bring industry-leading expertise and field-proven experience to every project.
Why Retrofitting Your Stormwater System Matters
- Prevents yard flooding and foundation damage
- Improves overall runoff efficiency using CULTEC StormFilter® T-80 filtration
- Adds inspection ports for easier access and maintenance
- Integrates modern geo-textile fabric and crush-resistant French drain pipes
- Helps comply with local stormwater mandates in Greenwich, Stamford, Darien, and Riverside

Areas We Retrofit Stormwater Systems
Our retrofit services are trusted by homeowners and builders in Greenwich, Darien, Stamford, Westport, Riverside, New Canaan, Rye, and White Plains. Whether it’s a residential yard or a commercial property, we help modernize your subsurface drainage infrastructure for long-term protection.
Custom Retrofit Solutions With CULTEC Technology
We evaluate soil conditions and existing infrastructure before implementing retrofits. Using dry well systems, infiltration chambers, and downspout tie-ins, we tailor each solution to fit your exact drainage needs. With Frank Heneghan’s proven install process, no detail is overlooked — from gravel depth to pipe pitch.
Schedule Your Stormwater Retrofit in Connecticut
Ready to improve the efficiency and safety of your outdated drainage system? CT Stormwater Authority offers premium, code-compliant stormwater retrofits that boost property value and prevent costly water damage.
Retrofitting Old Stormwater Drainage System in Connecticut
Upgrade Your Aged Stormwater Drainage System in Harrison & Riverside
An old stormwater drainage system might not meet the needs of today’s rainwater problems. Improvements should be made to ensure your drainage system is well-fit for current situations. This is why Connecticut Stormwater Authority offers to retrofit old stormwater drainage systems for residential and commercial property owners. We can make your existing drainage system perform better and easier to maintain.
Today, drainage design patterns have evolved to address stormwater problems with more efficiency. As the exclusive “CULTEC Certified Maintenance Provider” of Connecticut, we can retrofit your drainage system layout to improve its functionality. Additionally, we have been installing CULTEC certified quality stormwater management systems including Contactor & Recharger chambers in Riverside, Greenwich, Fairfield, Darien, and more since 2003. Hence, We are recognized as the only “CULTEC Certified Installer” in Connecticut.

Why Choose Connecticut Stormwater Authority LLC for Retrofitting?
- Operated by HAAG Engeering Professionals
- CULTEC Certified Installer
- CULTEC Certified Maintenance Provider
- Emergency Services Available 24/7