Shop
HydroBlox – Stormwater Retention Box / Catch Basin
Made in USA with 100% Post Consumer Recycled Materials!
HydroBlox Stormwater Retention Boxes were designed to address one of today's most pressing environmental issues - Stormwater Management!
As rainwater lands on rooftops, driveways, yards, industrial sites, and roadways, it collects pollutants and sediment before flowing into storm drains. These systems ultimately discharge into our streams, lakes, rivers, and oceans, threatening ecosystems and water quality.
The development of green infrastructure and stormwater mitigation techniques on private property is a problem that now has a green solution.
HydroBlox Stormwater Systems are a superior alternative to typical drywells or trenches. A hollow box is constructed from HydroPlanks. One end is capped with HydroBlox and the other end attaches to a downspout. Due to its porous, high-void composition, it's an efficient, non-compressible product that will release stormwater into the water table at the same rate as undeveloped soil.
A typical 100 square foot trench for a drywell is reduced to a 40 square foot HydroBlox Stormwater Box that is installed without aggregate or geotextile. Excavation requirements are significantly scaled down and the installation cost is reduced by over 60%!
Sizing the HydroBlox Stormwater System is simply a matter of adding additional boxes allowing for an unlimited size of stormwater applications.
Superior Infiltration and Discharge Control:
HydroBlox Stormwater Retention Boxes not only infiltrate but also direct excess water with precision via integrated flow paths, allowing for controlled discharge or redirection-something traditional dry wells can't manage without pumps or overflow systems. The impact of un-managed stormwater runoff is significant, contributing to erosion, flooding, and the spread of contaminants. As a result, municipalities across the U. S. are increasingly enforcing compliance with NPDES (National Pollutant Discharge Elimination System) and MS4 (Municipal Separate Storm Sewer System) regulations to mitigate environmental damage.
Highlights
- Superior infiltration and controlled discharge - HydroBlox Stormwater Retention Boxes go beyond infiltration, they offer precise control over water movement through integrated internal flow paths, this design allows for efficient redirection or managed discharge of excess water without the need for pumps or complex overflow systems, unlike traditional dry wells, which often rely on passive infiltration and are limited in saturated or high-flow conditions, the HydroBlox platform provides reliable performance and flow control, even in challenging environments
- Fast, simple installation - Traditional dry wells often require extensive excavation, heavy machinery, and multiple components such as stone, pipe, and filter fabric, in contrast, HydroBlox Stormwater Retention Boxes are lightweight, modular, and easy to handle-dramatically reducing labor, installation time, and overall project costs, reliable performance in all soil conditions unlike dry wells, that fail in clay or compacted soils due to poor infiltration, hydroblox boxes continue to perform by moving water laterally and vertically through an open-structure design, this ensures consistent drainage regardless of soil type or environmental conditions
- Efficient, maintenance-free water management - Each Stormwater Retention Block is engineered to hold up to 55 gal. of water, providing temporary storage that allows the surrounding soil to dry out before gradually recharging the aquifer, designed for versatility, they can be installed as standalone hollow chambers or configured with an integrated flange to connect directly to a pipe system or downspout, ideal for small areas where water has nowhere to go.
Key Benefits
- Continuous flow with Zero Clogging: unlike traditional dry wells that often clog with sediment, HydroBlox Stormwater Retention Boxes feature advanced open-structure plastic technology that allows for continuous water movement-even under heavy or sustained loads.
- No gravel or filter fabric required: their innovative design eliminates the need for gravel beds or geotextile fabric, reducing labor and long-term maintenance requirements.
- Flexible Installation: perfect for tight or confined spaces, they provide a reliable solution for stormwater control in residential, commercial, and municipal settings.
- Sustainable: all HydroBlox products are manufactured from 100% Post Consumer Recycled plastic, specifically sourced from hard-to-recycle materials that would otherwise end up in landfills, this commitment to circular sustainability reduces environmental impact from the start... unlike stone-based dry wells that can degrade over time and require eventual replacement, HydroBlox Stormwater Retention Boxes are engineered for long-term performance, their exceptional durability makes them an ideal choice for green infrastructure, sustainable site development, and environmentally responsible stormwater management.

