Exploring The Types Of Stormwater Systems | ACO StormBrixx
Managing rainwater effectively is essential for protecting built environments and reducing the impact of heavy rainfall on natural waterways. A stormwater system plays a key role in achieving this, with different designs suited to different sites and requirements. In this article, we’ll look at how these systems work, why they matter and the most common types used today.
What is a stormwater system?
A stormwater drainage system is a network of structures designed to collect, transport and manage rainwater runoff. It helps move excess water away from roads, rooftops and other surfaces into appropriate drainage points or areas where it can be stored, filtered or reused. It is especially important in commercial and industrial developments, where impermeable surfaces dominate.
The importance of effective stormwater drainage systems
In urban areas, natural infiltration is often limited due to concrete and paved surfaces. That’s why engineered stormwater drainage systems are necessary. They reduce flooding risk, help prevent erosion and support sustainable water practices by reducing the pressure on traditional sewer systems.
Common types of stormwater drainage system
Stormwater systems are generally classified into dry and wet (sealed) types. Each serves a specific purpose depending on the site layout and water flow requirements.
1. Dry systems
Dry stormwater systems are typically empty during dry weather. They are designed to direct rainwater from areas like yards and roofs to outlet points such as street kerbs, trench drains and other stormwater connection points. These connection points then discharge into the main stormwater network.
The system usually consists of surface grates or sumps positioned around the property to collect water. When the natural slope isn’t enough for gravity drainage, sump pumps or soakage pits may be used to help remove water from the area. Dry systems are simple and effective for sites with a reliable drainage fall.
2. Wet/sealed systems
Wet stormwater systems, also known as sealed systems, remain full of water after rainfall events. In this setup, rainwater flows from the roof into gutters and then through downpipes into a storage tank. If there are multiple downpipes, they may connect into a shared pipe which channels water into a riser pipe and into the tank.
The water level rises with each downpour. When the tank reaches full capacity, the excess water is directed to the stormwater outlet. These systems are ideal for rainwater harvesting, especially in properties where water reuse is a priority.
Choose ACO StormBrixx for your stormwater system
Whether you’re working with a dry or wet stormwater setup, the right system design can make all the difference in long-term performance and compliance. Modular solutions like ACO StormBrixx offer flexibility for a wide range of drainage requirements, from site applications to advanced detention and reuse systems.
ACO StormBrixx is engineered to help treat water ‘at source’ by managing runoff efficiently while supporting traffic loads and structural demands. Its open design also simplifies installation and maintenance, helping reduce ongoing costs for stormwater systems.
Discover our full product range of ACO StormBrixx solutions, where you’ll find detailed specifications and system capabilities, as well as step-by-step installation guides to ensure seamless on-site implementation. Need further assistance? Get tailored advice and technical project support from our team — allowing you to save time and reduce errors.
