April 30, 2026
Designing Dual‑Purpose Stormwater Systems for Irrigation and Compliance
Stormwater systems are no longer single‑function infrastructure.
Today’s sites demand solutions that meet regulatory requirements and provide ongoing operational benefits. One of the most effective strategies is designing dual‑purpose stormwater systems that manage runoff while supporting irrigation reuse.
The Shift from Single‑Use to Multifunctional Design
Historically, stormwater detention systems were designed solely to control peak discharge rates. Once installed, their function was largely invisible and passive. However, as space constraints and water scarcity intensify, owners and engineers are rethinking this approach.
Dual‑purpose designs allow one underground system to:
- Detain or retain runoff
- Store water for reuse
- Support site irrigation needs
- Adapt to changing regulations
Why Early Planning Matters
The ability to reuse stormwater depends heavily on early design decisions. Storage volume, system layout, and access for pumping and treatment all influence whether reuse is feasible later.
Planning for irrigation reuse at the outset enables:
- Efficient system sizing
- Reduced need for separate storage tanks
- Better coordination with irrigation designers
- Lower overall construction costs
StormCapture® as a Versatile Platform
Oldcastle Infrastructure’s StormCapture® is engineered to support detention, retention, infiltration, and harvesting within a single modular system. This flexibility allows engineers to design stormwater systems that meet regulatory flow control requirements while also storing water for reuse.
When configured for irrigation support, StormCapture can:
- Store stormwater below grade without consuming surface space
- Integrate seamlessly into treatment trains
- Scale storage capacity as site needs evolve
- Available in watertight IAPMO approved configurations
This adaptability makes it easier to design systems that serve both short‑term compliance and long‑term water management goals.
Performance, Flexibility, and Future Readiness
Dual‑purpose systems provide resilience. As irrigation demands change, water rates rise, or reuse requirements increase, modular stormwater storage can adapt without major reconstruction.
By combining performance and flexibility, StormCapture helps projects move beyond basic compliance toward smarter, more efficient site infrastructure.
Learn more
- Discover the benefits of StormCapture
- Read our StormCapture Brochure
- Launch our Online Design Tool
- Request a Lunch & Learn
