Diversion and Oil/Water Separation Solutions
Written by Anna Li - Stormwater360 Internal Sales Associate
Managing stormwater isn’t just about compliance; it’s about protecting our environment and preventing pollution before it reaches our waterways.
Diversion and Oil/Water Separation systems play a critical role in keeping hydrocarbons, oils, and other contaminants out of rivers, lakes, and harbours. From industrial sites to commercial developments, these systems provide reliable spill protection, reduce environmental risks, and help sites meet regulatory requirements, ensuring cleaner, safer water for our communities.
Benefits of Diversion and Oil/Water Separators:
- Protecting Waterways: Preventing hydrocarbons and oils from entering rivers, lakes, and harbours.
- Achieving Compliance: Helping sites meet strict environmental regulations.
- Reducing Risk: Minimising the chance of costly clean-ups and reputational harm.
- Volume reduction: only contaminated flow goes through the treatment system, therefore reducing the total cost for treatment infrastructure and ongoing operating costs.
Stormwater360 Diversion and Oil/Water Separator Solutions:
Fox™ Valves: Smart Diversion Technology
The Fox™ Valve system is a proven stormwater and trade waste diversion solution. Designed to divert washdown water and/or first flush stormwater to trade waste, it prevents polluted runoff from reaching downstream environments.
The Fox™ Valve line-up also includes systems like CMS600, which are designed to contain the hazardous flows in the event of a spill.
See the Fox™ Valve (FF600) in action at a livestock yard. Read the case study HERE.
Key Benefits of Fox™ Valves
- Easy Installation: Plug-and-play design for quick integration into stormwater systems.
- Versatile Applications: Engineered for larger sites (over 5m²) with three system options to suit site requirements and outcomes.
- High Performance: Handles flows up to 20 L/sec, diverting all contaminants to trade waste for effective stormwater protection.
- Durable & Reliable: Heavy-duty CLASS D grate ensures robustness, trafficability, and long-term performance.
- Flexible Options: Three system configurations available to match site conditions and pollutant risks. Demand Driven Washdown Diversion System (DD600), First Flush Diversion System (FF600), and Constant Monitoring Diversion System (CMS600).
Trusted globally, Fox™ Valves are widely used in both new installations and retrofit applications. Used in a range of applications: aviation/airports, earthmoving, armed forces, ports/marinas, fuel/gas stations, mining, slipways, trucking/transport, and vehicle dealerships.
The ESK™:
The ESK™ is a passive, high-efficiency coalescing separator that removes free oil from contaminated stormwater runoff.
Often installed as part of a treatment train, it provides rapid and reliable protection, keeping hydrocarbons out of the stormwater network until it can be safely managed.
Key Benefits of the ESK™:
- Automatic Shutoff: No manual action required in the event of a spill, protecting the stormwater network downstream.
- Fail-Safe Protection: Significantly reduces the risk of hydrocarbons entering waterways.
- Efficient Performance: Advanced separation technology removes free oil to concentrations as low as <5 PPM, ensuring cleaner water that meets strict environmental standards.
- Versatile & Cost-Effective: Scalable design handles a wide range of flows, with easy installation, low maintenance, and reusable media that reduce long-term costs.
- Safe & Reliable: Automatic shutoff and optional alarm systems provide extra protection during spills, enhancing operational safety.
- Compact & Compliant: Smaller footprint saves space while meeting CE, EN 858, and other regulatory standards, giving confidence in both performance and compliance.
The ESK™ is an essential safeguard for sites with higher spill risks, such as industrial facilities, fuel stations, farms, high-contaminating activities, and refuelling stations.
Summary:
Whether it’s preventing hydrocarbons from entering rivers and harbours, diverting polluted runoff to trade waste, or offering automatic protection during accidental spills, these systems deliver peace of mind for industrial sites, commercial developments, and high-risk facilities.
At Stormwater360, we’re committed to delivering stormwater solutions that are proven, trusted worldwide, and tailored for New Zealand conditions, helping businesses and councils build a safer, cleaner future for water.