Up-Flo Filter
Up-Flo Filter
High-Rate Filtration for Cleaner Runoff
Up-Flo Filter delivers high-efficiency pollutant removal in a modular stormwater treatment system.
Nexterra's Up-Flo Filter is a high-performance treatment system engineered to remove sediments, nutrients, hydrocarbons, and oils from stormwater runoff. As the only fluidized bed up-flow filter in the industry, it achieves high flow rates while preserving media life and minimizing maintenance. Developed in collaboration with the U.S. EPA, it meets stringent stormwater regulations and supports customizable configurations to fit specific site requirements.
Engineered for Maximum Efficiency
- High pollutant removal rates: Capable of removing over eighty percent of total suspended solids, with some installations achieving up to ninety-eight percent.
- Multistage treatment in one system: Combines sedimentation, screening, and modular filtration media to capture both gross debris and fine particles.
- Flexible design: Offers modular height options, accommodates large pipe diameters, and works well for both new construction and retrofit sites. Available in manhole or vault bodies to suit site constraints.
Performance + Proven Knowledge
Up-Flo Filter is backed by decades of engineering expertise from the team behind Downstream Defender and First Defense. It is NJCAT verified and lab tested for its ability to reduce oil, sediment, heavy metals, and nutrients while delivering long media life and low maintenance demands.
Advanced Filtration Backed by Proof
When water quality standards are strict and space is limited, the Up-Flo Filter delivers reliable treatment in a compact footprint. Independent testing and third-party verification confirm its ability to remove a wide spectrum of pollutants, giving project teams confidence in both compliance and performance.
- Verified removal of fine particles, oils, nutrients, and metals under NJCAT and multiple state programs.
- Laboratory and field studies that confirm consistently high TSS removal even under unpredictable storm conditions.
- A development partnership with the U.S. EPA designed to meet the nation's evolving stormwater quality requirements.
- Regulatory approvals from coast to coast that ensure suitability for a wide range of jurisdictions.
Design Options That Work for You
Every project brings unique challenges, from tight urban sites to sprawling industrial developments. The Up-Flo Filter adapts with modular design and multiple configuration choices, making it a practical solution wherever advanced treatment is required.
- Modular vault or manhole bodies sized to fit available space and flow conditions
- Media flexibility, including CPZ blends and targeted combinations for nutrients or heavy metals
- Integration with detention systems, green infrastructure, and distributed drainage strategies
- Retrofit capability allowing upgrades to existing stormwater networks without full reconstruction
Upstream & Downstream Allies of Up-Flo Filter
The Up-Flo® Filter is most effective when paired with complementary stormwater solutions. By combining it with upstream pretreatment and downstream storage or infiltration products, you can maximize water quality and overall system performance:
- HydroDry™ – Placed upstream, this hydrodynamic separator captures coarse sediment, oils, and floatables before flows reach the Up-Flo Filter, reducing maintenance and extending filter life.
- Up-Flo® Filter – The core treatment step, removing fine sediments, nutrients, metals, and hydrocarbons through advanced filtration media.
- StormTank® Module – Installed downstream, provides storage and infiltration capacity, managing treated water onsite and reducing downstream flooding impacts.
- Rain Guardian® Bunker – An upstream inlet protection unit that screens debris and trash before flows enter the Up-Flo Filter, ensuring longer-term performance.
- PerkFilter® – In applications requiring additional polishing, PerkFilter can be used downstream of Up-Flo to achieve enhanced nutrient and metals removal, ensuring compliance with more stringent water quality targets.
Operational Advantages
The value of a treatment system lies not only in what it removes but also in how easily it operates and maintains performance over time. Up-Flo Filter is engineered to keep maintenance simple while sustaining efficiency year after year.
- High loading rates reducing footprint compared to other filter systems
- No moving parts and durable components designed for long service life
- Straightforward media replacement with safe access for maintenance crews
- Configured bypass that prevents washout of captured pollutants during peak flows
Where It Fits Best
Different projects demand different approaches, but the Up-Flo Filter is engineered to adapt without losing performance. Its flexibility allows engineers and owners to integrate advanced filtration where land is scarce, compliance is critical, or runoff quality must be tightly controlled.
- Commercial and industrial facilities needing strong control of oils, sediment, and metals
- Urban redevelopment projects facing space and compliance pressures
- Sustainable drainage and low-impact development designs requiring advanced treatment
- Municipal initiatives focused on reducing pollutant loads to protect sensitive waterways
Support Material
Nexterra Environmental partners with leading manufacturers to deliver the industry’s most trusted solutions.