Perkfilter
Perkfilter
Flexible Cartridge Filtration System
Perkfilter adapts to site needs with cartridge-based stormwater filtration technology.
Perkfilter is a cartridge-based stormwater filtration system designed to remove a broad range of pollutants from urban and suburban runoff. Using proprietary filter media cartridges, it captures and retains total suspended solids, metals, nutrients, hydrocarbons, trash, and debris. Its modular design makes it easy to tailor pollutant removal to site-specific challenges while maintaining reliable performance across diverse project conditions.
High-Efficiency Pollutant Removal
- Removes total suspended solids, trash, debris, and gross solids before they reach downstream waters.
- Targets metals, nutrients, and hydrocarbons with specialized filter media.
- Retains pollutants effectively, reducing the total downstream discharge load.
Adaptable Design for Any Site
- Compact footprint makes it ideal for both new development and retrofit applications.
- Cartridge configurations can be customized to address specific pollutants of concern.
- Approved for use in multiple jurisdictions with performance verified by third-party testing.
Reliable and Cost-Effective
With high flow rates and proven treatment performance, Perkfilter delivers dependable water quality control while helping projects stay on budget. Its ease of maintenance and scalable design make it a long-term solution for managing runoff in compliance with stormwater regulations.
Smarter Filtration for Modern Challenges
Stormwater treatment comes with real-world demands that range from space limitations to strict compliance thresholds. Nexterra's PerkFilter is engineered to meet these challenges with a cartridge-based design that simplifies installation and long-term service. With verified approvals from agencies across the country, it helps project teams achieve reliable compliance without adding unnecessary complexity.
Built for Flexibility and Efficiency
A standout strength of PerkFilter is its ability to adapt. The modular design gives engineers freedom to configure structures and cartridges to match site conditions while still delivering powerful results. This approach keeps projects practical while ensuring treatment goals are met.
PerkFilter's structure and components are engineered for both performance and practicality. These design features make it easier to fit within site constraints while keeping long-term operation straightforward:
- Available as vaults, manholes, catch basins, or custom layouts to suit site constraints
- High treatment capacity with strong flow per footprint so fewer structures may be required
- Modular cartridge design that allows quick media changeout and straightforward service access
- Internal bypass that protects treatment media during peak flows and reduces excavation costs
Upstream & Downstream Allies of PerkFilter
PerkFilter is most effective when paired with complementary stormwater treatment solutions. By sequencing it with the right upstream and downstream technologies, you can maximize sediment capture, pollutant removal, and long-term system performance.
- Rain Guardian – Traps trash and coarse sediment before water enters PerkFilter, helping prevent clogging and extending cartridge life.
- PreTX – Provides pretreatment for sediment and hydrocarbons, ensuring cleaner flows reach PerkFilter for advanced pollutant removal.
- StormTrooper® Hydrodynamic Separator – Removes heavy sediment, oils, and floatables, reducing loading and optimizing filtration efficiency.
- R-Tank – Stores and infiltrates the filtered stormwater on site for sustainable recharge.
- FocalPoint® High Performance Biofiltration System – Polishes PerkFilter's treated flows, targeting nutrient removal and enhancing water quality.
A Clear and Dependable Treatment Process
Behind its compact footprint, Nexterra's PerkFilter operates with a multi-stage system designed for simplicity and consistency. Each chamber plays a role in protecting downstream resources while keeping maintenance manageable.
- Inlet chamber diverts peak flows and removes trash and large solids
- Treatment chamber uses media cartridges to capture fine sediment, phosphorus, metals, hydrocarbons, and residual debris
- Outlet chamber collects treated water before safely releasing it downstream
- During storms, flows up to the treatment rate are filtered, while higher flows bypass to prevent washout of captured material
Applications that Benefit Most
PerkFilter proves its value in environments where pollutant loads are high and space is at a premium. By combining flexibility with field-verified performance, it supports engineers and municipalities in meeting water quality objectives across a wide range of sites. Ideal Applications:
- Urban and suburban runoff treatment where compact design is critical
- Industrial or commercial facilities requiring targeted pollutant removal
- New development and redevelopment projects needing regulatory approvals for TSS and phosphorus
- Pretreatment for detention, infiltration, or reuse systems to protect downstream assets
- Retrofit projects where shallow inlets or limited depth make larger systems impractical
Performance Backed by Certification
The system's credibility rests on independent testing and multi-jurisdictional approvals. PerkFilter's consistent results give designers confidence that water quality standards will be met while simplifying the review and approval process.
- Verified high removal rates for TSS and phosphorus under third-party testing programs
- Approved by Washington State Ecology for basic and phosphorus treatment
- Certified by New Jersey DEP and NJCAT for TSS performance
- Accepted by Maryland Department of the Environment for TSS removal
- Recognized by Virginia DEQ with total phosphorus credit on the BMP Clearinghouse
Support Material
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