BaySaver Stormwater Filters


State of the Art Stormwater Media Filter

Our BayFilter media filter cartridge system is our ongoing commitment to state of the art stormwater treatment. The BayFilter is configured in a compound spiral media, which allows for a large filter surface area in a compact footprint. The configuration creates the most efficient, effective stormwater filter available on the market. The BayFilter comes in multiple sizes and can meet any flow rate or design consideration, with multiple media configurations and the ability to target specific pollutants. Our BayFilter Systems are typically concrete structures that include a single or multiple BayFilter cartridges. Inside the structure, the BayFilters are connected to an outlet manifold that allows treated water to exit the system.

Basic Principles of Stormwater Filtration

Stormwater treatment has unique requirements, often requiring that large volumes of water get treated at relatively high flow rates. There are often also requirements that a lot of pollutants get removed even with large stretches of time between maintenance. At BaySaver, we believe it is our responsibility to create balance amidst these variables to provide effective stormwater treatment at an exceptional value to our clients.

Effective stormwater media filters must be able to remove the pollutants of concern. They also must be able to function for a reasonable period of time (as defined by both industry and regulatory standards). Filter systems should also limit re-suspension or release of pollutants that have been collected between maintenance periods.

Usually, pollutants of concern are sediments; phosphorous, metals, turbidity, nitrogen, fecal coliform, and bacteria are included although they are not commonly regulated nationwide. We have tested the BayFilter both in the lab and the field, which demonstrated that the BayFilter is effective and efficient in capturing those pollutants.

Some settling of particles and pollutants occurs as the influent enters the filter vault. This process typically removes larger particles and debris, but it does not remove the small particles or any dissolved materials. The filter removes the very small particles and dissolved nutrients and metals. The media within a filter must be small enough to intercept the tiny sediment particles. It must also be able to attract charged and elemental particles through ion exchange.

Stormwater Filter Media

It is important to consider the surface area of the media filter when selecting and specifying a filter system. With more surface area, there will be greater potential flow through and across the media, so more pollutants are able to be removed by the filter. The BayFilter’s vertically oriented and patented compound spiral media configuration helps maximize a media filter’s area potential.

A significant part of filter longevity is how much sediment the filter can capture. Filters must be able to treat large quantities of sediment while maintaining the appropriate flow rates and sediment capturing. The BayFilter’s sediment loading capacity is 350 pounds (158.7 kg) for the 45 gpm (170.3 lpm) and 30 gpm (113.6 lpm) cartridges.

Stormwater Cartridge Filters

We are committed to protecting public waterways. A properly functioning filtration system will permanently capture pollutants, effectively backwash media, allow the media to drain between storm events, and provide an economically reasonable maintenance interval. The BayFilter cartridge system helps meet these requirements to protect our water resources.


  • Enhanced media capable of removing 80% of TSS and 65% of total phosphorus load
  • Customizable systems
  • Long service life
  • NJDEP and WADOE approved technology
  • Recyclable cartridges


  • Enhanced pollution prevention
  • Reduced life cycle cost
  • Low maintenance costs