The Stainless Steel Filter Puck allows developers to target a wide range of pollutants—from hydrocarbons to site-specific contaminants—simply by selecting the desired filtration media. It is easily cleaned to maintain efficient operation and can be used in an elbow-up or elbow-down configuration to meet the needs of the project. It also incorporates a bypass feature to protect the system in cases of unexpectedly large rainfall events. Housed within the main header row, the Filter Puck can be easily accessed through pre-planned ports, so changing or cleaning filter media is convenient and efficient.