Before the Modular Wetlands Device was installed, the boat wash water was treated by StormCeptor vaults installed in 2003. After installation, bacteria levels still exceeded action levels. Further attempts to reduce bacteria levels resulted in a pilot study conducted by the City of Oceanside. According to the Bacterial Reduction Pilot Program – Oceanside Harbor, XTEX AM antimicrobial fabric filters were installed on the separator vaults in addition to more frequent cleaning of the boat wash out separation vaults and drains as part of the study. While monitoring results showed an initial reduction in bacteria levels, the product did.