A simple upgrade to deliver high levels of treatment and to enhance a conventional septic system or to renovate a biologically failed septic system. ETV-EPA verified.

How it Works

The BioMicrobics FAST® systems provide significantly improved nitrification/denitrification performance over traditional systems and exceeding typical effluent requirements for wastewater recycling opportunities or reducing the size of the leach field with less aesthetic disturbance of property value or system components. Offering versatility and consistent high performance, the FAST® are also a favorite on marine vessels and offshore platforms of all types to produce high-quality effluent, specifically designed for extreme environments.

How it Installs

This high-performance “submerged aerated biological filter” provides proven treatment of residential (domestic-strength) wastewater installed either in an existing tank or for new construction. The RetroFAST® wastewater treatment systems are designed in 3 specific sizes for 1 to up to 8 persons living on the property. Ideal for upgrading a conventional septic system, the RetroFAST® enhances or repairs any existing septic systems that have biologically failed. The RetroFAST® system inserts into an existing 18” manhole without the need for heavy equipment. A very cost-effective solution that meets environmental standards with long term results.

Finding the Right Size

It is recommended to check what local regulations are required in case additional information is needed.

RetroFAST® Available Sizes

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