The following report details the components and illustrates the highlights of a first flush system called the Brazilian Ball Pre-Filter System.
DOLMAN, B. LUNDQUIST, K. (2008): Roof Water Harvesting for a low Impact Water Supply: Featuring the Brazilian Ball Pre-Filter System: A Case Study. Occidental: The WATER Institute Occidental Arts and Ecology Center (OAEC) URL [Accessed: 12.03.2019] PDF