澳大利亚新南威尔士州亨特区水务委员会对奇切斯特大坝的水进行的研究表明，供水可能通过直接过滤进行处理，其资本和运营成本远低于常规处理的成本。为了确定直接过滤的可行性，进行了大量的中试试验，包括优化介质和化学系统，评估递减率和恒速过滤，以及使用人工制造的“脏水”根据这些初步研究选择的处理工艺为恒速直接过滤，采用机械在线化学混合，无絮凝。包括13个参考文献、表格、图表。

Study of the water of Chichester Dam, operated by the Hunter District Water Board in New South Wales, Australia, indicated that the supply could possibly be treated by direct filtration at capital and operating costs well below those for conventional treatment. Extensive pilot-plant testing carried out to determine the feasibility of direct filtration included optimization of the media and of the chemical system, evaluation of declining-rate versus constant-rate filtration, and use of artificially manufactured "dirty water." The treatment process selected as a result of these pilot studies was constant-rate direct filtration, with mechanical in-line chemical mixing and no flocculation. Includes 13 references, tables, figures.