本文报告了一项研究的结果，以确定最佳条件，最大限度地提高非氯化和氯化饮用水供应中的细菌活菌数。将铺展电镀和膜过滤技术与各种培养基结合使用，这些培养基在20摄氏度或35摄氏度下培养不同时间。描述了增加细菌数量的非标准程序，并估计了异养细菌菌株多样性。研究中使用的培养基包括R2A、CPS、m-SPC、SMA和DP。包括22个参考文献、表格和图表。

This paper reports results of a study to determine optimum conditions for maximizing viable counts of bacteria from nonchlorinated and chlorinated drinking water supplies. Spread plating and membrane filter techniques were used in combination with various media that were incubated at either 20 degrees celsius or 35 degrees celsius for varying periods. Nonstandard procedures that increased bacterial counts are described, and heterotrophic bacterial strain diversity is estimated. Media used in the study included R2A, CPS, m-SPC, SMA, and DP. Includes 22 references, tables, figures.