The second in a series, this bulletin deals with research on developing methods of treating farm pond water for domestic purposes. Reported here are the results of a four-year (1958-62) evaluation of pond water treatment systems on private farms. It is shown that all 12 treatment systems studies were unsatisfactory in one or more respects. None of them produced high quality water at all times. Data from the 12 installations were combined so that each unit process (i.e., intake, filtration, and disinfection) could be evaluated. Diagrams and statistical tables are presented in support of the conclusions, and a bibliography is included. Recommendations for further research are made.