of Point-of-Use Ceramic Water Filter Using H2 S Paper Strip Most

Monitoring programs are an essential concomitant to household drinking water treatment. The author implemented a 6-month monitoring program to assess the performance of the Potters for Peace (PFP) water filter in San Francisco Libre, Nicaragua. Both analytical methods and surveys were used to study flow-rate, microbiological removal and user acceptance of 100 PFP filters. Results for the 6-month monitoring by using hydrogen sulfide (H2S) Paper Strip Most Probable Number (H2S MPN) showed that an average of 80.4 % of the sample population had less than 2.2 H2S producing colonies per 100 mL after filtration through the PFP filter. Six percent of the visited households had more than 16 CFU/100 mL after filtration. Over the 6 months of the study, the level and pattern of contamination did not change significantly. Filtration rate measurements showed that the average PFP flow-rate was 1.7 L/hrs. Membrane Filtration with mColiBlue24 ® tests were conducted for half of the sampl