Spatial analysis of coliform bacteria contained in phreatic water in colomadu sub-district karanganyar

The objective of this study is to determine (1) the distance of septic tank with phreatic well at Colomadu Sub District; (2) the distribution of colifrom bacteria in phreatic well at Colomadu Sub District; (3) the correlation of septic tank and phreatic well to the content of coliform bacteria The population in this study was all villages in Colomadu Sub District The Sample was using simple random sampling Data collection was carried out by using field measurement for the flow of phreatic water data and septic tank distance with wells and laboratory tests for coliform bacteria content data on phreatic water The analysis used spatial analisis and descriptive quantitative with statistical test was a correlation test The result (1) the distance of septic tank with phreatic well the 11 samples are more than 11 meters 10 samples at 9 – 11 meters 22 samples at 6 – 8 and 27 samples below 5 meters (2) coliform contains in phreatic wells the 25 samples are more than clean water quality standard and 45 samples under clean water quality standard (3) there is negatife relationship of linear correlation (r = -0 27) between the content of septic tank distance with coliform bacteria in phreatic wells