Effect of Land Use on Ground Water Quality (A CaseStudy from Ciracas Sub District, East Jakarta, Indonesia)

Most of Ciracas society as a rural area had givena complain of worst groundwater that occured metally odourdan yellowish colour. To know the quality of groundwater ofthat it was conducted the research indicated by the existing offeacal Coliform and concentration of Fe and Mn. There were5 villages as sites of sampling (Ciracas, Susukan, KampungRambutan, Kelapa Dua Wetan, and Cibubur Bekasi) whereeach locations was differed from the use to rice field, swamp,and garden. Microbial and chemical data were collected ateach sites from 15 wells with three replications. Data wereanalyzed by One Way Anova to compare each locations withdifferent land uses and concentration of Fe and Mn, andmicrobial data. Pearson’s Correlation method was also used toanalyze correlation between septic tank distance andconcentration of Coliform and E. coli. The results showed thatmost of the groundwater surrounding Ciracas sub-district hadbeen contaminted by Coliform and Escherichia coli rangingfrom 0 to 26.000 MPN/100 ml and 0 to 6790 MPN/100 ml,excluded Susukan village which was used to rice field, and thiswas significantly different at study sites in each land uses(p<0.05). Nevertheless, well depth and distance of septic tankto well were not significantly correlated with concentration ofColiform and E. coli (p>0.05). Swamp sites indicated highamount of Fe, more than 0,3 ppm and for the used to rice fieldshowed less amount of Mn (< 0,1 ppm). Nevertheless, based onstatistical results showed that there was no significantdifferences in concentration of Fe and Mn in different landuses at study sites (p>0.05) and also no correlation with welldepth significantly ((p>0.05). Refer to DHMI No. 907/2002about drinking water standard, it could be said that most ofgroundwater in Ciracas sub-district was not able to be used asdrinking water. It is needed pre-treatment to drinkable.