The groundwater quality deterioration is a global phenomenon due to the effect of contaminated surface water. This study covers the investigation of groundwater quality using the contamination indices, statistical analysis, and hydrochemical facies. Thirty-one water samples that representing the water resources in the study area were collected and analyzed for chemical compositions. There are two aquifers; Pleistocene and Miocene. From the obtained data, the electric conductivity (EC) values ranged from 8520 to 19410 μS/cm in Pleistocene aquifer. While in Miocene aquifer, it ranged from 4290 to 7920 μS/cm. The wide variation is due to interaction with aquifer rocks. The hydrochemical facies evolution diagram (HFE-D) indicated that the majority of samples belong to an intrusion phase; the Na-Cl facies represents the state of the aquifer and the remaining sample is scattered in the eld of freshening. The dominance of average cations is about Na + > Mg 2+ > Ca 2+ > K + , where the anion dominance average is in the imperative of Cl − > SO 4 2− > HCO 3 -. Multivariate statistical techniques, such as cluster analysis (CA) and factor analysis (FA) showed contamination with heavy metal and fecal due to the in uence of the sewage treatment plant. The spatial distribution of heavy metal pollution index (HPI), Ecological risk index (ERI) and pollution index of groundwater (PIG), in the southeastern portion of the research, revealed high values near the center and particularly in the northwest portion of the study region. It demonstrated that water in the northeast of the study area is likely to be in uenced by heavy metal leaching from the water treatment plant.Highlights 1-Assess the quality of surface and groundwater 2-Hydrochemical data are described for both groundwater and surface water samples.3-Heavy metal pollution index is used for overall water quality determination 4-Cluster analysis is a statistical analysis used in grouping samples in clusters 5-hydrochemical facies diagram is used for the determination of seawater intrusion

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The implementation of the agricultural production sharing agreement sholud be in accord with Regulation No. 2, 1960, but in the reality this regulation is not obeyed by the land-owner farmers and land-tiller farmers. This research aimed at describing the implementation of the production sharing agreement, its correspondence with Regulation No. 2, 1960, the level of the community's understanding of Regulation No. 2, 1960, and the efforts taken by the competent officials so that Regulation No. 2, 1960 can be implemented effectively in Cina Subdistrict. This research was a descriptive research with the informants taken purposively from land-owner farmers and land-tiller farmers whose number was 10 persons respectively, the head of Awo Village, the head of Kawerang Village and the head of Cina Subdistrict. The data were collected through interviews and documentation and analyzed by using descriptive-qualitative analysis. The results of the research showed that the implementation of the agricultural production sharing agreement is based on the customs that have taken place from generation to generation; the implementation of the agricultural production sharing agreement is not in accord with Regulation No. 2, 1960; and the government officials, at Subdistrict level as well as at Village level, have never carried out the socialization of Regulation No. 2, 1960 to the community of farmers in Cina Subdistrict of Bone District.