Microbes in groundwater play a key role in determining the drinking water quality of the water. The study aims to interpret the sources of microbes in groundwater and its relationship to geochemistry. The study was carried out by collecting groundwater samples and analyzed to obtain various cations and anions, where HCO₃⁻, Cl⁻ and NO₃⁻ found to be higher than permissible limits in few samples. Microbial analysis, like total coliform (TC), total viable counts (TVC), fecal coliforms (FC), Vibrio cholera (V. cholerae) and total Streptococci (T. streptococci) were analyzed, and the observations reveal that most of the samples were found to be above the permissible limits adopted by EU, BIS, WHO and USEPA standards. Correlation analysis shows good correlation between Mg²⁺–HCO₃⁻, K⁺–NO₃⁻, TVC- V. cholerae and T. streptococci-FC. Major ions like Mg⁺, K⁺, NO₃, Ca²⁺ and PO₄ along with TS and FC were identified to control the geochemical and microbial activities in the region. The magnesium hardness in the groundwater is inferred to influence the TVC and V. cholerae. The mixing of effluents from different sources reflected the association of Cl with TC. Population of microbes T. streptococci and FC was mainly associated with Ca and Cl content in groundwater, depicting the role of electron acceptors and donors. The sources of the microbial population were observed with respect to the land use pattern and the spatial distribution of hydrogeochemical factors in the region. The study inferred that highest microbial activity in the observed in the residential areas, cultivated regions and around the landfill sites due to the leaching of sewage water and fertilizers runoff into groundwater. The concentrations of ions and microbes were found to be above the permissible limits of drinking water quality standards. This may lead to the deterioration in the health of particular coastal region.

地下水中的微生物在确定饮用水的质量方面起着关键作用。该研究旨在解释地下水中微生物的来源及其与地球化学的关系。该研究由收集地下水样品进行分析，以获得各种阳离子和阴离子，其中HCO ₃ ^- ，氯^-和NO ₃ ^-发现比几个样品在允许的限值。微生物分析，例如总大肠菌群（TC），总存活数（TVC），粪便大肠菌群（FC），霍乱弧菌（V. cholerae）和总链球菌（T. streptococci））进行了分析，发现发现大多数样品都超过了EU，BIS，WHO和USEPA标准所采用的允许极限。相关分析表明MG之间良好的相关性²⁺ -HCO ₃ ^-，K ⁺ -NO ₃ ^-，TVC-霍乱弧菌和T.链球菌-FC。确定了主要离子，如Mg ⁺，K ⁺，NO ₃，Ca ²⁺和PO ₄以及TS和FC，以控制该地区的地球化学和微生物活性。推断地下水中的镁硬度会影响TVC和霍乱弧菌。来自不同来源的废水的混合反映了Cl与TC的关联。微生物链球菌的种群FC主要与地下水中Ca和Cl含量有关，描述了电子受体和施主的作用。从该地区的土地利用方式和水文地球化学因素的空间分布方面观察了微生物种群的来源。该研究推断，由于污水和化肥径流渗入地下水，因此在居民区，耕种区和垃圾填埋场周围观察到最高的微生物活性。发现离子和微生物的浓度高于饮用水水质标准的允许极限。这可能导致特定沿海地区的健康状况恶化。