In the Braga aquifer, groundwater quality and mineralization processes have been assessed using a qualitative hydrogeochemical data analysis. The interpretation of physico-chemical parameters indicates that all groundwater samples have TDS and EC values superior to the permissible limits of WHO standards and are classified as very hard (TH > 300). According to Gibbs diagrams, these high values are in part related to the predominance of evaporation process, which indicates the importance of the return flow phenomenon. While, the WQI classification shows that roughly 2.3% of groundwater is unsuitable for human consumption, 27.9 is very poor, 62.8 is poor, and 7% is good. For irrigation purposes, more than 93% of samples are unsuitable and 7% are suitable based on the SAR. However, the Permeability index (PI) and the Kelly Ratio (KR) demonstrate that almost all samples are suitable for irrigation. The interpretation major ion analyses demonstrate that groundwater mineralization is mainly controlled by the dissolution of evaporate minerals, the direct/reverse ion exchange process, and the leaching of nitrogen and fertilizers. A higher concentration of nitrate in the groundwater of the Braga aquifer was mainly located in the north-east and the central parts and may cause a serious impact on human health. The non-carcinogenic health risk assessment of nitrate (NO₃) indicated that the children are more vulnerable to direct ingestion of drinking water than adults.

在布拉加含水层，地下水质量和矿化过程已使用定性水文地球化学数据分析进行了评估。理化参数的解释表明，所有地下水样品的 TDS 和 EC 值均优于 WHO 标准的允许限值，并被归类为非常硬（TH > 300）。根据吉布斯图，这些高值部分与蒸发过程的优势有关，这表明回流现象的重要性。而 WQI 分类显示，大约 2.3% 的地下水不适合人类饮用，27.9 为极差，62.8 为差，7% 为好。对于灌溉目的，根据 SAR，超过 93% 的样品不适合，7% 适合。然而，渗透率指数 (PI) 和凯利比 (KR) 表明几乎所有样品都适合灌溉。解释主要离子分析表明，地下水矿化主要受蒸发矿物的溶解、直接/反向离子交换过程以及氮和肥料的浸出控制。布拉加含水层地下水中较高浓度的硝酸盐主要分布在东北部和中部地区，可能对人体健康造成严重影响。硝酸盐（NO）的非致癌性健康风险评估 以及氮和肥料的浸出。布拉加含水层地下水中较高浓度的硝酸盐主要分布在东北部和中部地区，可能对人体健康造成严重影响。硝酸盐（NO）的非致癌性健康风险评估 以及氮和肥料的浸出。布拉加含水层地下水中较高浓度的硝酸盐主要分布在东北部和中部地区，可能对人体健康造成严重影响。硝酸盐（NO）的非致癌性健康风险评估₃）表明儿童比成人更容易直接摄入饮用水。