Some issues regarding surface water quality in the Ha Nam area, Quang Yen town, Quang Ninh province

Tóm tắt

Ha Nam is a crucial area in the socio-economic development of Quang Yen town in particular and Quang Ninh province in general. This study was conducted to identify the current status of surface water pollution in this area to provide a basis for proposing environmental management solutions linked to the implementation of socio-economic development plans. Statistical analysis of water quality monitoring results at 19 points during the dry and rainy seasons of 2023 reveals that the study area is currently contaminated with organic matter, nutrients, microorganisms, and suspended solids. The overall Water Quality Index (WQI) for the entire area is 39.0 ± 16.4 in the dry season and 47.4 ± 18.9 in the rainy season. The difference in water quality between the two seasons is statistically significant with a sig value of 0.02. Pearson correlation analysis shows correlations between several physical and chemical parameters. Cluster analysis indicates similarities in water quality among 5 monitoring points in both monitoring periods. The research results also demonstrate that statistical analysis helps to gain a deeper understanding of the status of water quality and aid managers in implementing better water quality management and monitoring programs, reducing the resources required for monitoring. Keywords: Ha Nam area, water quality, statistical analysis