Fecal Contamination and High Nutrient Levels Pollute the Watersheds of Wujiang, China

摘要: Freshwaters in China are affected by point and non-point sources of pollution. The Wujiang District (Suzhou City, China) has a long history canals, rivers, lakes that currently facing various water quality issues. In this study, the four rivers lake was assessed to quantify pollution explore its causes. Seventy-five monthly samples were collected from these bodies (five locations/samples per area) August October 2020 compared with nine control protection area. Fifteen physicochemical, microbiological, molecular–microbiological parameters analyzed, including nutrients, total fecal coliforms, markers. Significant variation observed for most at all areas. Total phosphorus, phosphates, nitrogen, ammonium–nitrogen, coliforms mostly exceeded acceptable limits set Chinese Ministry Environmental Protection. LiPuDang Lake WuFangGang River degraded studied correlated urban, agricultural, industrial, other major land use patterns. results suggest contamination associated certain practices, primary factors District. Detailed monitoring targeted management strategies necessary Wujiang’s watersheds.