Coastal pollution levels in Todos Santos Bay (TSB) recreational beaches have increased in recent years due to the uncontrolled disposal of wastewater and pollutants to the coast by human activities (urbanization and tourism). In this work, the concentration of water quality parameters along the coast of TSB was evaluated from February 2012 to January 2013. Sampling was carried out at monthly intervals on 29 beach locations. Results showed that the maximum values of all parameters were always found close to the treated wastewater discharge area at Arroyo El Gallo station. Temporally, both nutrients and biochemical oxygen demand reached notably high levels in winter-spring and close to wastewater discharges. During summer, maximum counts of total coliforms and parasite eggs were detected close to wastewater discharges. Overall, our study provides a diagnostic approach on the spatiotemporal variability of water quality parameters for future studies along the coastal waters of TSB.

近年来，由于人类活动（城市化和旅游）向海岸无控制地排放废水和污染物，托多斯桑托斯湾 (TSB) 休闲海滩的沿海污染水平有所增加。在这项工作中，评估了 2012 年 2 月至 2013 年 1 月期间 TSB 沿岸水质参数的浓度。每月对 29 个海滩位置进行采样。结果表明，所有参数的最大值总是出现在 Arroyo El Gallo 站处理过的废水排放区附近。从时间上看，营养物质和生化需氧量在冬春季节和接近废水排放量都达到了显着的高水平。在夏季，在废水排放口附近检测到大肠菌群和寄生虫卵的最大计数。全面的，