本研究的目的是评估六个国家的原水和处理水的质量 魁北克的处理厂，其供水受到蓝藻水华的影响。高水平的 从7月至7月，从所有六个工厂采集的原水样本中都发现了蓝藻 2001年11月至2004年。在43%的样本中检测到至少一种蓝耳毒素，高达5.3% 微囊藻毒素和2.3微囊藻毒素-a。鉴于 摄入和吸入蓝藻毒素和蓝藻，它们在原水中的水平表明 需要有效的治疗来去除它们。这六种植物的样本显示，总体而言， 处理过的水含有极低水平的蓝藻（约200个细胞/毫升），浊度较低 水平（<0.5 NTU）。此外，只有5%的处理过的水样可检测到 氰基毒素，最大值为0。 微囊藻毒素LR为1微克/升（比 建议的最大可用浓度）。同时确认饮用水的安全性 由魁北克目前受影响的六家处理厂生产，该研究还表明，这些处理厂 易受污染影响，并指出需要进一步保护和恢复湖泊 以及作为饮用水源的河流。包括15个参考文献、表格和图表。

The objective of this study was to evaluate the quality of raw and treated water from six treatment plants in Quebec whose water supply is affected by cyanobacterial blooms. High levels of cyanobacteria were identified in raw water samples collected from all six plants from July to November 2001-2004. At least one cyanotoxin was detected in 43% of the samples, with up to 5.3 µg/L of microcystins and 2.3 µg/L of anatoxin-a. Given the threat to human health posed by the ingestion and inhalation of cyanotoxins and cyanobacteria, their levels in raw water demonstrate the need for effective treatments to remove them. Samples from the six plants showed that, in general, treated water contained very low levels of cyanobacteria (around 200 cells/mL), and low turbidity levels (<0.5 NTU). Moreover, only 5% of the treated water samples had detectable concentrations of cyanotoxins, with a maximum value of 0.1 µg/L for microcystin-LR (10 to 15 times lower than recommended maximum available concentrations). While confirming the safety of the drinking water produced by the six treatment plants currently affected in Quebec, the study also showed that the plants are vulnerable to the impacts of pollution, and pointed to the need to further protect and restore lakes and rivers that serve as drinking water sources. Includes 15 references, tables, figure.