Improve water quality and provide water and sanitation to health facilities.
改善水质量并向卫生设施提供水和环境卫生服务。
It is demonstrated that the recovery of lake ecosystem may greatly improve water quality.
实践证明，湖泊生态系统恢复可以显著改善水质。
But in the longer term water quality must improve enough for swimming.
但在较长一段时间里必须把水质提高到至少可以游泳。
It is very helpful to improve the river water quality.
十分有助于河流水质的改进。
Therefore, dredging of sediment will improve greatly water quality of the river.
因此，对淤泥进行清淤将会大大提高河道的水质。
Therefore, dredging of sediment will improve greatly water quality of the river.
因此，对淤泥进行清淤将会大大提高河道的水质。
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