水环境质量标准(standard of water environmental quality)为控制和消除污染物对水体的污染，根据水环境长期和近期目标而提出的质量标准。除制订全国水环境质量标准外，各地区还可参照实际水体的特点、水污染现状、经济和治理水平，按水域主要用途，会同有关单位共同制订地区水环境质量标准。
建议在地表水环境质量标准中，纳入悬浮物项目。
It is proposed to bring Suspended Substance into the Environmental Quality Standards for Surface Water.
其中梅梁湾水源地水体中苯并（a）芘浓度远高于《地表水环境质量标准》规定的要求，说明梅梁湾水源地受苯并（a）芘的污染较为严重。
The PAHs density is far higher than the limit of"environmental quality standard of surface water"which proves that PAHs pollution of the Meiliang bay source water is serious comparatively.
水环境质量评价指数法是根据水质组分浓度相对于其环境质量标准的大小来判断水的质量状况。
Composite index analysis is based on the relative concentration of quality components in its environmental quality standards to judge the pollution levels of the water-quality status.
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