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Which water-quality measurements are regulated by stream standards?
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Stream standards are regulatory frameworks designed to prevent the deterioration of water quality in bodies of water such as streams, rivers, and lakes. These standards classify water bodies based on their "maximum beneficial use" and set allowable limits for specific water-quality parameters to protect those uses.12
According to environmental engineering principles, the water-quality measurements regulated by stream standards include:
- Dissolved oxygen12
- Turbidity12
- Acidity (pH)12
- Coliforms2
- Toxic substances2
While these standards focus on the ambient quality of the receiving water body, they are distinct from effluent standards, which regulate the specific contaminants discharged from wastewater treatment plants, such as biochemical oxygen demand and suspended solids.12