Effluent Limitation: Restrictions established by a state or EPA on quantities, rates, and concentrations in wastewater discharges.
Effluent Standard: See Effluent Limitation.
Effluent limitations applied to dischargers when mere technology-based limitations would cause violations of water quality standards. Usually applied to discharges into small streams.
Source: Terms of the Environment
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Technology-Based Limitations: Industry-specific effluent limitations based on best available preventive technology applied to a discharge when it will not cause a violation of water quality standards at low stream flows.
technology-based standards Effluent limitations applicable to direct and indirect sources which are developed on a category-by-category basis using statutory factors, not including water-quality effects.
Water Quality-Based Limitations: Effluent limitations applied to dischargers when mere technology-based limitations would cause violations of water quality standards. Usually applied to discharges into small streams.
 See also: Water, Discharge, Effluent, Structure, Permit
  
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