What does the CWA cover?
The CWA aims to prevent, reduce, and eliminate pollution in the nation’s water in order to “restore and maintain the chemical, physical, and biological integrity of the Nation’s waters”, as described in CWA section 101(a).
What is the priority pollutant list?
The Priority Pollutant List makes the list of toxic pollutants more usable, in a practical way, for the purposes assigned to EPA by the Clean Water Act. For example, the Priority Pollutant list is more practical for testing and for regulation in that chemicals are described by their individual chemical names.
What is an effluent limit?
Effluent limits are concentrations of pollutants that point source discharges are required to meet as a condition of their Wyoming Pollutant Discharge Elimination System (WYPDES) Program permit. Effluent limits can be technology based or water quality based.
What are effluent limitation guidelines?
Effluent Guidelines (also referred to as Effluent Limitation Guidelines (ELGs)) are U.S. national standards for wastewater discharges to surface waters and publicly owned treatment works (POTW) (also called municipal sewage treatment plants).
What does the CWA do?
The CWA establishes conditions and permitting for discharges of pollutants into the waters of the United States under the National Pollution Discharge Elimination System (NPDES) and gave the Environmental Protection Agency (EPA) the authority to implement pollution control programs such as setting wastewater standards …
Who enforces CWA?
EPA
EPA enforces requirements under the Clean Water Act (CWA) and Safe Drinking Water Act (SDWA). For more on EPA’s enforcement process, go to basic information on enforcement.
What are the 13 priority pollutant metals?
EPA has a set of chemical pollutants they regulate. There is 13 Priority Pollutants metals (PP 13) which consist of Antimoney (Sb), Arsenic (As), Berillyum (Be), Cadmium (Cd), Chromium (Cr), Copper (Cu), Lead (Pb), Mercury (Hg), Nickel (Ni), Selenium (Se), Silver (Ag), Thallium (Tl), and Zinc (Zn).
What is the largest pollutant in water?
The most commonly recognised non-organic pollutants are:
- Sewage.
- Nutrients.
- Waste water.
- Industrial waste.
- Chemical waste.
- Radioactive waste.
- Oil pollution.
- Plastics.
How is municipal wastewater treated?
They are often treated with Dissolved Air Floatation (DAF), Ultra-Filtration (UF), and carbon filtration methods. Large Discharge Volume – Some industrial and municipal facilities generate large volumes of wastewater which may demand the implementation of zero liquid discharge systems.
What are technology-based effluent limitations?
Technology-based effluent limitations (TBELs) in NPDES permits require a minimum level of treatment of pollutants for point source discharges based on available treatment technologies, while allowing the discharger to use any available control technique to meet the limits.
What is influent and effluent?
Influent is water that “flows in”. This is the raw, untreated wastewater. Effluent means to “flow out”. This water is safe for discharge to lakes or rivers.