The United States has a large environmental standards system, which is based on environmental water quality standards, national environmental air quality standards, and solid waste management standards. Each industry develops relevant environmental standards based on industry characteristics. The standards issued by the US Environmental Protection Agency are federal regulations that are highly legally binding.
Environmental Water Quality Standards The Water Quality Law promulgated by the United States in 1965 introduced some important new regulations, requiring states to determine water quality standards and specific implementation plans to achieve them. The water quality standards specified mainly include three parts, namely current and future water bodies. Use, establish water quality standards for water use, plans to meet water quality standards (including: preventive measures, construction plans, implementation behavior, supervision, and monitoring), and must go to the states to determine the water quality standards for interstate water bodies. .
In 1972, the US Congress passed an amendment to the Clean Water Act, which changed the management method based solely on water quality standards, but adopted a combination of emission limits and water quality standards based on pollution control technology. Management method. The emission limitation is based on technology. According to the technology of different industries, the level of pollution production, and the treatment technology, various pollutant emission limit criteria and standards are determined.
National Air Quality Standards The Clean Air Act, amended in 1990, requires the US Environmental Protection Agency to establish national ambient air quality standards for pollutants that damage the public environment and health. The Clean Air Act defines two national air quality standards.
Primary Standards - For public health, the limited scope mainly includes sensitive populations such as asthma patients, children and the elderly.
Sub-criteria – as strict as at least the primary standards – are intended to “contain public welfare without any known or expected adverse effectsâ€, including primarily to reduce hazards to animals, crops, plants and buildings. For example, the primary standard for sulfur oxides is to protect populations with various respiratory diseases, while the secondary standard is to protect vegetation from damage.
In addition, the US Environmental Protection Agency's Office of Air Quality Planning and Standards has developed six major pollutant standards, known as pollutant standards.
Solid waste management is mainly managed in accordance with the Law on Resource Conservation and Recovery and the Comprehensive Environmental Response, Compensation and Liability Act. After the 1990s, waste disposal in the United States became more and more strict, and the US Environmental Protection Agency established strict technical specifications for solid waste landfills.
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