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  2. Title 22 of the Code of Federal Regulations - Wikipedia

    en.wikipedia.org/wiki/Title_22_of_the_Code_of...

    International Boundary and Water Commission, United States and Mexico, United States Section XII: 1200–1299: United States International Development Cooperation Agency: XIII: 1300–1399: Millennium Challenge Corporation: XIV: 1400–1499

  3. Hydrodynamic separator - Wikipedia

    en.wikipedia.org/wiki/Hydrodynamic_separator

    In civil engineering (specifically hydraulic engineering), a hydrodynamic separator (HDS), also called a swirl separator, is a stormwater management device that uses cyclonic separation to control water pollution. They are designed as flow-through structures with a settling or separation unit to remove sediment and other pollutants.

  4. Water quality law - Wikipedia

    en.wikipedia.org/wiki/Water_quality_law

    Water quality laws govern the protection of water resources for human health and the environment. Water quality laws are legal standards or requirements governing water quality, that is, the concentrations of water pollutants in some regulated volume of water. Such standards are generally expressed as levels of a specific water pollutants ...

  5. United States environmental law - Wikipedia

    en.wikipedia.org/wiki/United_States...

    Environmental law is the collection of laws, regulations, agreements and common law that governs how humans interact with their environment. [2] This includes environmental regulations; laws governing management of natural resources, such as forests, minerals, or fisheries; and related topics such as environmental impact assessments.

  6. Clean Water Act - Wikipedia

    en.wikipedia.org/wiki/Clean_Water_Act

    The water quality regulations include an anti-degradation policy that requires states and tribes to establish a three-tiered anti-degradation program. Anti-degradation procedures identify steps and questions that need to be addressed when specific activities affect water quality. "Tier 1" requirements are applicable to all surface waters.

  7. Code of Federal Regulations - Wikipedia

    en.wikipedia.org/wiki/Code_of_Federal_Regulations

    In the law of the United States, the Code of Federal Regulations (CFR) is the codification of the general and permanent regulations promulgated by the executive departments and agencies of the federal government of the United States. The CFR is divided into 50 titles that represent broad areas subject to federal regulation.

  8. Outdoor water-use restriction - Wikipedia

    en.wikipedia.org/wiki/Outdoor_water-use_restriction

    The water industry usually places such restrictions on their customers during droughts or when the reservoirs supplying the water are becoming empty. Previously, contravening a temporary water restriction is a criminal offence in the United Kingdom under the Water Industry Act 1991 (though the first prosecution for "wasteful use of water" was ...

  9. Wastewater treatment - Wikipedia

    en.wikipedia.org/wiki/Wastewater_treatment

    One common process in wastewater treatment is phase separation, such as sedimentation. Biological and chemical processes such as oxidation are another example. Polishing is also an example. The main by-product from wastewater treatment plants is a type of sludge that is usually treated in the same or another wastewater treatment plant. [2]: