The Water Quality Control Policy for the Enclosed Bays and Estuaries of California is published by the California State Water Resources Control Board as guidelines to prevent water quality degradation. The policy is revised as needed. [1]
The Pacific coast of California has few natural harbors in comparison to similar lengths of the Atlantic coast of the United States. [2] Humboldt Bay, Bodega Harbor, Tomales Bay, Drakes Estero, San Francisco Bay, Morro Bay, Los Angeles - Long Beach Harbor, Upper Newport Bay, Newport Back Bay, Mission Bay, and San Diego Bay are identified by the policy. The policy also applies to smaller areas of ocean water within headlands or harbor works when the distance between those features is less than 75 percent of the greatest dimension of the enclosed portion. [1]
Mixing zones for fresh and ocean waters at the mouths of the Smith River, Klamath River, Mad River, Eel River, Noyo River, Russian River, and Sacramento–San Joaquin River Delta are identified as estuaries. The policy also applies to coastal lagoons and mouths of streams temporarily separated from the ocean by sandbars. [1]
The sheltering features making harbors favorable for ocean transportation cargo transfer [3] limit mixing and dilution through surf action and ocean currents. [4]
Harbors were important foci of early European American settlement of California; and cities have developed adjacent to the larger ones. [5] Unique aquatic ecosystems of limited geographical extent [6] have been impacted by waste disposal practices. [7] The Clean Water Act of 1972 established regulation for discharges of pollutants into water. Under the CWA, the Environmental Protection Agency (EPA) has developed water quality standards as well as regulation programs. Each state was able to set their own standards of water quality for each body of water, as well as establishing their own technology standards. [8] The California Bays and Estuaries Policy served as part of the water quality standards in effect for the CWA.
The Bays and Estuaries Policy adopted on 16 May 1974 concluded discharges of municipal wastewater and industrial process water should only be allowed when such discharges enhance the quality of the bay or estuary. The policy called for the entirety of closed bays and estuaries in California to extract toxic substances present in the waters, while coming up with unproblematic methods of discharging these wastes. [9] Along with being compliant with the limitations this policy had set up, it also sets the expectation for further compliance with existing acts, such as components of the Porter-Cologne Water Quality Act and the "Water Quality Control Plan for Control of Temperature in the Coastal and Interstate Waters and Enclosed Bays and Estuaries of California of 1972. Exceptions for waste disposal were made for San Francisco Bay and for cooling water discharges at other locations. The policy was revised 16 November 1995. Revisions were to amend Section 1b of the policy. It allowed specific exceptions to the original prohibition of wastewater discharges to the San Francisco Bay, south of Dumbarton Bridge under the premise that a series of qualifying findings were met. [10]
As of recently, the United States has taken a leap to restore estuary habitats in 2000 with the Estuary Restoration Act (ERA). The ERA aims to promote restoration through leveraging public-private relationships while also monitoring economic impacts of restoration. [11]
The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it began operation on December 2, 1970, after Nixon signed an executive order. The order establishing the EPA was ratified by committee hearings in the House and Senate. The agency is led by its administrator, who is appointed by the president and approved by the Senate. The current administrator is Michael S. Regan. The EPA is not a Cabinet department, but the administrator is normally given cabinet rank. The EPA has its headquarters in Washington, D.C., regional offices for each of the agency's ten regions, and 27 laboratories. The agency conducts environmental assessment, research, and education. It has the responsibility of maintaining and enforcing national standards under a variety of environmental laws, in consultation with state, tribal, and local governments. It delegates some permitting, monitoring, and enforcement responsibility to U.S. states and the federally recognized tribes. EPA enforcement powers include fines, sanctions, and other measures. The agency also works with industries and all levels of government in a wide variety of voluntary pollution prevention programs and energy conservation efforts. The agency's budgeted employee level in 2023 is 16,204.1 full-time equivalent (FTE). More than half of EPA's employees are engineers, scientists, and environmental protection specialists; other employees include legal, public affairs, financial, and information technologists. Many public health and environmental groups advocate for the agency and believe that it is creating a better world. Other critics believe that the agency commits government overreach by adding unnecessary regulations on business and property owners.
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Water pollution is the contamination of water bodies, usually as a result of human activities, so that it negatively affects its uses. Water bodies include lakes, rivers, oceans, aquifers, reservoirs and groundwater. Water pollution results when contaminants mix with these water bodies. Contaminants can come from one of four main sources: sewage discharges, industrial activities, agricultural activities, and urban runoff including stormwater. Water pollution is either surface water pollution or groundwater pollution. This form of pollution can lead to many problems, such as the degradation of aquatic ecosystems or spreading water-borne diseases when people use polluted water for drinking or irrigation. Another problem is that water pollution reduces the ecosystem services that the water resource would otherwise provide.
The Clean Water Act (CWA) is the primary federal law in the United States governing water pollution. Its objective is to restore and maintain the chemical, physical, and biological integrity of the nation's waters; recognizing the responsibilities of the states in addressing pollution and providing assistance to states to do so, including funding for publicly owned treatment works for the improvement of wastewater treatment; and maintaining the integrity of wetlands.
Arcata Wastewater Treatment Plant and Wildlife Sanctuary is an innovative sewer management system employed by the city of Arcata, California.
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Best management practices (BMPs) is a term used in the United States and Canada to describe a type of water pollution control. Historically the term has referred to auxiliary pollution controls in the fields of industrial wastewater control and municipal sewage control, while in stormwater management and wetland management, BMPs may refer to a principal control or treatment technique as well.
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Nutrient pollution, a form of water pollution, refers to contamination by excessive inputs of nutrients. It is a primary cause of eutrophication of surface waters, in which excess nutrients, usually nitrogen or phosphorus, stimulate algal growth. Sources of nutrient pollution include surface runoff from farm fields and pastures, discharges from septic tanks and feedlots, and emissions from combustion. Raw sewage is a large contributor to cultural eutrophication since sewage is high in nutrients. Releasing raw sewage into a large water body is referred to as sewage dumping, and still occurs all over the world. Excess reactive nitrogen compounds in the environment are associated with many large-scale environmental concerns. These include eutrophication of surface waters, harmful algal blooms, hypoxia, acid rain, nitrogen saturation in forests, and climate change.
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The California State Water Resources Control Board (SWRCB) is one of six branches of the California Environmental Protection Agency.
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Point source water pollution comes from discrete conveyances and alters the chemical, biological, and physical characteristics of water. In the United States, it is largely regulated by the Clean Water Act (CWA). Among other things, the Act requires dischargers to obtain a National Pollutant Discharge Elimination System (NPDES) permit to legally discharge pollutants into a water body. However, point source pollution remains an issue in some water bodies, due to some limitations of the Act. Consequently, other regulatory approaches have emerged, such as water quality trading and voluntary community-level efforts.
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