When the water quality deteriorate due to various reasons discussed above. Causes affecting environmental systems. For example, 1. agricultural waste water which affect the agriculture caused by industrial wastewater. That is the acid-alkaline, high. When it is released into water bodies without treatment. So it is with proper planting and growth of plants and animals. 2. fisheries Toxic substances contained in water may cause the fish, shrimp, shellfish aquaculture, such as gradually reducing the number of post, because it can not tolerate the acid. Waste water containing very toxic substances will cause fish to die immediately but are caused by the waste water to reduce the amount of oxygen in the water, the fish will gradually reduce the number down. As a result, black fish is fish a large number. Make fish food sources, and the toxins in fish, it is not appropriate to remove the quality of consumed.3. industry. Water is regarded as a critical raw material in industrial operations. If the water quality in the water source. Prior to use, it must be to improve the quality. Make free of charge increases. In addition to the expense to repair equipment. The machine is damaged because of water quality. 4. the water to supply-consumer Impact production waste water of water supply When the supply water water quality reduced spoilage occurs, make the expense cycle, production increased to drinking water standards. Choosing a water source to the consumer, it's more difficult. 5. the economic and social Wastewater from factories. The hospital. Market restaurant. The community is free of charge for wastewater plant, which affects the economy and society since the nasty odor and often also refers to a small house. 6. the public health hazard waste water and hygiene of the people. Epidemic such as dysentery caused by the ahi WA plain water as a vehicle, and the waste water from factories, six with UMA can toxic adulterated cause serious disease. Destroy the health of people in both direct and indirect, such as kidney disease, Mika Izumi-Izumi Panama Ta Tai rotten smell foul sewage. lack of oxygen. People need to breathe air is not the area to remove the Virgin. Unhealthy body Those who use water for water source, there may be a rash and diarrhea are toxic to them when in the water. All of the marine toxin accumulating Time people bring animals consumed was harmful to health, as well as the odor causing a nuisance mosquito breeding sources as the source of the disease and the spread of toxins that are poisonous, it affects the nervous system. 7. tourism and recreation because some water sources as a tourist attraction, such as sea Lake of dirty rotten if it will affect tourism, causing the annoyance from the stink. The waste water is not therefore affect its beauty and relaxing sea Lake is beautiful, clean, it will take a lot to make tourism growth.
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