369961
The facilities have high-powered disposal equipments which are developed by related industrial companies to maintain the final discharging water as the first or second degree water in quality , so that it is used as river maintenance flow and agricultural water in case a drought occurs .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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