व्हाट आर द वेरियस वॉटर ट्रीटमेंट प्रोसेस
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Wastewater is the polluted form of water generated from rainwater runoff and human activities. It is also called sewage. It is typically categorized by the manner in which it is generated—specifically, as domestic sewage, industrial sewage, or storm sewage (stormwater).
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