What is wastewater?
Nature has an amazing ability to cope with small amounts of water wastes and pollution, but it would be overwhelmed if we didn't treat the billions of gallons of wastewater and sewage produced every day before releasing it back to the environment. Treatment plants reduce pollutants in wastewater to a level nature can handle. If the term "wastewater treatment" is confusing to you, you might think of it as "sewage treatment."

Basically, wastewater is used water, however, it includes substances such as human waste, food scraps, oils, soaps and chemicals. In homes, this means water from sinks, showers, bathtubs, toilets, washing machines and dishwashers. Businesses and industries also contribute their share of used water that must be cleaned.

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1. What is wastewater?
2. Why treat wastewater?