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wastewater

American  
[weyst-waw-ter, -wot-er] / ˈweɪstˌwɔ tər, -ˌwɒt ər /

noun

  1. water that has been used in washing, flushing, manufacturing, etc.; sewage.


Etymology

Origin of wastewater

1400–50; late Middle English waste watre

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Several fire survivors in this situation told The Times that they feel torn between planning for an upgrade to county-run sewers, or just moving ahead with rebuilding and improving their onsite wastewater systems.

From Los Angeles Times • May 15, 2026

Tough water-quality rules are straining its wastewater plants, and it has been considering an expensive upgrade at one of them.

From The Wall Street Journal • May 14, 2026

The modified algae also grow in wastewater, where they absorb excess nutrients while helping clean the water during the process.

From Science Daily • May 12, 2026

This was particularly important in connection with underground activities like excavation and extraction, he said, pointing for instance to quakes triggered by disposal of wastewater from the fracking industry in Texas.

From Barron's • May 11, 2026

“Dusty’s crew didn’t pump the wastewater into the basin. They hooked up to a sewer tank onshore.”

From "Flush" by Carl Hiaasen

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