wastewater

noun

waste·​wa·​ter ˈwāst-ˌwȯ-tər How to pronounce wastewater (audio)
-ˌwä-
: water that has been used (as in a manufacturing process) : sewage

Examples of wastewater in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Presently, agricultural and industrial wastewater runoff often contains large amounts of nitrate. Christopher McFadden, Interesting Engineering, 10 May 2026 The study notes that roughly half of the United States' nearly 15,000 wastewater treatment facilities use anaerobic digestion, a process in which microbes break down sewage sludge in oxygen-free conditions to reduce waste volume while producing biogas. New Atlas, 9 May 2026 In areas surrounding the city’s textile clusters, wastewater from dyeing units flows through open drains that cut across farmland and residential neighborhoods. Ayushi Shah, CNN Money, 9 May 2026 The 6-foot pipe, which transports 10 million gallons of wastewater a day, is nearing the end of its life and needs to be rehabilitated and eventually replaced, OC San officials said. Claire Wang, Oc Register, 8 May 2026 See All Example Sentences for wastewater

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of wastewater was in the 15th century

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Cite this Entry

“Wastewater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/wastewater. Accessed 14 May. 2026.

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