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.
Other companies discharge the residual liquid with other wastewater. Dorany Pineda, Fortune, 2 May 2026 Other companies discharge the residual liquid with other wastewater. ABC News, 1 May 2026 In a message sent to the Boise School District community, Central District Health alerted residents that officials had an isolated detection of measles virus RNA in wastewater collected in Ada County on April 22. Shannon Tyler, Idaho Statesman, 1 May 2026 Xefco claims the process slashes energy use by 90 percent, cuts emissions by up to 94 percent and produces zero wastewater. Alexandra Harrell, Footwear News, 30 Apr. 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

Browse Nearby Words

Cite this Entry

“Wastewater.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/wastewater. Accessed 6 May. 2026.

More from Merriam-Webster on wastewater

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster