septic tank

noun

: a tank in which the solid matter of continuously flowing sewage is disintegrated by bacteria

Examples of septic tank 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.
Lawmakers have stymied solutions that experts say would reduce the chemical load, such as an inspection program to identify old, faulty septic tanks. Bethany Barnes, Miami Herald, 13 Jan. 2026 When stormwater dirtied by road runoff, failing septic tanks and fertilizer sullied crystal-clear rivers and lakes, and nobody cared. Orlando Sentinel Editorial Board, The Orlando Sentinel, 11 Jan. 2026 By breaking down quickly and efficiently in the septic tank, the toilet paper minimizes the contribution to the sludge layer. Timothy Dale, Better Homes & Gardens, 26 Dec. 2025 Director Daniel MacSweeney told national broadcaster RTE Friday that the second burial area is about 50 to 100 meters away from the septic tank. Kara Fox, CNN Money, 6 Dec. 2025 See All Example Sentences for septic tank

Word History

First Known Use

1896, in the meaning defined above

Time Traveler
The first known use of septic tank was in 1896

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Cite this Entry

“Septic tank.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/septic%20tank. Accessed 2 Feb. 2026.

Kids Definition

septic tank

noun
: a tank in which solid sewage is broken down by bacteria

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