storm·​wa·​ter ˈstȯrm-ˌwȯ-tər How to pronounce stormwater (audio)
: rainwater produced by a storm
a stormwater management system
As stormwater runs over lawns, streets and other man-made surfaces, it picks up pollutants—phosphorous and nitrogen from fertilizers, bacteria from pet waste and road salt, to name a few—and carries them into local streams and lakes.Delen Goldberg
This rainfall "of biblical proportions," as the local newspaper described it, swamped the city in waist-high stormwater.Christopher Cooper and Robert Block

Examples of stormwater in a Sentence

Recent Examples on the Web Milwaukee has a combined sewage system in which both stormwater and wastewater from homes and businesses flow through the same pipes before it is treated. Caitlin Looby, Journal Sentinel, 9 Apr. 2024 The program allocates about $280 million annually to stormwater capture projects, although recent reports have found that progress to date has been slow. Hayley Smith, Los Angeles Times, 4 Apr. 2024 The total maximum daily loads identified numerous possible sources for the bacterial contamination, including wastewater treatment plants, onsite wastewater treatment systems, camps of homeless people, dairies, ranches, horse facilities and municipal stormwater runoff. Richard Halstead, The Mercury News, 3 Apr. 2024 Black said hydroplaning has caused accidents due to speed and stormwater management. Chase Jordan, Charlotte Observer, 1 Apr. 2024 Some of the new concrete structures are equipped with bike racks, benches and even rain garden planters that help absorb stormwater runoff. Jeff McMurray, Fortune, 2 Mar. 2024 On a smaller scale, LADWP has been experimenting with turning parks into mini spreading grounds, diverting stormwater there to soak into subterranean cisterns or chambers. Matt Simon, WIRED, 19 Feb. 2024 But the state has also been criticized for missing out on opportunities to capture more stormwater and to recharge aquifers that have been drained by agriculture and drought. Hayley Smith, Los Angeles Times, 23 Mar. 2024 The city is using it to forecast breakdowns in its water and stormwater systems, based on factors such as age and condition of infrastructure, soil materials, and previous failures. Nick Rockel, Fortune, 19 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'stormwater.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1848, in the meaning defined above

Time Traveler
The first known use of stormwater was in 1848

Dictionary Entries Near stormwater

Cite this Entry

“Stormwater.” Dictionary, Merriam-Webster, Accessed 17 Apr. 2024.

Last Updated: - Updated example sentences
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