Celatom

Brand · part of U.S. Silica (EP Minerals)

Diatomaceous earth (DE) filter aid for pool DE filters.

Website	www.ussilica.com ↗
Category	Other
Parent / owner	U.S. Silica (EP Minerals)
Ownership	Subsidiary
Country	United States
Known for	Diatomaceous earth (DE) filter aid for pool DE filters.

Company Timeline

Date	Event
1916	Eagle-Picher is formed via merger; it later mines the Nevada diatomaceous earth behind Celatom.
1945	The company acquires diatomaceous earth deposits outside Reno, Nevada, the source of Celatom DE.
2018-05-01	U.S. Silica completes its $750 million acquisition of EP Minerals, maker of the Celatom DE filter aids.

Sources

https://www.ussilica.com/

Last updated 2026-06-24 · Next review 2026-07-24

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