Which organization noted the centennial of the activated sludge process for its nearly century-long service in California?
Answer
California Water Environment Association
The California Water Environment Association recognized the centennial of the activated sludge process, highlighting its long-term reliability and importance in the state. This recognition reflects the global spread of the technology, which originated in the UK but became a standard for secondary treatment in many jurisdictions, including California, where it has served for nearly a century.

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