Committee flags 'closed‑loop' cooling as ambiguous, seeks clearer water‑use limits

Sep 16, 2026

A public commenter and members warned the term 'closed loop cooling' is broad and can describe systems that still move hundreds of thousands of gallons per day; the committee asked staff to draft a usable definition or a per‑day gallon limit to capture potential utility impacts.

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During public comment and discussion, a resident with cooling‑system expertise urged the committee not to rely on the industry term "closed loop," saying it can include high water‑use systems (one example cited: 100,000–300,000 gallons per day for an adiabatic system). The commenter recommended either a definitional approach or a specific gallon‑per‑day limit tied to facility size.

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