Castle Dale City Council minutes of 12 March 2026 record Valar's director of Utah operations, Jess Housekeeper, saying 'The reactor requires minimal water—about 10 acre-feet for industrial use' and that it mainly uses helium cooling. The minutes give no time period for the 10 acre-feet. If it is a yearly figure, 10 acre-feet is about 3.26 million gallons, or roughly 8,900 gallons a day on average. DOE's categorical exclusion for Ward 250, signed six weeks later (22 April 2026), describes water use only as 'less than 1000 gallons/day for domestic use', says no process water is discharged and that sanitary waste goes through the lab's infrastructure, and does not mention any industrial water use. The utility district's minutes say Valar asked for restroom sewer service only, with no process water (loc-015). The figures may describe different things (the reactor alone versus the whole site with its fuel laboratory, consumption versus a water-right allotment, or a yearly versus a one-time amount); no record read reconciles them. Separately, Valar says it holds the shares for its current needs and seeks up to 1,000 more for future development (loc-017).

• Castle Dale City Council Meeting Minutes, March 12, 2026 (approved; scanned, read as page images) (Castle Dale City, 2026-03-12) primary government “The reactor requires minimal water—about 10 acre-feet for industrial use”
• NEPA Determination DOE-ID-26-005: Valar Ward250 Research Reactor (categorical exclusion B5.26) (U.S. Department of Energy, Office of Nuclear Energy, 2026-04-22) primary government “Water consumption is less than 1000 gallons/day for domestic use.”
• CVSSD Regular Meeting Minutes, March 19, 2026 (approved) (Castle Valley Special Service District, 2026-03-19) primary government “standard sanitary sewer service only for restrooms, with no process water proposed”