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Geothermal Heat Exchange Wells - Well Standards In all geothermal heat exchange wells that use a groundwater source heat exchange system with either an open or a closed loop, well construction and destruction shall conform to the water well standards prescribed in DWR Bulletin 74-90 and subsequent revisions
California Water Code section 13800. 5 (2025) (1)The department shall develop recommended standards for the construction, maintenance, abandonment, or destruction of geothermal heat exchange wells
Well Standards - Department Of Water Resources DWR Bulletin 74 sets the minimum standards for water, monitoring, cathodic protection, and geothermal heat exchange wells, with the purpose of protecting California’s groundwater quality
California Well Standards, Combined - Department Of Water Resources To facilitate its use, DWR has combined the contents according to Table 1 (B74-90) of Bulletin 74-90 and made minor modifications in wording and formatting to improve readability, listed in the Modification List below
TAC Plenary #4 Meeting Summary - Department Of Water Resources Your participation has guided us in developing effective and protective well standards for California Thanks to our State agency partners, the Facilitators, the entire Bulletin 74 Team (staff and consultants), and Julie Haas, our Project Manager
DRAFT - Department Of Water Resources In all geothermal heat exchange wells that use a groundwater source heat exchange system with either an open or a closed loop, well construction and destruction shall conform to the water well standards prescribed in DWR Bulletin 74-90 and subsequent revisions
UPDATE on a “Ground Heat Exchange Well” Standard In February of this year, the DWR embarked on a well-thought out, organized, and now well-funded effort to revise four of California’s Well Standards: water, monitoring, cathodic protection, and ground heat exchange wells