This legislation aims to enhance the regulation of hydraulic fracturing by repealing its exemption under the Safe Drinking Water Act. This change would bring hydraulic fracturing operations , including those for oil, gas, or geothermal production, under the federal underground injection control program, ensuring greater oversight of these activities. The bill specifically excludes the underground injection of natural gas for storage from this new regulatory scope. A key provision of the bill establishes new requirements for the disclosure of chemicals used in hydraulic fracturing. Operators would be mandated to provide a list of intended chemicals before operations begin and a list of chemicals actually used within 30 days after completion, including chemical constituents, CAS numbers, and volumes. This information must be submitted to the relevant State authority or the Administrator and subsequently made available to the public, though proprietary chemical formulas are generally protected from public disclosure. Furthermore, the legislation addresses medical emergencies by requiring immediate disclosure of proprietary chemical formulas or specific chemical identities of trade secret chemicals to treating physicians or nurses when deemed necessary for medical treatment. This immediate disclosure is required upon request, even without a prior written statement of need or confidentiality agreement, although such documentation may be requested afterward. This ensures that critical information is available to healthcare providers in urgent situations.