A Bitcoin mining facility in El Reno, Oklahoma, has been condemned after an estimated 3.8 million gallons of water leaked from an unpermitted fire hydrant and suppression system, affecting nearby schools, businesses, and the county courthouse. The leak occurred despite a stop-work order issued by the city in 2023, which was never enforced. According to the facility's operator, the water did not come from cooling equipment, which is commonly used in mining operations, but from a private fire hydrant and suppression line that was not approved or recorded by the city. The property is owned by Athlon BT, a company listed in local records as operating data centers for AI storage and Bitcoin mining. Its structures are described as mobile mining containers, which are modular units often used in cryptocurrency mining operations. The company, which identifies itself as "Athlon Blockchain Technology Corporation" on its website, is currently undergoing "scheduled maintenance" and has faced criticism for installing a hydrant without notifying the city. The hydrant was reportedly hidden under a pile of brush and does not appear in any municipal records. The city issued a stop-work order in June 2023, citing multiple violations, including expired permits and safety issues. The order gave Athlon until December 2023 to comply but was not followed up on. As a result, the company continued construction and, according to city officials, began operating without a certificate of occupancy. Locating the company’s leadership has proven difficult, as county records list Athlon’s address as an abandoned house in El Reno, with no response to media inquiries or emails sent to the founder and CEO, Tony Jiang Shi. In response, the city has condemned the property, issued a ten-day abatement notice requiring the company to clean up the site, and scheduled an administrative hearing for September 14, 2026. The situation highlights concerns over regulatory enforcement and the challenges of managing unregulated industrial operations in residential areas.