The University of Wisconsin-Madison spent $15.8 million responding to a major chilled-water pipe rupture that disrupted air conditioning across campus this summer, the university said Thursday, Oct. 8. The 4-foot-wide pipe, buried about 20 feet underground near the Charter Street Heating and Cooling Plant, broke in June. The chilled-water system supplies cooling to much of campus. The university estimates that repairing the pipe cost about $1.8 million. Temporary chillers used to keep buildings cool cost roughly $10 million, and addressing additional deterioration in the area is expected to cost about $4 million, Lori Wilson, a spokesperson for UW-Madison’s Division of Facilities Planning and Management, said in an email. UW-Madison and the state are still investigating what caused the break, Wilson said. On Thursday, the University of Wisconsin System Board of Regents voted to reallocate $40 million to expand the budget for a related UW-Madison utilities project on Engineering Drive. The additional funding is intended to help cover the summer expenses and other repairs.