If your daughter gets no response on her own, I definitely think a parent should get involved. Test the dorm as others have suggested. Might make a good article for the student paper with the test results, if positive. That will get some attention. I’d get your daughter on it ASAP, and I’d skip the RA and go to the head of Residential Life as well as the person in charge of Facilities. Good life lesson on how and when to be a squeaky wheel.