I have a similar experience from waaaaay back (now near 30 years). We had a water leak in the basement of the institute of physics. Nothing terribly major, ran

I have a similar experience from waaaaay back (now near 30 years). We had a water leak in the basement of the institute of physics. Nothing terribly major, ran for a few hours shorted power downstairs eventually (that's how it was found). Once fixed, pumped out, all that remained was a musty smell for a few days. Except four days later network connection failed in the building. Tracing the cabling eventually lead us to the basement; some under-stairs / slightly below floor level comms cabinet, empty other than the building's outbound router. 48V Telco, no mains connect, had sat under"water" (well some rather murky stuff) for almost a week and done well. Once we got it washed (with clear water) and dried, it continued fine (till replacement a few weeks after). We were a little amazed, to be honest, physicists or no. Brave device, that.