Place I worked at had a dedicated tooling checking and storage building about 75 - 100 yds from the main factory with a asphalt paved road to it for all season access. It was maned 24/7 so it had a small lavatory with just a sink, commode and a small water heater, a refrigerated water fountain and the whole building was heat via steam. The plumbing for both the cold water feed line and steam ran under the asphalt from the main building. Apparently the heat build up from the sun on the asphalt over that distance and/or the steam and water line were buried too close together caused the cold water feed to get really hot in the lavatory. So hot that you would shortly be sweating streams just from the heat put off from the water in the toilet. You learned real quick not to flush while still sitting on the commode, too.
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