rob, koji, steve
We noticed some water (about a cup) on the floor under the NESLAB chiller today. We put the chiller up on blocks and took off the side panel for a cursory inspection, but found no obvious leaks. We'll keep an eye on it.
The culprit has been found: One of the bottles of chiller water had a tiny leak in it, and apparently the floor is sloped just right to make it look like the water had been coming from under the chiller. All is well again in the world of chilled water.