Wanderport Corp (WDRP)

[water boy]

Very good point. Those phenomena could happen when there are fluctuation in the water distribution system of your apartment, or your municipality due to changes in water quality, pipeline repair. Most of the time it would be scaling deposit-calcium carbonate compounding with other stuff etc. Normally this hiccup in the system would not last more than a few seconds. Having said that, in specific cases that water quality is really out of whack (MCL for iron concentration in potable water is 0.3 ppm), I see it may be something to look into as far as the efficiency.

Now, the concern of life expectancy of magnetron over the metal utensils or rust in this matter would be the extended periods of back-feeding R. F. energy, which raises the magnetron tube's filament temperature. In our case, the magnetron is submerged and water cooled. I do not think it would be a big concern, IMO.