Originally Posted by ReddHead
There are some questions about the solder used and its safety for potable water.
Considering it is designed for farmers, it should be fine for potable water. I suspect most of the people that had problems got defective units. Four 1 stars vs 33 5 stars. It was interesting that one of the 3 star reviews the guy admitted he left the unit in water for months and it corroded and he ordered a replacement. Rather rare for someone to admit they messed up.
Should be fine for 3 gallons. 1000/1500 watts is typical for a 4-6 gallon water heater.
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