5 volts between pool and patio

[ghostbuster]

Both of you guys are not understanding the relationship between a voltage drop in a service neutral or MGN and grounding to Earth. well I could write a book on this, but I will try to make it a short one.

first of all a good earth grounding does not really "attract this utility current" nor is it a magnet for the same, while yes it does allow more current to flow, but it also reduces the voltage level by lowering the resistance in the neutral between the service and transformer or between the transformer and the substation in the case of the MGN.
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I agree with most of what you are saying.The referenced articles however clearly show you that "stray utility current through water (an alternate utility ground current path ) sometimes-KILLS".It can occur at a marina,community swimming pool, backyard pool or the cottage lake.