PVC Casing Question

I need other mechanics to consider this and answer this odd question. We are replacing a 4 story jack. Pulled the jack, and had a super-sucker company suck out the hole (had a 2 ft. culvert casing). Water is coming into the hole, at a moderately rate. We put in 37ft PVC (12in). By the time we had it down, it is floating 10 ft up. Now mind you its completely glued, encapsulated, and no leakage. Here's the question. If we add clean water into the interior of the PVC have we destroyed or damaged the intention of code about sealing out electrolysis, and other underground issues.
I've been laughed at for believing that the interior, added water is completely safe for the jack casing since it is isolated from any electrical current, and doesn't have exposure to oxygen.
Tell me where I'm right, or wrong.