[spdustin]

Building are different in different countries, and other geopolitical divisions. The UK authorities, for example, say it's safe to shower during a storm as long as your plumbing has been properly integrated into a standards-compliant equipotential bonding, noting that said standards change over time. So, you'd have to know them and trust/verify the builder followed them.

Or, you know, just wait a while and enjoy the show.

Whatever. You do you.