Just reading this nearly caused me another stroke. Galvanized steel for drinking water supply, actually galvanized anything for the purpose of human consumption, is an absolute NOT. I grew up in the Midwest and this is a practice that has been banned for many decades. It is the equivalent to lead in house paint or gasoline and is an extreme danger to children. Within the past decade, I had to pickup a load of interstate highway signage support posts which are those systems that are on every interstate highway in the U.S. that has the huge green signs that tell you where you are and where you are going to. These steel posts are dipped in galvanizing solutions to make them weatherproof / rust resistant. After getting loaded and securing the load, I wondered what they felt like, and I persisted to pet them with my bare fingers. After I hit the highway, in less than 20-miles I began to feel weird (more so than normal), and within 70-miles I had a stroke, the kind you don't die from but wish you did. I cannot believe this is what was used in your home and ultimately surprised this didn't cause you massive headaches for no reason, or other serious health concerns. My current home / 5th wheel RV trailer, is entirely plumbed with PEX plastic which for the kitchen sink is currently frozen solid two days in a row now due to single digit temps, the fact is I don't have to worry about it affecting my health. And yes, it is frozen solid for now but no risk of bursting because PEX can expand. By tomorrow, it should thaw out and I'll have my kitchen sink back to normal again. Can't wait for winter to be over, as I'm sick of this damned cold weather. Normally this time of year I'm in Palm Springs, CA for my six-week vacation which I've done for the past 14-years, but right now I can't afford the trip due to change in jobs and major reduction in pay. Even Key West, FL is now outside of my budget which is another of my hangouts. Being gay and broke just doesn't go together, but it's my new reality.