Greetings RW Harvesters, and
Best Wishes on World Plumbing Day

https://www.daysoftheyear.com/days/world-plumbing-day/
https://www.worldplumbing.org/activities/

I can’t think of a better day to end forever, the use of Galvanized Plumbing to conduct water, and move on to stainless steel, PEX, and HDPE.

The photo above is a text-book example of failure, of a galvanized coupling.

Ground water, and particularly rain water because of its ‘hungry’ nature, will corrode galvanized fittings, more rapidly than you might think, and contaminate your system.
https://www.quora.com/Why-is-Demineralized-and-Deionized-water-often-referred-to-as-hungry-water-What-makes-it-hungry

In the example below, the situation is compounded by the dissimilar metals, galvanized steel and stainless, being in contact.  https://en.wikipedia.org/wiki/Galvanic_corrosion

The cost of a 1″ galvanized coupling at HomeDepot is $3.75, and the cost of a 1″ stainless steel coupling is $2.74 to $4.99 ….. imagine that.

Happy Plumbing for a Clean Water Future,
Terry Raines
512-466-4319
https://raineswaterharvest.com/