For a busy family dealing with hard water, go with a high-quality fireclay...

https://farmhousekitchenandbath.com/blogs/news/the-best-kitchen-sink-material-for-every-home-style-a-complete-comparison

For a busy family dealing with hard water, go with a high-quality fireclay sink. These beauties resist scratching, staining, and thermal shock better than anything else