Source tag should only be used in changesets nowadays. If youneed to bulk import, a community discussion is required, does not matter how "local" you are.

https://wiki.openstreetmap.org/wiki/Import/Guidelines#:~:text=You%20must%20obtain%20proper%20permissions,can%20not%20use%20the%20data.

https://www.openstreetmap.org/way/66503603#map=16/41.27494/-76.43607