I guess the fast food place is really close to where you work? How do they afford to offer this? Like they get bulk sanitized water, or have their own filtering system? Or is it safe to just boil and use?

It's a 15 minute walk or a 5 minute ebike ride, but the rideshare moped costs an extra 15 cents each way. But the fast food place is all over China so it's available whatever city I picked that month.

They have a filtering system, I can boil water, but then I don't get free coffee.