Just because you're the landlord doesn't mean you have any idea what you're doing.
You would scream like that too if you knew the things it's seen.
It can be really draining.
From the submitter:
the canister did not fit under the faucet..... So we made an adapter from a wash mitt, a tube and tape.
But still worse than pretty much any other option. ~Not-So-Handy Andy
Metric water? Not in my country!