@David-Henry0
If you are unable to host upcoming guests, ask airbnb to cancel penalty free, because of previous guest damage, so you can work with Airbnb to cancel the guests booking so Airbnb can help them find alternative accommodation and process your claim.
I presume you have already familiarised yourself with putting in a claim through the Airbnb guarantee for the damages guests have caused and have video and photo evidence of said damage. You can of course include the plumbing costs, but it is up to Airbnb to decide how much of your claim they will pay out on.
If the guests don't reply to your claim/refuse to pay Airbnb will review and let you know what part of your claim will be paid out.
Speak to Airbnb but I think there is some provision in the guarantee if you have to cancel future guest bookings because of the damage.
Make sure you get an invoice for the extra cleaning, plumbing etc to submit.
Do make sure you leave an honest review of these guests to warn future hosts.
Not quite sure what you mean by this could negatively impact on your attempts to get superhost status.