The next step is probably to trace where water should be entering the pipe system. Which means tracing the pipes. The easiest way to do this is probably to bring in re-inforcement - he's going to fetch their dowser Niketas (grog character sheet here: https://forum.atlas-games.com/t/covenfolk-character-sheets/5242/1) and instruct him to find where the pipes leave the covenant site by dowsing out the bronze in them. Relevant scores are Per 3 + Dowsing 5 + die (probably simple?), so he can probably do it with time but not major difficulty. That's fine - Gregorius would like this done, but isn't in a major hurry, so he can wait until dusk to deal with his sensitive sight.
Once the line of the pipes leading away from the covenant has been found, Gregorius will set out on a cloudy day with Niketas, Alcimus and Aison as a shield grog to follow them to their source.
He also leaves a wax tablet with a message for Viola should she come out of her regio and care where he's gone.
[i]Viola - talking with Theodoric has indicated that the previous magi may have improved or stablised the aura here by getting the fountains going again. Not sure what the connection between the two is yet. The pipes don't appear to be broken or blocked, so I've gone to try to find their starting point to see if the problem is water not entering there.
Gregorius[/i]
Edit - actually, he'll take Godzimir rather than Aison as a shield grog - he he does at least have Latin 3 rather than 2.