Any recommendations for trusted plumber in Cincinnati for multifamily / apartment?

[Guy Azta]

Hello BP,

I own a small 13 unit building in Cincinnati, OH. About 2 months ago the water usage started going x2.5 to x3 the normal amount. Already had property management and an outside plumber checking the building and were unable to find anything.

Doe anyone here have a plumber you totally recommend for something like this? I'm suspecting some sort of a leak.

Many thanks!

GA