No clear owner
Responsibility is often unclear between facilities and cleaners.
Break room ice machines belong to everyone, which in practice means they belong to no one.

Responsibility is often unclear between facilities and cleaners.
Dispenser-style units hide the interior.
Weekend and holiday standstills leave stagnant water.
Several shared units may have no unified maintenance record.
Basic Safety — Semi-Annual Service
Actual frequency should be adjusted for machine volume, water quality, surrounding environment and condition.