Per this some evidence of aweeps may be normal. Don't think many folks do inspect their holes unless a leak is suspected.
Why They Weep
Coolant has a specific role as it relates to the water pump’s seal. To keep a pump’s rotating seal faces from overheating and failing, the seal must consistently be “wetted” by coolant. Coolant absorbs heat from the seal faces and provides face lubrication. During this “wetting” process, a small amount of coolant passes the seal faces and exits the water pump through a small hole known as a weep hole. This process is known as weepage. Over time, weepage results in staining and discoloration on the pump housing around the weep hole. At times, a drop or two of coolant may even hang off of the pump or fall to the ground. These situations could often be misinterpreted as evidence of a leak, resulting in a premature water pump replacement.
The weep hole means it is in need of replacement. The seal is going out. Anytime we had a car come in with the water pump leaking there it got replaced. Think of it as an indicator things are going bad.
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