Other causes of ectropion are scarring, burns, trauma (called cicatricial ectropion), spasm of the orbicularis muscle, which may affect either the upper or lower eyelid, or paralysis of the orbicularis muscle in which only the lower eyelid is affected.
It is possible that there is nothing wrong with your water heater. There is a pressure relief valve on top that may be releasing water because your primary water pressure reduction valve for the house is worn out. The fact that the leak is intermittent suggests this.
If the water heater is old and corroded, cleaning the sediment from the water and sanitizing by chlorination could cause the water heater to leak. Procedure for Sanitizing of Hot Water Heaters to Eliminate Odors. 1  1. Turn off the manual switch if the water heater is electric. 2  For gas heaters, turn the control to Pilot.