Look inside the radiator while the engine is running if the pump is good you will see the fluid swirling or at least moving around, if the shaft is difficult to move or there is play in the shaft then the bearings are going bad, if there is coolant seeping out of the weep hole, coolant seeping or leaking from the gasket, if when running with the cap on the hoses never stiffen up ( pressurize ), Overheating issues that cannot be tracked down to the radiator or thermostat, coolant flow is not vigorous.
Water pump needs replacing
Your cylinder head gasket needs replacing.
The plumbing in my house needs replacing. Which is the best hot water heater on the market?
probably a water heater.... {BMF}
If you are turning the head part continuously and the water is not turning off then the head part has stripped and needs replacing
It won't stop suddenly, but will reduce the flow so you get less and less water.
There are several possibilities. The 2 most common would be the water heater needs replacing, or you need a repipe.
It means your ball float valve inside the cistern either needs adjustment or replacing
the bearing in the water pump has gone bad! needs replacing!will start leaking soon!
Water worker sounds like one of those Big Box brands. Chances are it's bad and needs replacing.
Water
A submarine hatch can be opened fairly easily if the submarine is filled with water because the water pressure on each side of the hatch is equalized.