Only if there is a break in the supply line or the impeller housing would this happen.
Only if if has a leak.
Yes it could.
The most common cause of overheating is a thermostat stuck in the closed position. Other causes of overheating could be a clogged radiator, faulty water pump, a faulty radiator fan relay, a faulty radiator fan motor, no coolant or low coolant level.
Anything toxic can cause ground water contamination if poured on the ground.
The substance in ground water might cause the water to have an unpleasant odor is "Sulfur".
no
Normally it causes a lower reading then higher
Could be, worn bearing/seal in water pump, loose hose clamp, faulty hose, faulty radiator, faulty gaskets, faulty heater core, faulty freeze plugs in engine block, faulty radiator cap, cracked cylinder head,
ground water can cause erosion through chemical weathering
you have a faulty heater core.
A malfunctioning water heater can cause hot and cold water to surge through the shower heat. A faulty water pump can also cause this problem.
an arm