Yes, this sounds like coolant from a cooling system that has been neglected and not flushed and changed regularly. Have the leak fixed, a new thermostat installed, a fresh mix of 50/50 coolant installed, and bleed the system.
Check where this rusty water is coming from. There are many possible causes.
The rusty tussock moth (Orgyia antiqua)
The radiator fluid goes through your heater core (usually behind your dash) and supplies the vehicle with heat. If your radiator fluid isn't rusty in your container under the hood then your lines might be clogged up and now they are breaking and letting the old rusty fluid come through.
See saturnfans.com Barnowl posted a home made procedure for radiator flushing.
Sounds like you have a leaky heater core. You will need to replace the heater core and give the cooling system a good flushing, it shouldn't be rusty.
Meadowlark, yellow headed, rusty, Brewer's, Grackles, cowbirds, orioles.
lack of proper care. lack of proper (distilled) water in the radiator.
the hoses leading to and from your radiator might be clogged. If you had a rusty radiator, the rust may have clogged the hoses that carry the coolant. you should check all your hoses and even flush them out.
Normally a rusty rotor would not make a grinding noise. A grinding noise from the brakes usually indicated that the pads or shoes are worn down.
spray WD40 ON IT
You would get a light rusty orange color because of mixing the pastels.Hope this is helpful!! :)
Number one, replace the water pumb. Usually when water leaks from the pump it is through what is called a seep hole and signifies the pump is bad. That brown fluid is probably water with alot of rust mixed in it. Good idea to have the radiator flushed and filled with new coolant. rusty water, change the water pump