<human>: 3 months ago I moved into a basement unit apartment. I have now discovered that if anything is leaned up against walls (furniture, decor, unfinished art projects, ect.) black mold will grow. I expect a little bit of mold here and there, seeing as its a basement apartment, but this is getting out of hand. Its even growing on my guitar case. We also have the worst water ever, its yellow (think of that scene in Walk the Line when Johnny makes a comment about the prisoners having to drink 'yellow water') and when we turn our baseboard heaters on they reek of cat pee. I am a clean person and we try to keep the place ventilated, but it's winter and hard to keep windows open especially when the heaters are covered in cat piss.

What measures can be taken with the rental company to see these things fixed?

Also im almost paying half a grand a month to live in this shit hole.

Summarize the given text in a few sentences.
<bot>: Mold, yellow water, cat pee (I don't own a cat) Is taking care of any of this the landlord/rental-company's responsibility to fix?