When we first moved in (10 mo. ago) he knew there were plumbing issues because the house wasn’t winterized properly (pipes burst) and he sent a plumber out and the plumber told him (in my presence) what was wrong. The plumber was to come back the next day and repair the minor problem but he also told us some other areas that would eventually go wrong so we mentioned it to the landlord later the next day and when the plumber came back he said that the landlord chewed his butt about telling us what would eventually go wrong. So the plumber told us that whatever he tells us we can’t tell the landlord he said it. So now the landlord says that its at his discretion as to whether or not he will repair the plumbing issue especially since we’ve been late on our rent recently (we paid late fees & now we’re current). According to the lease it says any repairs over $200 the landlord pays it does not say at his discretion if that be the case we will never get any repairs made because I’m sure the discretion will never be in my favor. Should I pursue this matter?

It may be at his discretion. Will the issues in the plumbing make the unit uninhabitable? If so then he does have a legal obligation to get those issues fixed. Check with the local code/building inspector to see if he is responsible for those issues. If they say he needs to bring those issues to code then you have a leg to stand on. Also check with the state that you live in to see what your rights are as a tenant and what avenues of resolution you have.