Remediation arrived today and will put dehumidifiers in the space.

Let's say it leaks for days before detection, lots of water damage to kitchen cabinetry/floors, and it's determined the new water filter system was the culprit.Now the owner is trying to collect to remedy damages. 

And it'll be remedied by a more rate cuts or a larger rate cut about 8-16 weeks after that.

When they are breached, many remedies that apply in regular contracts can apply.

Your enforcement remedies under law are: 1) deliver a notice to pay per F.S. 83.56(3), 2) make a claim on the security deposit when they vacate per F.S. 83.49, and 3) seek collection of unpaid rent through lawsuit or collection company. 

The possibility of injunctive remedies in Texas courts should also be taken into account.

The general rule is that if a tenant has breached the contract or is in default of payment, the landlord is not obligated to remedy.

You really want to make sure that the land you are buying doesn't have any major constraints that can't be overcome, or even if they can be remediated, at what cost, i.e. environmental, soils/geotechnical, adequate access, zoning, etc. 

If not, then you have no legal remedy against the "problem tenant". 

Payment of the fee, charge, or other sum of money by a tenant does not waive the right or remedies provided by this section.Breach of lease agreementIt is a common principle that a contract must be followed in good faith by the parties.