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The only deduction that you might have would be casualty loss, and unfortunately, this situation does not seem to fit the definition of casualty. You had to repair the water pipe, but this was the result of a leak. A casualty be defined is a sudden, unexpected, and unusual event. A leak is not a sudden event. If you had non-reiumbursed damage to your property that was caused by fire, flood, earthquake, hurricane, etc. then this would be a casualty for tax purposes. Since the cause, the timing, and the source of the leak are unidentified, the IRS would not allow this as a casualty deduction.
I realize that this is not the answer you are looking for, but unfortunately it is a nondeductible personal loss. Here are some references for you: