Deductions

I have a partnership LLC.

 

Is the water I drink while on the job tax deductible? If so, 100% or 50%? I have a mobile detailing business and need to stay hydrated at all times. 

 

Are the shoes I buy to detail in also tax deductible?

 

Are my cell phone, and wifi bills a tax deductible to a certain extent? For example if I use each about 40% of the time for my business, would it be only a 40% deduction?

 

Is my prescribed medicine tax deductible? As well as my chiropractor visits? If so, do I report it on the 1065, or the 1040?