Contract question on foreclosed property

[Pratik Desai]

I am new to real estate investment and i found one property that is foreclosed. This property is in a decent condition and it is "de-winterized" so i couldn't check wether property has proper plumbing or has any issue with plumbing. My realtor mentioned that its normal to have it de-winterized to avoid any issues.  I went ahead an placed the offer and it was countered with a condition

"Sold as-is condition, no repairs. Buyer responsible for certificate of occupancy and any other certificates required by city or township." 

If i find any major plumbing issues during inspection, Can i legally back out as there is no disclosure from seller?  Can i request repairs even though i accepted no repairs during my contract? Is it a norm by bank / government agency to de-winterize any foreclosed property?