Outside water faucets

[Remone R.]

So we own 2 duplexes with 4 total outside water faucets and we pay the w/s/g not the tenants. In the winter we put locks on the water faucets because the bill was getting high and anyone could walk up and get water out the faucets as we've had 2 faucets replaced by a plumber. The tenants are requesting that we remove the faucet lock for the summer. Each duplex has only 1 meter and 2 of the tenants are section 8 so we can't just split the bill we would have to have each unit metered separately. Do we have to legally remove the locks? If not what are some suggestions other than buying separate meters for each unit? The property is located in Auburn also