The free coffee/water deal has been continually extended for a while now. They've now extended it again and separated the vouchers. As the previous deal post was made over 6 months ago and has expired I thought it'd be a good time for a new post. See original deal 1 deal 2 and comments within for more information.
The vouchers were previously combined (free spring water or free coffee), however you'll need to pick 1 or the other at the ATM now. Free coffee voucher Free spring water voucher. The spring water is usually $2.80 or so (currently on special for $1) and the coffee is usually $0.80 (long time promo price).
The usual deal details:
You'll receive a free coffee or free water voucher every time you do a balance enquiry or make a withdrawal at a Coles Express ATM. The machine will prompt you at the end to choose your voucher and print it out, you can use it then or keep it for next time. You can do either a balance enquiry ($1) or a cash withdrawal ($2.50) to receive the voucher. Whilst anyone can do this, only ING Direct customers and Coles MasterCard customers can do it without incurring a fee. ING Direct will refund your ATM fees for both of these ($1 & $2.50). You can also use your Coles Credit card to make a balance enquiry if you prefer which is fee free. If you have both then use the Coles MasterCard as it's quicker (no fee prompt/refund).
Reminder to receive free ATM fees you must deposit (but not keep) $1000 a month into your ING account:
"Every single ATM in Australia is FREE. Simply deposit $1,000 or more per month."
Update 8/10: Free coffee deal ended, free water deal still available and extended until 18/11
Does this include the new prepaid coles MasterCards?