She allegedly filled the Sprite bottle with the lethal cleaning chemical benzalkonium chloride five weeks earlier and left on the bar. It was then put in a fridge by another staff member.
The RSA and the cleaner are due to appear in Waitakere District Court next month.
The Avondale RSA declined to comment today.
Mrs Murphy told the Herald in March that she went to the club for a birthday drink with a friend and ordered her "usual'', a Sprite Zero lemonade.
"I picked up the drink and drank it as normal. Suddenly, my head just exploded, everything just exploded,'' she said.
"All I could think of was getting to the toilet and throwing up. But I couldn't breathe.
The mistake prompted a nationwide review of RSA cleaning and bar procedures.