Sewage treatment
The Pukete sewage works cost $12.5m ($160m at 2015 prices). It now cleans /day, which is aerated for about 2 hours in a [[Sewage treatment#Primary treatment|sedimentation tank]], [[Sewage treatment#Disinfection|disinfected with chlorine]], [[Sulfur dioxide#As a reducing agent|dechlorinated with sulphur dioxide]] and discharged into the Waikato through a diffuser [[outfall]] on the river bed.