For example, Labour banned guns, insulated and ventilated cold/moldy rental homes, vaccinated >90% of the population (while simultaneously keeping covid at bay until that was achived), and a lot more https://old.reddit.com/r/newzealand/comments/wvifwk/so_what_...
They also embarked on a massive program to fix the water quality issues you mentioned https://en.wikipedia.org/wiki/Three_Waters_reform_programme
So, nannies they may be, layabouts they are not.