Hi all,
I have recently embarked on my coffee journey and bought a decent machine and grinder. Now I am thinking I should improve on is the quality of the water going into the machine. I have bought the API test kit to test my tap water, and come up with the results below. I am in South West Sydney. I am wondering if I need a water filtration system based on these results? I was also considering that since the KH seems to be only slightly higher than the recommended, whether I would be ok to just add some distilled water from Woolies/Coles to bring the numbers down - would there be any issues with that idea?

GH KH
71.6 71.6