Have you wondered about the composition of your brewing water?  Well (pun intended) here’s how. Follow the link below and change the map to your Locality and click on the well nearest to your home. Click on “table” and your head will spin at all the numbers.

http://hbrc.govt.nz/services/water/groundwater-quality/

(new link October 2017)

Also, I found a downloadable document there regarding water quality. Page 24 shows you where the bores are and you can extract details from the appendices relevant to your location. But you need to know what you’re looking for.

Click to access Groundwater-Quality-State-and-Trends-Final.pdf

Fear not, there are lots of guides on what it means for the home brewer, Start with

http://howtobrew.com/book/section-3/understanding-the-mash-ph/reading-a-water-report

Happy brewing!