determinateproc

On further observation the git repository of the book [0] seems to be quite active. Maybe this book might be finished after all.

[0]: https://github.com/beejjorgensen/bgc

Beej himself lists this as an 'alpha-quality document' on the download page [0] and if I remember correctly, it has been so for years. Wonder why this is posted here on HN.

[0]: http://www.beej.us/guide/bgc/

> I have no idea what an electric purifier would even look like

Here are some of the popular brands that you can get over here:

https://www.eurekaforbes.com/water-purifiers/by-category/aqu...

https://www.kent.co.in/

These claim to use RO, UV etc. for purifying the water. I am kind of surprised that the Amazon USA listings for water purifiers return several fad-ish "gadget" things first, instead of the above.

How common is the use of water purifiers in the West? Here in India, in my observation, most middle class and above families own a household water filter of some sort (electrical or otherwise) and routinely fill up bottles for drinking purposes. Drinking straight from the tap is something very uncommon.