I'd like to know what size the "standard" blue residential PVC water pipes are, in Tayug (in Pangasinan). I was there last year, and and think they are either 5/8 inch or 3/4 inch, but I need to know exactly which.
I plan on bringing in some fittings and such to build a solar water heater. I find it easier to get the parts needed while I'm in Canada.