Well Pump Sizing - Multiple Homes on Rural Property

[Thinly9172]

Hi, I am trying to size a well pump for my rural property and having trouble with the overwhelming number of options. The property will have 3 one bed/bath single level homes plus an RV hookup. All homes will be within ~150' of the pumphouse where our pressure tank and filtration system will be located, roughly at or below the pumphouse grade. I plan to purchase a CSV1a to use with a 20 gallon pressure tank.

Some stats:
Total depth: 140'
Diameter: 6"
Static Level: 20'
Production: 30GPM

From searching this forum I see that Grundfos pumps can be somewhat more reliable. The product selection tool on their Canadian website seems to suggest a S or SQ series pump. Which should I be going for, and what figures should I plug into their selection tool?

Thank you,
-Totally clueless

 

[Valveman]

Unless someone installs huge body spray shower heads you won't need much water. 15 GPM or so should me more than you could use. Something like the Grundfos 16S10-10 would work well with the CSV1A and 20 gallon tank. Probably overkill but I was figuring at 200' total head.