Got it from Aqua Sciences.net, a plumbing supply house. Yeah, it's rated for 200# and is NSF Certified - ANSI/AWWA C901.
https://www.aquascience.net/industries-submersible-poly-pipe-200psi-1-diameter I'll call them. Per the Menard's ad, those are only 200' rolls and I don't want any splices that I don't have to have. Also, our local Menard's (10 miles away) is bad about stating that they have stuff in stock, then don't even carry it at the store. (Ex.- 18" dual wall conduit-not even a rack for it there. Cherne 6" inflatable block ball- checked their site and it said they had them. Got to the store and they had 3" and 4", but said the 6" is a "special order" and would take A MONTH! to get one in.)
One run from the well to the garden hydrant will be 360', via the house, and then I need the rest for a utility tank and the route to a future shop. 500' will cover that without any splices. Besides, they ship for free and it comes to my front door. Thanks, though. Lee