I would like to set up a drinking water tap on my property, to be able to access drinking water from 250 feet away from the house. It does not need to be a permanent setup, and in fact I intend to disconnect it and drain it in the winter season (this is in long-winter upstate NY). Think campground. You know those water spigots they have dispersed across the campground?

I was thinking 250ft of PEX connected to an existing sillcock, and just letting it run above ground during the summer season. The pex could get rolled up during the off-season, or just disconnected from the sillcock and drained and left in place. On the other end, I'd build a wooden platform and have the PEX terminate at a metering valve and spout, like this one: [www.chicagofaucet.com]. The valve and spout would be mounted on a wooden stand.

The 250 ft run would be downhill and the valve would be a total of about 25 vertical feet below the sillcock on the house (steep hill below the house), so that may factor in to what diameter tubing I'd need for a 250 ft run?

Thoughts? Is this even allowable by code? If not, what would be the easiest way of getting a setup that would meet NYS code?

Pex isn't supposed to be exposed to sunlight. Are you opposed to burying a pipe ?

HDPE is cheap.

Is HPDE rated for above-ground use? What diameter would you use if running 250 feet with 25 feet vertical drop from house supply?

I'd feel fine with using it. 1"

You won't find any that are UV rated. You don't have to bury it deep, just out of the sun. Give us an idea what you are going to use this for. It will let us know what size should be used.

Ok... I have a lot of rural acreage and I plan on renting out camping sites during the summer. Rather than have guests fill their water bottles from the house sillcock, I want to run a line that can carry potable water 250 feet away from the house. I got my inspiration from those water taps you see along paths at campsites. There are dense woods that separate the house from where I want to set up a water tap, so digging a trench would be impossible because of tree roots, but on the other hand very little light filters through the trees so UV is minimal. I would be able to trench it for the first 25 feet away from the house because it's just lawn, but for the remaining 225 feet it's dense trees.

if the pipe is just to used for filling water bottles then a 3/4 x 300 foot roll of pex would be fine. not great volume but certainly adequate for what you want.
use a good 1/4 turn hose faucet not a cheap import washer type hose faucet.

That does sound like a simple solution! Who makes a 1/4 turn valve that's spring loaded so it always defaults to closed? I'm on a well system and if someone forgot to close the valve it would eventually run the well dry.