Originally posted by: Modelworks
Deep Well with pump = don't really care how much water home uses.
It is something to consider, depending on where you live.
Even a shallow well can supply enough water for a sprinkler system and they are easy to install yourself.
My dad and me put down a shallow well and pump in one afternoon.
All that is needed is pipe, a sledge hammer , and a well point (strainer with sharp point). Dig a hole with a post hole digger as deep as you can. Put the point with section of pipe attached in hole and place a piece of wood onto top of pipe to keep from damaging it, then hit with hammer. When it gets deep enough, add another section of pipe. Continue till you get down about 25 feet.
About $100 in parts to put down , add a pump and tank for another $150 and you got all the water you can use.
Shallow well can deliver enough usage water in high & abundance water table, or low usage. Shallow well pump work of atmospheric pressure principle, therefore the theoretical depth is 32 feet, (in real practice 29' max due to pressure drop to 1 psi at depth). Shallow well ease of installation also require that the location of well is not in rocky or gravel.
It is not necessary that deep well can deliver water for irrigation system, because not all deep well can deliver high volume that required.
Typically residential sprinkler head/nozzle start at 1.5 GPM to about 6 GPM each.
Typical sprinkler zone 5 heads on a line or 1.5 * 5 = 7.5 GPM to 6 * 5 = 30 GPM.
In my experience, 30 GPM at depth from a deep well pump going to be a very expensive system if you can find a spring/springs that deliver that kind of volume.
7.5 GPM still is relatively expensive because of well depth and better than the average deep well pump. And, 7.5 GPM is greater than most deep well delivery rate.
Water aren't free unless you have a river next or under your property.
PS. What kind of pump and tank are you talking about?
Most 30-40 gal tanks start at $350 CAD or roughly $270-280 USD, and the cheapest pump for this type of application is going to cost at least $300-400.
IMHO, a tank tee, foot valve, ball valve, and a pressure switch is going to be more than $150.