Back in 2004 I had a well drilled to for a home sprinkler system. After drilling 220' we hit water and it starts gushing out the 6" pipe. At the time I was told this would diminish and I could move forward installing a pump. Several days later the water is still gushing, I call the company who drilled the well, they come back and install an offset or sleeve to run off the excess water. They again say this should diminish over time. Seven years later the excess flow is as strong as ever (conservatively 45 GPM). With no end in site I'm reaching out possible solution/ideas to address this issue.
Can't yopu cap off the well? Then use the water at whatever flow rate you want. If the capability is 45 of so gallons per minute then you will never have to worry about running dry or overdrawing if people want to take a shower and wash clothes at the same time the sprinlers are going.
It is possible you will still neeed a booster pump to operate the sprinklers even if no other people are usijng water at the time.
The good conscientious technician or serviceperson will carry extra oils and lubricants in case the new pump did not come with oil or the oil was accidentally spilled, so the service call can be completed without an extra visit.