Abandon that spring and drill a well.
I grew up in a house that was spring-fed. The spring in the hillside about 600 ft. from the house was partially excavated and a stone collection basin was created. All the water that collected in this basin flowed down another pipe to a 6' deep x 2' dia. reservoir about 50' away and 10' lower. A pipe in the bottom of this reservoir fed the house. First floor kitchen and bath was about 20'-30' in elevation below the bottom of the reservoir. No pump, just gravity flow. My Grandfather designed and installed the system in the 1920s.
Sounds pretty cool, right? Geezzzz, it was dreadful!
Water from the limestone spring was hard as a rock. Lime buildup in all the pipes. After a heavy rain the water in the reservoir had high turbidity and cloudy. Every now and then a silverfish or some other kind of bug would come out of the faucet along with the water. During really dry summers the spring would nearly dry up and we had to be very conservative of water usage. No water pressure to second floor of house. No water pressure to wash a car.
Dad finally had enough and drilled a well with a submersible pump and abandoned the spring system. What an improvement!!
So, save yourself a lot of time, money and misery and just drill a well.