MountainSpringPool

We recently bought a house and, first thing first, replastered the pool. Now, as we are getting ready to fill the pool with water again, we need to choose our water supply: 1) We live at the top of a mountain and have free access to the water supply of a mountain spring, but test results show a TDS of 4000. So the pool guys don't want to use the water. But the water is free and the previous owners always used this spring. 2) Or we use the city supply with the acceptable levels, as recommended by the pool guys, and pay a fortune. Any suggestions?!?!?

We recently bought a house and, first thing first, replastered the pool. Now, as we are getting ready to fill the pool with water again, we need to choose our water supply: 1) We live at the top of a mountain and have free access to the water supply of a mountain spring, but test results show a TDS of 4000. So the pool guys don't want to use the water. But the water is free and the previous owners always used this spring. 2) Or we use the city supply with the acceptable levels, as recommended by the pool guys, and pay a fortune. Any suggestions?!?!?