Dear adavidi,
There are so much water treatment handbook for you to read and find.
For such of that data, you would find it in:
1. Kurita, hand book of water.
2. Nalco, handbook of water.
3. AWWA, handbook of water.
4. Betz, hand book of water.
Those all is the water handbook from the people who know the treatment of the water for industria processes, especially in demineralized water, cooling water, boiler feed water and satitary water.
For solubility, you would find it also in:
1. Perry's; Chemical Engineering Hand book.
2. Handbook of Thermodynamics Properties.
3. Lange's; handbook of Chemical Engineering.
I suggest you to read first in Perry's Chemical Engineering handbook from 3rd edition to 7th edition. The data there is so complete, otherwise you would find the data from Handook of Thermodynamics Properties. I hope you would find those books easily.