I think I have hard water..or something

For the past month because of serious drought and power outage my town has had a water boil alert almost every week. When the drought first began, I noticed I was getting alot of shedding but thought it was natural. I did light protein and it worked until I washed my hair again. A few weeks later, I did an Aphogee reconstructive treatment and everything was golden until I washed my hair again. I could run my fingers through my hair and get strands coming out from the scalp (no breakage.) I would lose about 30 or more strands which is uncommon for me. I could pull strands 4-5 at a time out of my hair. I was very frustrated. I didn't wash my hair for week and again, everything was ok, but then I had the shedding again! Even with light manipulation. I don't brush my hair and I use a wide tooth bone comb. What do I do? Do I just boil water or do I use bottled? Has anyone had this problem before?

I read on another forum how damaging hard water can be on your hair. I'd never thought about it actually until my sister was visiting me from another state and while washing my hair for me, commented on how hard the water is here(TX). I want to invest in a water filter system but have to do some research b4 purchasing one.