Waxy hair after washing


I have been doing no poo for about 2 months now. I use the water only method. It was going great for a while, but recently, after I wash my hair I have a waxy feeling at my roots. It is possible since where I live we are on well water, that my water is hard. I’m wondering what I can do to stop this. I was hoping for a way of doing so that doesn’t involve food that needs to be refrigerated, ie eggs and such, as I am often without access to one during the summer. Thanks!