This people called  and left no message   I think it's a Homedepot company
I filled a form for this company to analyze water  and they called me saying that they only tested for hardness of water and that they needed to come to my house to make other test-
To me that was some bullcrap  just an excuse to come over and scare me  and try to sell me some over price water system-   So I stop answering their calls  
I could have checked for hardness    I already knew that-