I have a friend that couldn't make it to her regular pool store to test the water and went to another location of the same company.
Her normal store never has issues with her water, all levels are in the normal range. She took it to the new place and they said her phosphates are over 9000 and at an unsanitary level and tried to sell her phosphate remover.
If she maintains the chlorine regularly (has a SWG system), is that still too high a level? I know some people here maintain their pool at high levels, and as long as chlorine is kept in check its fine. I suggested she should take hit today to her normal place and ask them to test for phosphates as well.