I tested my water supply from a "memade" pond with surfacewater flowing in , i got it tested twice first time befor the Ultrafiltation filter went in and 3 month later after , first results where beside manganese and iron problems here , that it failed to be regarded as potable water , second test said its absolutely fine
in the ten years in operation , none of us ever had a problem , many of the school friends of my son , had more problems with the council supplied water ( but i am not sure if thats related to water )
billi