Aluminum – base containers were gathered from different waste stores, cleaned, cut into small pieces and treated chemically to produce potash alum. The liquid potash alum was changed to crystals of potash alum. The product was subjected to verifying and validity tests to prove the potash alum percentage, its purity and its possible action in the sedimentation process carried for producing potable water from the Nile river stream. These tests contain instrumental methods of analysis, proofing tests for the validity of the sedimentation process in addition to tests carried out by nano-made crystals from the potash alum produced. The prepared alum from wastes proved to be accepted technically and environmentally as a controlling factor. A batch of potash alum had been chemically extracted from waste aluminum-base cans and allied containers and sheets. The batch obtained is analogous, to a certain extent, to the alum present commercially in Egyptian markets. Instrumental and technical tests proved the utility of the produced alum for industrial and home daily uses.