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One of the basic human needs for survival is drinking water that is facilitated by the Regional Water Company (PDAM). Regional Water Company (PDAM) product sludge in the process that becomes production waste is immediately discharged into the water body without processing it first. This is an act of environmental pollution and can lead to an increase in the concentration of aluminum in water which can pollute aquatic organisms, and humans who indirectly consume water or organisms from the water. Other complications arise from the traditional brick industry. Many people Penggaron Kidul Village work as red brick craftsmen that the land sourced from around the communitys residents. But this caused damage to the environmental order and waterlogging because the former excavation of clay used as raw material for making bricks was left unchecked. The research method consists of 3 stages, namely testing the characteristics of mud and clay, brick making, and testing the physical and mechanical properties of bricks. So that obtained the characteristics of PDAM mud with clay soil has characteristic similarities classified in silt with high plasticity or high plasticity silt. Then the Tirta Moedal PDAM mudflow in Semarang City can be used as a mixture of bricks that meets the Indonesian National Standard with a maximum amount of mud of 15%