In regions water scarcity the water reuse in irrigation is alternative for farmers. In this context, the study was conducted in order to changes the chemical attributes of organic substrates subjected to water replacement levels with different water qualities in pepper cultivation. The experimental design was randomized blocks in factorial design 2x5x2, being represented by two types of water (water supply and wastewater), 5 water levels based on water requirement (WR) culture [100% WR ( L5), 80% WR (L4), 60% WR (L3), 40% WR (L2) and 20% WR (L1)] and second substrates (cattle and goats). Were evaluated the Ec, pH and sodium Adsorption Ratio (SAR). Increasing water levels influence in the of Ec and pH. The pH was higher than 7 exchangeable and total acidity was zero, with no changes to these attributes. According the data obtained was found that there were changes in chemical properties of the substrate elevating the levels of the elements, necessitating leaching blades to reduce concentrations in substrates.