In 2012, only 39% of wastewater was treated (MCid, 2014) and only a fraction of that received treatment to remove phosphorus, hormones and antibiotics, which affect both ecosystems and human health. Other major pressures on water quality include mining, industrial effluent, diffuse flows from urban and agricultural soil drainage, and solid waste discharge. The indt 'moderate' (36-51), “poor’(19-36), "very poor' (£19). The last two categories (index values £ Source: ANA (2013), Conjuntura dos Recursos Hidricos no Brasil.