Question raised in Rajya Sabha on Industrial garbage in major rivers, 06/02/2017. As per the existing environmental regulations, disposal of industrial garbage is permitted only at authorized sites. Rivers in the country are mainly polluted due to discharge of untreated and partially treated sewage from cities/towns and industrial effluent. Non-point sources of pollution like agricultural runoff, open defecation, runoff from solid waste dump sites etc., also contribute to this pollution. Central Pollution Control Board (CPCB) has identified 920 grossly polluting Industries discharging effluent into rivers across the country. These industries are required to meet the prescribed effluent quality norms before discharging their treated effluent into water bodies. CPCB has also identified 302 polluted river stretches in the country. State-wise details of Polluted River Stretches is given in Annexure.