Himachal Pradesh to set up its first eco-friendly STP in Manali February 10, 2023 | Key Segments, Municipal Wastewater, News & Developments, State Initiatives, Wastewater The 17 million litres per day (mld) STP will be built in Gojra Bihal under the sequential batch reactor system. The plant will be eco-friendly and the amount of pollution is expected to be negligible This content is restricted.