Pachanady STP - Sewage Treatment Plant in Mudushedde, Karnataka, India

Pachanady STP (Sewage Treatment Plant) is a municipal wastewater facility located in Mudushedde, a locality in Mangaluru taluk, Dakshina Kannada district, Karnataka, India. The plant serves a population of approximately 58,460 and is part of the urban wastewater infrastructure for the Mangaluru region. It is classified as a medium-sized agglomeration under Indian regulatory frameworks. As an operational plant, Pachanady STP is expected to comply with the standards set by the Karnataka State Pollution Control Board (KSPCB) under the Water (Prevention and Control of Pollution) Act, 1974. For a plant of this scale, secondary treatment is typically required, and the designed capacity is 1.00 million liters per day (MLD). Indian sewage treatment plants often employ technologies such as activated sludge process or sequential batch reactors. The treated wastewater from Pachanady STP is discharged into local water bodies that ultimately drain into the Arabian Sea via the Netravati River or Gurupura River. The region's coastal ecology is sensitive, and proper treatment is crucial to prevent nutrient loading and protect marine biodiversity. The plant's proximity to the coast (within 50 km) underscores the importance of effective wastewater management.

Pachanady STP discharges treated wastewater into the local drainage system, which flows into the Netravati River or Gurupura River, both of which empty into the Arabian Sea near Mangaluru. The coastal waters support diverse marine life, including fisheries and mangrove ecosystems. Nutrient and pathogen removal at the plant is essential to prevent eutrophication and protect public health in the downstream coastal zone.