Sewage Treatment Plants in Delhi play a critical role in addressing the growing wastewater management challenges. As the Indian capital’s population burgeons, so does its sewage output, posing environmental and public health risks. STPs in Delhi are designed to collect, treat, and discharge sewage, ensuring that contaminants are removed before wastewater re-enters natural water bodies. These facilities employ a range of physical, chemical, and biological processes to purify the water. Additionally, some STPs are being upgraded to incorporate advanced technologies for better efficiency and environmental sustainability. Despite ongoing efforts, the city still faces sewage treatment capacity issues, but investment in STPs remains essential for a cleaner and healthier Delhi.