STP Plant Cost in Delhi The STP plant cost in Delhi varies depending on capacity (KLD), technology (MBBR, SBR, MBR), civil work, and automation level. In 2025, small and medium STP plants typically range from ₹1.5 lakh to ₹12 lakh, while larger commercial or industrial systems may go higher. Hydroflux Engineering offers CPCB-compliant and energy-efficient STP solutions that help reduce operational expenses and overall STP/ETP cost. Whether you need installation, upgradation, or a compact STP for space-restricted locations, we provide end-to-end turnkey solutions across Delhi NCR. 📞 Contact: +91-8851165175 📧 Email: support@hydroflux.co.in 🌐 Website: https://hydroflux.co.in/sewage-treatment-plant.html 👉 Serving all India 🌐 hydroflux.co.in #stpplantcostindelhi #stpplantmanufacturer #hydrofluxengineering