FSTPs are designed to treat fecal sludge while STPs are designed to treat wastewater collected through UGSS. Comparison of performance between FSTPs and STPs is yet to be explored in TN.

Capex for STPs generally is in the range of 2.5-7.5 Million INR (approximately 35,000-100,000 USD)1 per MLD treatment capacity. Opex generally varies from 3.0 – 3.3 INR per Kilo Litre. Capex for FSTPs varies from 0.9 -1.2 Million INR (approximately 12,000-16,500 USD) per KLD for FSTPs implemented in TN.