FSTP at Leh, India


Scale of service

City (Population: 0.03 Million)

Area of the site

0.15 acres


Faecal sludge

Outlet/end products

Treated water + manure

Operational since


Cost of the plant

USD 81,744

Treatment capacity

12 cum/day

Retention time (approx.)

PDB: 3 – 4 years


Implementing agency: BORDA and CDD Society
Coordinates of the plant: 34°8'42.08"N 77°35'15.30"E


Need for technology
Influx of tourists, modern habits and increasing popularity of flush toilets has led to depletion and contamination of groundwater which is a major source for drinking water for the city.  A sewer system is under construction and in due course may only cover 40-50% of the city which could be too little, too late. The plant was built to tackle prevailing FS mis-management issue in Leh city.

System components
Planted Drying Bed (PDB): 10 units (design size: 8m X 6m X 2m)
Horizontal Planted Gravel Filter (HPGF): 2 units (design size: 10m X 6m X 0.6m)
Polishing Pond (PP): 1 unit (design size: 5.6m dia X 1m depth)

System description

  • Raw FS is emptied from the tanker into the screening chamber to remove any grit and debris. FS from the chamber enters into the respective planted drying bed.

  • Each day, only a single bed of PDB is filled with FS and allowed to dry.

  • Post solid-liquid separation and digestion of solid fraction at PDB, the leachate (which has percolated from the drying beds) flows under gravity to HPGF for further treatment.

  • Once the sludge accumulates to a height of around 0.9 m in the PDB (in 3 – 4 years), it is removed and can be used as an organic soil conditioner.

  • The treated leachate from the HPGF is stored at a PP where it is further digested and disinfected using direct sunlight.

  • A plant nursery has been proposed to be developed on-site where the treated leachate and FS will be used to grow plants and make Leh greener.

Contact Details:
Snehit Prakash
Project Coordinator, FSTP Leh, Hoolock Tech Pvt. Ltd.