Water, Measured. Water, Saved.
With FluxGen Sustainable Technologies and its AI- and IoT-based AquaGen platform, a seven-year programme (2024 – 2031) to see exactly where water goes — and where it is wasted.
Before the programme, the hospital and residential campus drew an estimated 350 KL of water a day — about 80% from borewells and 20% from the BWSSB / Cauvery supply — with no logging of where it went.
How it works. 57 digital flow meters, level sensors and piezometric groundwater sensors cover residential blocks, hostels, kitchen, laundry, canteens, borewells, sumps, the STP and the cooling towers. Each reports every 5 minutes to a cloud dashboard, with automated alerts for leaks, threshold breaches and abnormal use.
The fix. The data showed excessive flow at tap level, so between April and June 2025 1,648 aerators were installed and 1,691 taps replaced across the campus. Aerators mix air into the stream: the flow feels the same, but far less water leaves the tap.
| Measure | Baseline (Sep 2024 – Mar 2025) | Apr 2025 – Apr 2026 |
|---|---|---|
| Average monthly consumption | 7,396 m³ | 6,066 m³ (▼ 17.98%) |
| Water saved | — | 17,289 KL |
| Estimated annual cost saving* | — | ₹5.18 lakh |
| Monitoring system uptime | — | 93.5% |
* Estimated at an assumed rate of ₹30 per kilolitre; to be updated when the confirmed procurement cost is available.
All Wastewater Treated and Reused
A 300 KLD Sewage Treatment Plant and a 150 KLD Sullage Treatment Plant, both using the extended aeration activated sludge process, treat all wastewater on campus. Dual pipelines laid when the hospital was built carry the treated water back for reuse.
- Treated STP water is used for toilet flushing in the residential quarters and for landscaping.
- Sullage plant output is used for toilet flushing in the hospital and in the cooling towers.
- The STP comprises a bar screen chamber, equalisation tank, aeration tank, secondary clarifier, treated effluent tank, aerobic digester, sludge drying beds and air blowers.
| Parameter | KSPCB standard for reuse | Achieved |
|---|---|---|
| pH | 6 – 9 | Within standard |
| BOD | < 20 mg/L | < 10 mg/L |
| COD | < 50 mg/L | Within standard |
| TSS | < 20 mg/L | < 20 mg/L |
The plants operate under KSPCB Consent to Operate, in full adherence to KSPCB / CPCB requirements for STPs and effluent discharge.
Every Drop Used Three Times
Hospital is one of the first in Bangalore city to have its own water treatment plant several years before it became mandatory. Fresh water is used for drinking, bathing and in wash basins. Then this water goes to sullage treatment plant and is recycled in sewage treatment plant for use in flushing tanks. Then this water is again recycled for use in the gardens.
Recycling Gray Water
Sullage treatment is a term used to describe treatment of wastewater that arises as a byproduct of daily human activities such as showering, washing dishes, and doing the laundry. It’s also commonly referred to as gray water. Much of this gray water can be recycled and reintroduced into the environment instead of just being disposed of. Environmental experts have claimed that reusing gray water will have a great beneficial impact on fresh water supply over time. It’s estimated that up to 80 percent of all household wastewater is sullage. Many see this as a waste of water that could potentially be reused. Ecological experts claim reusing wastewater is not only better for the environment, but will also be vital in solving the planet’s predicted water shortages. By reusing it, the population can lower the consumption of fresh water, replace vital nutrients in the soil, promote plant growth, and lower the amount of chemicals used in treatment plants.
Preventing Water Pollution
Sewage treatment is a type of wastewater treatment which aims to remove contaminants from sewage to produce an effluent that is suitable for discharge to the surrounding environment or an intended reuse application, thereby preventing water pollution from raw sewage discharges.
