1. Water Sourcing and the Narmada Canal Connection
Dholera is situated in a semi-arid, coastal region of Gujarat where local groundwater is highly saline and unfit for consumption. To secure fresh water:
- SSNNL Agreement: DICDL has a formal water-sharing agreement with the Sardar Sarovar Narmada Nigam Limited (SSNNL) to draw raw water from the Narmada sub-canal system.
- Raw Water Aqueduct: A dedicated, concrete-lined pipeline transports raw water from the Narmada Canal directly to the WTP at Kanatal.
- Storage Reservoirs: The raw water is stored in massive balancing reservoirs at the plant site to ensure a constant feed to the filtration units, even during canal maintenance shutdowns.
2. Water Treatment & Filtration Technology
The Kanatal Water Treatment Plant operates under strict guidelines to treat raw water to World Health Organization (WHO) potable standards:
- Clariflocculation: Silt and suspended solids are coagulated using chemical alum additions and settled in large circular clarifier basins.
- Rapid Sand Gravity Filtration: Water passes through deep sand and gravel filter beds to remove fine microscopic particles.
- Disinfection (Chlorination): Chlorine gas injection kills bacteria, pathogens, and viruses, maintaining residual disinfection during transit.
- Clear Water Reservoirs: Fully treated water is transferred to massive underground clear-water storage tanks before entering the distribution grid.
The table below lists the technical specifications of Dholera’s potable water network:
| Parameter | Specification / Value | Technology / Sourcing |
|---|---|---|
| **Plant Siting** | Kanatal Village Boundary | Sited at a natural elevation to optimize gravity flow |
| **Initial Design Capacity** | 150 MLD (Million Liters/Day) | Scalable to meet future Phase 2/3 urban demands |
| **Raw Water Source** | Narmada Canal | Drawing from the SSNNL Saurashtra branch sub-canal |
| **Piping Material** | Ductile Iron (DI) K9 Class | Inside concrete utility ducts to prevent exterior corrosion |
| **Flow Metering** | SCADA / Ultrasonic | Automated telemetry reporting to ABCD Command Center |
3. Smart Water Grid & Telemetry Control
Once treated, potable water is pumped through Ductile Iron (DI) pressure pipes laid inside the underground utility ducts. Dholera’s water grid is fully modernized:
- Acoustic Leak Detection: Underground pipes are equipped with acoustic sensors that detect the sound of pinhole leaks before they lead to major pipe bursts.
- SCADA Flow Monitoring: Flow rates, pressure levels, and chlorine levels are monitored continuously by the central ABCD Building.
- Consumer Smart Meters: Every industrial and residential property is fitted with smart water meters, tracking consumption to prevent water wastage.
Frequently Asked Questions (FAQ)
#### Where does Dholera Smart City get its water?
Dholera SIR gets its fresh water from the Saurashtra branch of the Narmada Canal network through an agreement with Sardar Sarovar Narmada Nigam Limited (SSNNL). The raw water is piped to the Kanatal WTP for treatment.
#### What is the capacity of the Dholera Water Treatment Plant?
The initial operating capacity of the Kanatal Water Treatment Plant is 150 MLD (Million Liters per Day). The infrastructure is designed to scale up dynamically as industrial manufacturing and residential populations expand.
#### How is water quality monitored in Dholera SIR?
Water quality is monitored at the filtration source and along the distribution line using SCADA-linked sensors that track chlorine levels, pH balance, and turbidity, with data transmitted directly to the ABCD Central Command Center.
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