GAWAH Explainer | Part 1 of a two-part series
Hyderabad’s drinking water comes from a network of reservoirs, river-water projects, pumping stations and treatment plants spread across Telangana. As water levels at Singur and Manjeera come under pressure, the question is not simply whether a reservoir will become empty. It is whether the city can keep delivering enough treated water to homes, hospitals, businesses and public services through the dry months.
The immediate picture: recent reports citing Hyderabad Metropolitan Water Supply and Sewerage Board (HMWSSB) officials describe falling reserves in some sources, concern over groundwater and preparations to conserve water and bring alternative supplies into the system. The Board has also rejected viral claims that Hyderabad’s reservoirs would all run dry by the end of November. Residents should rely on official announcements rather than forwards predicting a citywide shutdown.
Figures in this report reflect the latest publicly available reports located on October 29, 2026. Reservoir levels and operational plans can change; this is not a live water-board bulletin.
Where does Hyderabad get its drinking water?
The city’s supply has grown far beyond its historic lakes. Its main sources include:
- Osman Sagar (Gandipet): A historic reservoir in the Musi basin, built after the devastating 1908 floods and commissioned in 1920.
- Himayat Sagar: The second historic reservoir, commissioned in 1927. Together, the twin reservoirs formed an important part of Hyderabad’s early drinking-water system.
- Singur and the Manjeera system: Water from the Manjeera basin is stored and conveyed through infrastructure serving Hyderabad and other communities. Singur’s storage is currently a major focus of concern.
- Krishna River system: Water is transferred through the Krishna Drinking Water Supply Project, with Akkampally serving as a key tapping point.
- Godavari River system: The Yellampally system and related infrastructure provide another long-distance source, helping diversify supply beyond the older reservoirs.
Water must still be pumped or conveyed, treated to drinking-water standards and distributed through the city’s network. A reservoir containing water does not automatically mean that all of it can be delivered to consumers: allocations, minimum operating levels, treatment capacity, pumping power and pipeline constraints all matter.
For official consumer information and services, visit the HMWSSB website. The Telangana government’s Municipal Administration and Urban Development department page lists the Water Board and its official contacts.
How much water does Hyderabad need?
Recent reports put current supply to the Core Urban Region at roughly 550–585 million gallons per day (MGD), while one report citing HMWSSB described a possible shortfall of around 50 MGD in the coming months if Singur supply declines and additional sources make up only part of the loss. These are reported operational estimates, not a guarantee of the quantity reaching every household.
That distinction matters. Daily supply, estimated demand, water produced at treatment plants and water actually delivered through household connections are different measures. To understand the true buffer, the Board’s source-wise daily production, demand, distribution losses and planned additional supply need to be compared on the same date.
What do the latest reservoir levels tell us?
A reservoir dashboard drawing on HMWSSB data showed the following storage snapshot for October 27, 2026:
| Source | Storage | Share of capacity |
|---|---|---|
| Singur | 3.029 TMC | 10.1% |
| Manjeera | 0.190 TMC | 12.7% |
| Osman Sagar | 2.106 TMC | 59.9% |
| Himayat Sagar | 2.131 TMC | 84.5% |
| Krishna / Akkampally | 1.247 TMC | 83.2% |
| Godavari / Yellampally | 17.703 TMC | 87.8% |
Source: Hyderabad Water Clock reservoir dashboard, which identifies HMWSSB as the source of reservoir readings. These are dated figures, not a live official statement. A separate October 29 report put Singur at about 3.21 TMC (10.73%), illustrating how readings can differ by date and update time.
The figures show why one citywide percentage can mislead. Singur and Manjeera are at low levels, while other sources hold a larger share of their nominal capacity. However, storage percentages do not tell us how much water is allocated to Hyderabad, how much is operationally usable or how much can be transferred each day.
What happens if reservoirs keep falling?
Hyderabad would not necessarily lose water everywhere on one day. The impact would depend on which source declines, how much alternative supply can be moved, and how the network is operated.
- First, the operating margin shrinks. Authorities may need to manage releases more carefully and rely more heavily on other sources or pumping arrangements.
- Supply pressure may become uneven. Neighbourhoods at the ends of distribution networks, or those dependent on a particular source, may be more vulnerable if supply is constrained.
- Demand for tankers and borewells can rise. That can increase household costs and put additional pressure on groundwater, especially where recharge has been weak.
- Essential uses must be prioritised. Water-intensive non-drinking uses such as construction, gardening and cleaning can be shifted where possible to treated wastewater, preserving potable water for drinking and household needs.
- Public-health risks grow if safe water becomes harder to access. Inadequate water for hygiene and unsafe storage or alternative sources can create risks even before a citywide supply failure occurs.
Can the Krishna and Godavari systems make up the difference?
They are important buffers, but not unlimited emergency taps. Recent reporting says HMWSSB is examining additional supplies, network connections and the use of treated sewage water for construction, landscaping and other non-potable purposes. Reports also describe a conservation plan intended to manage supplies through the lean months. Planned or proposed supply must be distinguished from water already being delivered.
The key questions are how many additional MGD are operational today, what the pumping and treatment limits are, and whether the pipelines can move water to the neighbourhoods that need it. A second source helps only if water is available, allocated, treated and physically deliverable.
Groundwater is not an unlimited backup
When municipal supply feels uncertain, households often turn to borewells or private tankers. But groundwater can also decline. Telangana’s Ground Water Department publishes monitoring information and groundwater assessments; its official portal should be consulted for the latest readings and their locations. A state average should not be treated as a measurement of every Hyderabad neighbourhood.
HMWSSB has also been reported to be stepping up enforcement against potable-water wastage, promoting conservation and encouraging treated wastewater for uses that do not require drinking-quality water. Residents can help by fixing leaks, preventing sump and overhead-tank overflow, maintaining rainwater-harvesting pits and avoiding the use of drinking water for activities that can use treated wastewater.
Official reference: Telangana Ground Water Department.
What residents should—and should not—conclude
Do not treat a low reservoir percentage as a countdown to the day Hyderabad runs out of water. The result depends on usable storage, daily draw, inflows, allocations, alternative supplies and infrastructure. Nor should residents believe unverified social-media messages predicting that all reservoirs will dry up by a specific date. HMWSSB has publicly disputed such a viral claim.
The more useful question is: how much dependable, treated water can Hyderabad deliver every day if inflows remain weak? To answer it properly, the Water Board should publish a regular source-wise dashboard showing storage, inflows and outflows, daily production, demand, additional water actually delivered and contingency milestones.
What GAWAH will examine next
This is Part 1 of GAWAH’s two-part water series. In Part 2, we will revisit the years when Hyderabad’s water reserves fell dangerously low—including the reported 2003 supply disruption, the 2015–16 drought and Singur’s dead-storage episode in 2018–20—and compare the historical records with the present situation.
Sources and further reading
- Telangana government: October 2026 review on El Niño, rainfall deficit and preparedness
- Hyderabad Metropolitan Water Supply and Sewerage Board
- Telangana Ground Water Department
- Hyderabad Water Clock: reservoir storage dashboard and methodology
- Telangana Today: reservoir levels and HMWSSB supply concerns
- The New Indian Express: conservation, enforcement and treated-water reuse
- Hyderabad Mail: fact-check of viral claims about reservoirs drying up by November
Reporting note: Current storage figures are time-sensitive. GAWAH should update the source table immediately before republishing or materially updating this article.
