Rooftop rainwater recharge
Pipe roof water through a silt trap and filter into a recharge pit or an old borewell. Every 100 m² of roof puts back tens of thousands of litres a year, right where the pumping happens.
Almost every drop that rain puts back is being pumped out. That is the 2025 stage of groundwater extraction: water pumped out in a year as a share of what rain and other sources safely put back. Down 243 points since 2017.
Each point is one CGWB assessment. Over-exploited means more water leaves the ground than comes back, so the water table keeps falling. Hover over or tap a point to see why it moved.
| Year | Stage | Pumped out | Safe limit | Category | What changed |
|---|---|---|---|---|---|
| 2017 | 341.5% | – | – | Over-exploited | First assessment in this series. |
| 2020 | 112.3% | 17.5 million m³ | 15.6 million m³ | Over-exploited | Down 229 points since 2017. |
| 2022 | 96.0% | 63.8 million m³ | 66.5 million m³ | Critical | Pumping up 265% (18 → 64 million m³). Safe limit up 326% (16 → 67 million m³). Main reason: more water soaked back into the ground, from better rain, canals or recharge structures. A swing this large usually comes partly from revised estimates (a new well count or changed district boundaries), not only from changes on the ground. |
| 2023 | 93.6% | 54.4 million m³ | 58.1 million m³ | Critical | Pumping down 15% (64 → 54 million m³). Safe limit down 13% (67 → 58 million m³). |
| 2024 | 102.8% | 59.7 million m³ | 58.0 million m³ | Over-exploited | Pumping up 10% (54 → 60 million m³). Safe limit down 0% (58 → 58 million m³). Main reason: more water was pumped out, mostly for homes and industry (54 → 60 million m³). |
| 2025 | 98.3% | 60.6 million m³ | 61.7 million m³ | Critical | Pumping up 2% (60 → 61 million m³). Safe limit up 6% (58 → 62 million m³). Main reason: more water soaked back into the ground, from better rain, canals or recharge structures. |
Million m³: 1 million m³ = 100 crore litres. 2009 and 2013 used the older GEC-97 method.
Loading 20 years of rainfall…
11 of 94 water bodies (12%) are not in use: dried up, silted, built over or polluted. Bringing them back is one of the cheapest ways to recharge groundwater.
Loading the map of water bodies in Hyderabad…
Source: 1st Census of Water Bodies, Ministry of Jal Shakti (counted in 2018-19, published 2023).
Most of the water here goes to homes and industry, so rooftop recharge and reuse make the biggest difference.
Pipe roof water through a silt trap and filter into a recharge pit or an old borewell. Every 100 m² of roof puts back tens of thousands of litres a year, right where the pumping happens.
Treated water from a sewage treatment plant can run flushing, gardens, cooling towers and construction, which today often draw on borewells.
Parks, campuses, warehouse yards and road sides can take recharge shafts that reach past the clay layer, so runoff that floods streets goes down to the aquifer instead.
Metered and registered borewells, leak repairs in supply lines and water-efficient fixtures cut pumping without anyone going short.
Desilting old ponds and opening their feeder channels restores natural recharge. A one-hectare pond that soaks in a metre of water over the monsoon puts back about a crore litres.
Porous pavers, unpaved tree pits and bioswales along roads let rain soak in instead of racing to the drain.
In the 2025 Central Ground Water Board assessment, Hyderabad (Telangana) pumped out 98% of the groundwater that can be safely taken out each year, which puts it in the "critical" category. That is 243 points lower than in 2017.
Not yet, but it is critical: 98% of the safe yield is already used.
Rooftop rainwater harvesting into recharge pits or old borewells, recharge shafts in open land, reviving ponds, check dams, treating and reusing wastewater, and moving farms to drip irrigation and less thirsty crops.
The first Census of Water Bodies counted 94 water bodies in Hyderabad, including 64 ponds. 11 of them were not in use.
Yearly rain at Hyderabad, 2006–2025, from NASA satellite data. Lighter bars are dry years (20% or more below average), when wells are drawn hardest.