HYDERABAD: Dial-a-tanker services of the Hyderabad Metro Water Supply and Sewerage Board (HMWSSB) may soon be out of business as a fairly good monsoon has brought groundwater levels in the city up by 8.5 metres.

While the average groundwater level prior to June 1, 2005 was 15.25 metres, measurements after November 1, 2005 showed the rains had brought the level just 6.7 metres below the ground, according to the HMWSSB Rain Water Harvesting Cell (RWH) Assistant Director B. Narsing Rao.

Copious rains measuring 1,073mm from June to November, much above the usual 730mm-760mm has helped in the rise of groundwater table, says Mr. Rao.

Bounteous rainfall

"Three years ago, the groundwater level was decreasing by two metres on a daily basis. However, a 259mm-rainfall in 2003 helped in preventing any further loss in 2004. This year, thanks to the bounteous rainfall, there is a good increase," says Mr. Rao.

For residents waging daily water battles, this means reduced dependence on Metro water for washing and gardening as water from recharged borewells can be used instead.

In addition to reduced water bills and pumping costs, groundwater quality will also improve, says S. Padmaja, Manager (Engineering), RWH cell.

Rainwater harvesting

"But every year we might not have the same amount of rains," warns Mr. Rao. During a meagre monsoon, rainwater harvesting is the only way to maintain good groundwater levels, he adds.

In fact, he claims that rainwater harvesting has contributed to the current increase in water levels too. "Every month, RWH cell has been inspecting and constructing approximately 300 RWH structures under the AP Water Land and Tree Act (APWALTA) for all new premises."

Citizens' participation in rainwater harvesting will make the difference between saving the water and letting it run off to create roadblocks or as waste into the Musi. "If you can ensure 14 percent of the rain goes into the ground, the earth will be recharged perfectly," says Mr. Rao.

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