Beneath the Punjab’s lush green fields, a reservoir is running dry – and nobody is counting the drops. For decades, the subterranean aquifers of Punjab have been the unsung lifeline of our agrarian economy. Today, however, a macabre dance of policy paralysis, technological shift, and institutional neglect is draining these hidden reserves at a breakneck pace, leaving behind a toxic legacy of salinity and scarcity.
The sheer scale of this extraction is staggering. Pakistan is the third-largest user of groundwater for irrigation globally, with a whopping 73% of our agricultural footprint relying directly or indirectly on it. Out of the 68 billion cubic meters (bm3) of groundwater extracted nationally, a lion’s share-60 bm3-is sucked out of the earth, and Punjab alone accounts for 90% of this gargantuan depletion. To put it bluntly, we are extracting water at a rate 142% higher than what nature can replenish.
In 1960, Punjab had a mere 4,500 tubewells; today, that number has exploded to over 1.5 million.
The latest data from the Water Resources Zone (WRZ) of the Punjab Irrigation Department (PID) paints a gruesome picture. The groundwater table is plummeting at an alarming rate of 0.5 to 1.0 meters per annum. The pre- and post-monsoon piezometer readings from boreholes reveal that districts like Pakpattan, Okara, and Multan are witnessing annual declines of 1.81ft, 1.72ft, and 1.52ft respectively. In volumetric terms, Okara and Rahim Yar Khan alone are bleeding approximately 4.15 and 4.08 million acre-feet (MAF) of groundwater each year. Cumulatively, Punjab’s groundwater withdrawals have surpassed a staggering 53 MAF-narrowly mirroring the province’s entire allocated share of canal surface water, which stands at 56 MAF.
How did we get here? The answer lies in a paradoxical twist of technology. In 1960, Punjab had a mere 4,500 tubewells; today, that number has exploded to over 1.5 million. Historically, the prohibitive cost of electricity and diesel acted as a natural, albeit unintended, regulator. Farmers only pumped water when absolutely necessary. The advent of solar panels, however, has upended this calculus. With the sun powering the pumps for free, extraction has become costless, leading to injudicious and ceaseless pumping. When water is free, it is treated as limitless.
But the crisis does not end with quantity; the quality of our groundwater is equally under siege. This is where the specialized wings of the Water Resources Zone (WRZ) of the Punjab Irrigation Department (PID) play an indispensable, yet underappreciated, role. The Surveyor Wing conducts meticulous circle-level surveys to monitor groundwater levels and quality parameters. This data is then handed over to the Salinity Research Wing, which interprets the nuances of water-borne salinization and determines water fit for irrigation. Working inseparably, these two wings have uncovered a deeply disturbing trend: the unchecked pumping of “fit” irrigation water is rapidly altering the aquifer dynamics, pulling up saline water and causing secondary salinization in the soil body.
The Salinity Research Wing, through its salinity assessments and bioremediation efforts at PID research farms, has long warned about this water-soil relationship. The white, crusty salt encroaching on our fertile lands is the ghost of mismanaged water. Furthermore, contemporary research highlights a high risk of arsenic and heavy metal contamination in Punjab’s groundwater hotspots-carcinogenic and mutagenic threats that are already turning rural drinking water into a slow poison.
Amidst this doom and gloom, the Water Resources Zone has proven to be the vital institutional anchor. In a monumental step toward data-driven governance, the Water Resources Zone has recently completed a geo-referenced database project, enumerating and geo-tagging every single tubewell across Punjab. This digital footprint is the bedrock upon which any future regulation must be built. You cannot manage what you cannot measure, and the Water Resources Zone has finally given us the measuring stick.
Yet, the bureaucratic and political response has been sorely lacking. Under the Punjab Government, the instinct has been to lean on command-and-control tactics-licensing tubewells and imposing extraction tariffs. This is a recipe for disaster. Such price-based deterrents will only make farmers miserable and open the floodgates of rent-seeking and corruption at the enforcement level. The challenge is not to punish the farmer for pumping, but to restore the delicate balance between withdrawal and recharge. Tehran’s sinking plains stand as a sobering example of what awaits us if we fail. Instead of coercion, we need strategic recharge interventions.
To truly understand the gravity of this crisis, step into the worn-out shoes of Haji Shams Ul Haque Bohar, a smallholder farmer in the outskirts of Shujabad. A decade ago, Haji Shams Ul Haque Bohar would turn on his diesel tubewell with a heavy heart, calculating the spiraling fuel costs against the price of his wheat and mango orchard. He watered his fields only when the leaves began to wilt. Then came the solar panel salesman, promising free water from the sky. Haji Shams Ul Haque Bohar took a loan and installed a solar tubewell. The hum of the pump became a constant melody. He watered his fields liberally, even letting the water overflow onto the pathways. Why not? The sun didn’t send a bill.
But last year, the music stopped. By mid-May, the pump started sputtering. The water table, which once sat at 30 feet, had plunged past 80. When the water finally did trickle up, it left a white, chalky residue on the soil that stunted his crop. The water was turning saline. Today, as the alarms from the Water Resources Zone’s piezometers ring in the corridors of power, Haji Shams Ul Haque Bohar stands in his field, staring at a dry, salty crust where his livelihood used to be. The sun still beats down on his solar panels, but there is nothing left underground to pump.
Pakistan routinely grapples with unmanaged excess surface water during monsoons and floods. The PID must repurpose its abandoned canals and emergency escape channels into groundwater recharge ponds. Thousands of historic village drinking water ponds on government lands, now encroached upon, must be reclaimed and converted into recharge structures. Furthermore, the government must launch a dedicated Annual Development Programme to subsidize farm-level recharge wells-boreholes that drain excess rainwater back into the aquifer, simultaneously preventing waterlogging and recharging depleted reserves. We can no longer afford the reactive myopia of our decision-makers. It is time the government mustered the political will to act. Lest we want our posterity to inherit a barren wasteland, high, dry, and salty, the time to recharge and regulate is now.
The writer can be reached at dr.mehboobhassan @aol.com