When the rain gods do not send water for irrigation, farmers look downwards, at groundwater, for help. But, years of groundwater exploitation and lack of recharging, has led to a fall in the water tables. For instance, in north and central Gujarat, water tables have dropped to 20m per decade since 1974, as per a study by the Central Ground Water Board. If this continues, extracting groundwater will get more expensive because we have to dig deeper, or worse, groundwater will be only a myth for future generations.