Lower AQI by suppressing dust. I am a refugee from Lahore. Remember that all roads and lanes (गली) were swept daily followed by sprinkling of water. Roads by giant bullock drawn brushes and lanes manually. Roads were sprinkled by motorised tankers while lanes were sprinkled manually by मशक carriers. This practice should be followed round the year in NCR. Mist generation machines should be installed at all crossings. Heard that water shortage exists. Water generated by cleaning sewage from sewage treatment plants can be used for sprinkling.