The minister has also written to the Food Safety and Standards Association (FSSA) to check the chemical contents in the water bottles sold in and around Delhi and whether they are fit for human consumption.
In a letter to FSSAI, which is responsible for maintaining standards of quality in anything consumed by people, Azad today asked the food regulator to depute teams to check water samples of all water sources and test the plants of bottling companies.
The Minister asked the regulator to check the contents of chemicals and ascertain their permissible limits to check if the bottling companies are using proper purification systems.
Sources say the complaints refer to certain water sources from where the bottling plants are getting raw water and allege that the companies are using chemicals above the permissible limits to purify the water.
Sources said the water samples of all brands, including those manufactured by top MNCs and government-run companies, would be taken.