1-4 of 4 results for subject:Ozone
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To ask the Secretary of State for Environment, Food and Rural Affairs, which UK water treatment works are provided with (a) activated carbon filtration systems, (b) ozone filtration systems and (c) both activated carbon and ozone filtration systems; and where each is located.
To ask the Secretary of State for Environment, Food and Rural Affairs, which UK water treatment works are provided with (a) activated carbon filtration systems, (b) ozone filtration systems and (c) both activated carbon and ozone filtration systems; and where each is located.
To ask the Secretary of State for Environment, Food and Rural Affairs, what percentage of UK water treatment works is provided with (a) activated carbon filtration systems, (b) ozone filtration systems and (c) both activated carbon and ozone filtration systems. - No figures given.
To ask the Secretary of State for Environment, Food and Rural Affairs, what percentage of UK water treatment works is provided with (a) activated carbon filtration systems, (b) ozone filtration systems and (c) both activated carbon and ozone filtration systems. - No figures given.
What is % of drinking water, by volume, in England that is treated by addition of chlorine & ozone. - (Holding answer 15 January 1990)
What is % of drinking water, by volume, in England that is treated by addition of chlorine & ozone. - (Holding answer 15 January 1990)
To give % by volume of drinking water in Scotland that is treated by addition of chlorine & ozone.
To give % by volume of drinking water in Scotland that is treated by addition of chlorine & ozone.