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The Water Regulations 2008 outline 2 types of water information – historical information, and new or ongoing information.
Historical information is information a person holds before the end of the grace period.
Regulation 7.04 lists certain subcategories of water information and person categories. An organisation listed in these person categories and holding these data during the grace period gives them as historical information. They give historical information within a fortnight after the end of the grace period.