(a) A water corporation with more than 10,000 service connections shall maintain on its Internet Web site an archive of all pending, approved, or rejected advice letters for a period of two rate case cycles from the date the advice letter is submitted or for six years, whichever is shorter, and shall do all of the following:

1. (1) Provide a direct link from its Internet Web site to each advice letter, making the information contained there available to the public.
2. (2) Maintain advice letters in numerical order. The advice letters may be retained as a stand-alone site. The water corporation may combine the list with a list of current advice letters that have been transmitted for filing, or are filed, pending, protested, or otherwise active.
3. (3) Include a link to the commission’s index of advice letters on the water corporation’s Internet Web site.