As used in this article, “improvements” means any or all of the following property acquired, constructed or installed by a local agency with funds derived from special assessments under the Improvement Act of 1911 (Division 7 (commencing at Section 5000), Streets and Highways Code) or any other law:

1. (a) Water mains, pipes, conduits, hydrants and other works or appliances which may be used for providing water service.
2. (b) Poles, posts, lines, pipes, conduits, lamps, and other works or appliances which may be used for providing electricity and electric service.
3. (c) Mains, pipes and other works and appliances which may be used for providing gas service.
4. (d) Poles, posts, lines, pipes, conduits, and other works or appliances for the purpose of supplying telephone or other communications.