As used in KRS 74.420 to 74.520, unless the context requires otherwise:
(1) "Sources of supply of water" means and includes any or all of the following: wells, impounding reservoirs, standpipes, storage tanks, pumps, machinery, purification plants, softening apparatus, trunk mains, and all other appurtenances useful in connection with developing and furnishing a supply of water under pressure into the water distribution systems of the cities, water districts, water associations or federal agencies which are represented by a commission created pursuant to the provisions of KRS 74.420 to 74.520.
(2) "Water association" means a nonprofit corporation formed for the purpose of furnishing water services to the general public pursuant to KRS Chapter 273.