77 Ill. Adm. Code 895.10
Definitions
Section 895
Section 895.10Â Definitions
"Plumbing System" means the water service, water
supply and distribution pipes; fixtures and traps; soil, waste and vent pipes;
and building drains; including their respective connections, devices and
appurtenances.
"Private Water Supply" means a water supply which
serves an owner-occupied single family residence or dwelling.
"Public Water Supply" means a system for the
provision to the public of piped water for human consumption, if the system has
at least 15 service connections or regularly serves an average of at least 25
individuals daily at least 60 days per year. The term Public Water System
includes:
any collection, treatment, storage and distribution
facilities under control of the operator of such system and used primarily in
connection with such systems; and
any collection or pretreatment storage facilities not under
such control which are used primarily in connection with such system.
"Semi-Private Water Supply" means a water supply
which is not a public water supply, yet which serves a segment of the public
other than an owner-occupied single family residence or dwelling.
"Sewage" means waste water derived principally from
dwellings, business or office buildings, institutions, food service
establishments, and similar facilities.