For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
AIR GAP. An unobstructed vertical distance through atmosphere between the discharge end of a pipeline supplied from a public water supply and the overflow rim of the receiving portion of the customer water system.
BACKFLOW. The flow of water or contaminants into the public water supply distribution system from a source other than the public water supply.
COMMISSIONER. The Commissioner of the Indiana Department of Environmental Management, or the Commissioner’s authorized representative.
CROSS-CONNECTION. Any physical arrangement, including cross-connection control devices not in working order, whereby a public water supply distribution system is directly connected, either continuously or intermittently, with any secondary source of supply, sewer, drain, conduit, pool, piping, storage reservoir, plumbing fixture, or other device which contains, or may contain, and is capable of imparting to the public water supply, contaminants, contaminated water, sewage, or other waste or liquid of unknown or unsafe quality.
CROSS-CONNECTION CONTROL DEVICE. Any device or assembly approved by the Commissioner for construction on, or installation in, water supply piping, which is capable of preventing contaminants from entering the public water supply distribution system.
CROSS-CONNECTION CONTROL DEVICE INSPECTOR. A person who has:
(1) Successfully completed training in testing and inspection of cross-connection control devices from a training provider approved by the Commissioner;
(2) Received a registration number from the Commissioner; and
(3) Not been notified by the Commissioner that the registration number has been revoked.
CROSS-CONNECTION HAZARD. Any customer facility which, because of the nature and extent of activities on the premises or the materials used in connection with the activities or stored on the premises, would present an immediate or potential danger or health hazard to customers of the public water supply should backflow occur.
CUSTOMER. Any person who receives water from the public water supply.
CUSTOMER SERVICE LINE. The pipeline from the public water supply to the:
(1) First tap, fixture, receptacle, or other point of customer water use; or
(2) Secondary source of supply or pipeline branch in a building.
CUSTOMER WATER SYSTEM. All piping, fixtures, and appurtenances including secondary sources of supply used by a customer to convey water on his or her premises.
DOUBLE CHECK VALVE ASSEMBLY. A device or assembly composed of two tightly closing shut-off valves surrounding two independently acting check valves, with four test cocks, one upstream of the four valves and one between each of the four check and shut-off valves.
PRESSURE VACUUM BREAKER. A device or assembly containing an independently operating internally loaded check valve and an independently operating loaded air valve located on the downstream side of the check valve for relieving a vacuum or partial vacuum in a pipeline.
REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER. A device composed of two tightly closing shut-off valves surrounding two independently acting pressure reducing check valves that, in turn, surround an automatic pressure differential relief valve, and four test cocks, one upstream of the five valves and one between each of the four check and shut-off valves. The check valves effectively divide the structure into three chambers; pressure is reduced in each downstream chamber allowing the pressure differential relief valve to vent the center chamber to atmosphere should either or both check valves malfunction.
SECONDARY SOURCE OF SUPPLY. Any well, spring, cistern, lake, stream, or other water source, intake structure, pumps, piping, treatment units, tanks, and appurtenances used, either continuously or intermittently, to supply water other than from the public water supply to the customer; including tanks used to store water to be used only for firefighting, even though the water contained therein is supplied from the public water supply.
(Ord. 2006-10, passed 9-19-2006)