a. Air-Gap means 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.
b. Commissioner means the executive and chief administrative officer of the Indiana Department of Environmental Management. (State Law reference: Cross Connections; Control; Operation; 327 IAC § 8-10-1 et seq.)
c. Cross Connection means 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 is capable of imparting to the public water supply, contaminants, contaminated water, sewage, or other waste of liquid of unknown or unsafe quality.
d. Cross Connection Control Inspector means a person who has successfully completed training in testing and inspection of cross connection control devices at an agency or school acceptable to the commissioner of the Department of Environmental Management, who has registered with the commissioner, and who has not been notified by the commissioner that his work is unacceptable under this rule (327 IAC § 8-10).
e. Double Check Valve Assembly means a device or assembly composed of two (2) tightly closing shut-off valves surrounding two (2) independently acting check valves, with (4) four test cocks, one (1) upstream of the four (4) valves and one (1) between each of the four (4) check and shut-off valves.
f. Downstream is the normal direction of water flow from the public supply to the user. "Upstream" is that direction which is opposite of downstream.
g. Hazard means the danger of public water contamination caused by chemical, bacteriological, or other sources that may, under certain conditions such as backflow, enter the public water supply system.
h. Potable Water means water that is suitable for drinking as determined by the requirements of the Federal Safe Drinking Water Act.
i. Pressure Vacuum Breaker means an assemble containing an independently operating internally loaded check valve and an independently operating loaded air inlet valve located on the discharge side of the check valve. The assemble is to be located with properly located test cocks and tightly closing shut off valves attached to each end of the assembly.
j. Private Auxiliary Supply System refers to all private wells or other private water supplies which are normally entirely independent and not connected to the public water supply.
(Ord. No. 1241, § 1, 7-14-93)
k. Private Water Supply System is defined as: The lateral fire and service line to the user's premises starting at the roundway (buffalo box) on the service line and terminating at the point-of-usage; whether for fire, suppression, irrigation or domestic usage.
(Ord. No. 1241A, § 1, 8-21-96)
l. Public Water Supply System is defined as: That system consisting of the water mains and appurtenances such as fire hydrants and main values used to distribute the potable water supply to the public, and shall terminate at the roundway (buffalo box) for lateral service to the user; the Utility is the owner of the Public Water Supply System.
(Ord. No. 1241A, § 2, 8-21-96)
m. Reduced Pressure Backflow Preventer means a device which is composed of two (2) tightly closing shut-off valves surrounding two (2) independently acting pressure-reducing check valves which in turn surround an automatic pressure differential relief valve, and four (4) test cocks, one upstream of the five (5) valves and one (1) between each of the four (4) check and shut-off valves. The check valves effectively divide the structure into three (3) 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.
n. User is the water customer or public authority using potable municipal water.
o. Utility is the Town of Schererville Water Works, a municipally owned utility, governed by the Utility Board of the Town of Schererville.
(Ord. No. 1241, § 1,7-14-93)