As used in this article, the following terms shall have the meanings
indicated:
AIR GAP SEPARATION
A physical break between a supply pipe and a receiving vessel.
The air gap shall be at least double the diameter of the supply pipe
measured vertically above the top rim of the vessel, in no case less
than one inch.
APPROVED CHECK VALVE
A check valve that seals readily and completely. It must
be carefully machined to have free-moving parts and assured watertightness.
The face of the closure element and valve seal must be bronze composition
or other noncorrodible material which will seal tightly under all
prevailing conditions of field use. Pins and bushings shall be of
bronze and other noncorrodible, nonsticking material, machined for
easy dependable operation. The closure element shall be internally
righted or otherwise internally equipped to promote rapid and positive
closure in all sizes where this feature is obtainable.
APPROVED DOUBLE CHECK VALVE ASSEMBLY
Two single independently acting check valves, including tightly
closing shutoff valves located at each end of the assembly and suitable
test connections, this device must be approved as a complete assembly.
APPROVED REDUCED PRESSURE ZONE DEVICE
A minimum of two independently acting check valves together
with automatically operated pressure differential relief valve located
between the two check valves. In case of leakage of either check valve,
the differential relief valve, by discharging to the atmosphere shall
operate to maintain the pressure between the checks at less than the
supply pressure. The unit must include tightly closing shutoff valves
located at each end of the device and each device shall be fitted
with properly located test cocks. This device must also be approved
as a complete assembly.
AUXILIARY SUPPLY
Any water supply on or available to the premises other than
the approved public water supply.
BACKFLOW
The flow of water or other liquids, mixtures, or substances
into the distributing pipes of a potable supply of water from any
source or sources other than its intended source. Backsiphonage is
one type of back flow.
BACKSIPHONAGE
Backflow resulting from negative pressure in the distributing
pipes of a potable water supply.
CERTIFIED BACKFLOW PREVENTION DEVICE TESTER
An individual who has successfully completed a New York State
Department of Health approved course in the testing of backflow prevention
devices and has been issued a certificate by the New York State Department
of Health.
CHECK VALVE
A self-closing device which is designed to permit the flow
of fluids in one direction and to close if there is a reversal of
flow.
CROSS-CONNECTION
Any unprotected connection between any part of a water system
used or intended to be used as a supply of water for drinking purposes
in a source or system containing water or substance that is not or
cannot be approved as equally safe, wholesome and potable for human
consumption.
HAZARD HEALTH
Any conditions, devices, or practices in the water supply
system and its operation which create, or in the judgment of The Town
Board may create, a danger to the health and well-being of the water
consumer. (An example of a health hazard is a structural defect in
the water supply system, whether on location, design, or construction,
that regularly or occasionally may prevent satisfactory purification
of the water supply or cause it to be polluted from extraneous sources.)
POLLUTION
The presence of any foreign substance (organic, inorganic,
radiological, or biological) in water that tends to degrade its quality
so as to constitute a hazard or impair the usefulness of the water.
SURGE TANK
The receiving, nonpressure vessel forming part of the air
gap separation between a potable and an auxiliary supply.
TOWN
The Town of Little Valley, Cattaraugus County, New York.
Village. The term "Village" means the Village of Little Valley, Cattaraugus
County, New York.
VACUUM BREAKER
Pressure type and nonpressure type. A vacuum breaker which
can only be used for internal plumbing control and, therefore, not
acceptable as a containment device.
VILLAGE WATER DEPARTMENT
The department or subdivision of the Village (defined earlier)
which has direct control and authority over the Village water system.
WATER SUPERVISOR
The consumer or a person on the premises charged with the
responsibility of complete knowledge and understanding of the water
supply piping within the premises and for maintaining the consumer's
water system free from cross-connections and other sanitary defects,
as required by this article and all other required regulations and
laws.
WATER, NONPOTABLE
Water that is not safe for human consumption or that is of
questionable potability.
WATER, POTABLE
Water free from impurities in amounts sufficient to cause
disease or harmful physiological effects. Its bacteriological and
chemical quality shall conform to the requirements of the County Health
Department and the New York State Health Department.