As used in this Part 2, the following terms
shall have the meanings indicated:
ACCEPTABLE BACKFLOW PREVENTION DEVICE
An acceptable air gap, reduced pressure zone device or double
check valve assembly as used to contain potential contamination within
a facility. In order for the reduced pressure zone device or the double
check valve assembly to be acceptable it must be listed on the most
current version of the New York State Department of Health List of
Acceptable Devices.
AESTHETICALLY OBJECTIONABLE FACILITY
One in which substances are present which, if introduced
into the public water supply system, could be a nuisance to other
water consumers or users but would not adversely affect human health.
Typical examples of such substances are food-grade dyes, hot water,
stagnant water from fire lines in which no chemical additives are
used, etc.
AIR GAP
The unobstructed vertical distance through the free atmosphere
between the lowest opening from any pipe or faucet supplying water
to a tank, plumbing fixture or other device and the flood level rim
of said vessel. An approved "air gap" shall be at least double the
diameter of the supply pipe, measured vertically, above the top of
the rim of the vessel and in no case less than one inch.
APPROVED
Accepted by the Cuba Village Superintendent as meeting an
applicable specification stated or cited in this Part 2 or as suitable
for the proposed use.
AUXILIARY WATER SUPPLY
Any water supply on or available to the premises other than
the Cuba Village-approved public water supply. These "auxiliary waters"
may include water from another purveyor's public potable water supply
or any natural source(s) such as a well, spring, river, stream, harbor,
etc., or used waters. These waters may be contaminated or they may
be objectionable and constitute an unacceptable water source over
which the water purveyor does not have sanitary control.
BACKFLOW
A flow condition induced by a differential in pressure, that
causes the flow of water or other liquids and/or gases into the distribution
pipes of the Cuba Village supply system from any source other than
its intended source.
CERTIFIED TESTER
That individual or firm approved to accomplish the necessary
inspections and operational tests of backflow prevention devices.
CONTAMINATION
The presence in water of a substance that tends to degrade
its quality.
DEGREE OF HAZARD
Whether a facility is rated as hazardous, aesthetically objectionable
or nonhazardous.
DOUBLE CHECK VALVE ASSEMBLY, ACCEPTABLE
An assembly composed of two single, independently acting
check valves, including tightly closing shutoff valves located at
each end of the assembly and suitable connections for testing the
water tightness of each check valve.
HAZARDOUS FACILITY
One in which substances may be present which, if introduced
into the public water system, would or may endanger or have an adverse
effect on the health of other water consumers or users. Typical examples:
laboratories, sewage treatment plant, chemical plants, hospitals,
mortuaries.
NONHAZARDOUS FACILITY
One which does not require the installation of an acceptable
backflow prevention device.
PROPERTY OWNER
An owner of real property served by the Cuba Village water
supply system.
PROPERTY OWNER'S WATER SYSTEM
The piping used to convey water supplied by the Cuba Village
supply system throughout a property owner's facility. The system shall
include all those parts of the piping beyond the control point of
Cuba Village. The "control point" is either the curb valve or the
main valve located at the public right-of-way that isolates the property
owner's facilities from the Village distribution system.
PUBLIC WATER SUPPLY SYSTEM
The Cuba Village system, including the source, treatment
works, transmission mains, distribution system and storage facilities
serving the public. This includes the distribution system up to its
connection with the property owner's water system.
REDUCED PRESSURE ZONE DEVICE, ACCEPTABLE
A device containing a minimum of two independently acting
check valves, together with an automatically operated pressure differential
relief valve located between the two check valves. During normal flow
and at the cessation of normal flow the pressure between these two
checks shall be less than the upstream (supply) pressure. In case
of leakage of either check valve, the differential relief valve, by
discharging to the atmosphere, shall operate to maintain the 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.