Definitions. As used in this section, 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
customers but would not adversely effect human health. Typical examples
of such substances are hot water, food-grade dyes, 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 which is 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 Town of Newfane Water Superintendent as meeting
an acceptable specification stated or cited in this section or as
suitable for the proposed use.
AUXILIARY WATER SUPPLY
Any water supply on or available to the premises other than
the Town of Newfane 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 Town of Newfane 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.
CUSTOMER
A water user served by the Town of Newfane water supply system.
CUSTOMER'S WATER SYSTEM
The piping used to convey water supplied by the Town of Newfane
water supply system throughout a customer's facility. The system shall
include all those parts of the piping beyond the control point of
the Town Water Department. The control point is either the curb valve
or the main valve located in the public right-of-way that isolates
the customer's facilities from the Town of Newfane distribution system.
DEGREE OF HAZARD
Whether a facility is rated hazardous, aesthetically objectionable
or nonhazardous.
DOUBLE CHECK VALVE ASSEMBLY, ACCEPTABLE
An assembly that is 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
watertightness 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 customers. Typical examples are
laboratories, sewage treatment plants, chemical plants, hospitals
and mortuaries.
NONHAZARDOUS FACILITY
One which does not require the installation of an acceptable
backflow prevention device.
PUBLIC WATER SUPPLY SYSTEM
The Town of Newfane water supply 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 customer'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.
SUPERINTENDENT
The Superintendent of the Town of Newfane Water Department.