As used in this article, 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 customers,
but would not adversely effect 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 Town of East Bloomfield Water Superintendent as meeting
an applicable specification stated or cited in this article or as suitable
for the proposed use.
AUXILIARY WATER SUPPLY
Any water supply on or available to the premises other than the Town
of East Bloomfield Water Districts 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 East Bloomfield supply system from any source other than its
intended source.
CERTIFIED TESTER
An 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 supply system.
CUSTOMER'S WATER SYSTEM
The piping used to convey water supplied by the Town of East Bloomfield
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 System.
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
District distribution system.
DEGREE OF HAZARD
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 watertightness of each check valve.
HAZARDOUS FACILITY
Facility 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 entire Town of East Bloomfield Water 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 East Bloomfield Water Districts.