Definitions. The following words, terms and phrases, when used in this section, shall have the meanings ascribed to them in this Subsection
A.
APPROVED
Accepted by the Superintendent as meeting an applicable specification
stated or cited in this section, or as suitable for the proposed use.
APPROVED BACKFLOW PREVENTER
A device that has been manufactured in full conformance with
the standards established by the American Water Works Association
titled "AWWA C510-92--Standard for Double Check Valve Backflow Prevention
Assembly" and "AWWA C511-92--Standard for Reduced Pressure Principle
Backflow Prevention Assembly" and/or "NYSDOH Technical Reference PWS
14 Approved Backflow Prevention Assemblies" (or latest revisions thereof),
and has met completely the laboratory and field performance specifications
of the Foundation for Cross Connection Control and Hydraulic Research
(FCCHR) of the University of Southern California established by "Specification
of Backflow Prevention Assemblies," Section 10 of the most current
issue of the "Manual of Cross Connection Control." The AWWA, NYSDOH,
and FCCHR standards and specifications have been adopted by the Village.
Final approval shall be evidenced by a certificate of approval issued
by an approved testing laboratory certifying full compliance with
said AWWA standards and FCCHR specifications.
AUXILIARY WATER SUPPLY
Any water supply on or available to the premises other than
the Village's approved public water supply.
BACKFLOW
The flow of water or other liquids, mixtures or substances
under positive or reduced pressure into the distribution pipes of
a potable water supply from any source other than its intended source.
BACKFLOW PREVENTION ASSEMBLY
An assembly or means designed to prevent backflow, as in:
(1)
AIR GAPThe unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet conveying water or waste to a tank, plumbing fixture, receptor or other assembly and the flood level rim of the receptacle. These vertical physical separations must be at least twice the diameter of the water supply outlet, never less than one inch.
(2)
DOUBLE CHECK VALVE ASSEMBLYThe approved double check valve assembly consists of two internally loaded check valves, either spring loaded or internally weighted, installed as a unit between two tightly closing resilient-seated shutoff valves and fittings with properly located resilient-seated test cocks.
(3)
PRESSURE VACUUM BREAKER ASSEMBLYThe approved pressure vacuum breaker assembly consists of an independently operating internally loaded check valve, and an independently operating loaded air inlet valve located on the discharge side of the check valve, with properly located resilient-seated shutoff valves attached at each end of the assembly designed to operate under pressure for prolonged periods of time to prevent backsiphonage.
(4)
REDUCED-PRESSURE BACKFLOW PREVENTION ASSEMBLYThe approved reduced-pressure principle backflow prevention assembly consists of two independently acting approved check valves together with a hydraulically operating, mechanically independent pressure relief valve located between the check valves and below the first check valve. These units must be located between two tightly closing resilient-seated shutoff valves as an assembly and equipped with properly located resilient-seated test cocks.
BACKPRESSURE
A condition in which the customer's system pressure is greater
than the Village's system pressure.
BACKSIPHONAGE
The flow of water or other liquids, mixture or substances
into the distribution pipes of a potable water supply system from
any source other than its intended source caused by the sudden reduction
of pressure in the potable water supply system.
CONTAINMENT
A method of backflow prevention which requires a backflow
prevention assembly at the water service connection.
CONTAMINANT
Any physical, chemical, biological, or radiological substance
or matter in water.
CROSS CONNECTION
Any physical arrangement whereby a public water supply is
connected, directly or indirectly, with any other water supply system,
sewer, drain, conduit, pool, storage reservoir, plumbing fixture,
or other device which contains or may contain contaminated or polluted
water, sewage or other waste, or liquid of unknown or unsafe quality
which may be capable of imparting contamination or pollution to the
public water supply as a result of backflow or backsiphonage. Bypass
arrangements, juniper connections, removable sections, swivel or changeable
devices, and other temporary or permanent devices through which or
because of which backflow or backsiphonage could occur are considered
to be cross connections.
CUSTOMER WATER SYSTEM
Includes those parts of water system facilities beyond the
point of delivery that are utilized to convey potable water to the
customer's points of use.
DETECTOR CHECK ASSEMBLY
A double check valve in the main supply line with a smaller
parallel flow detection line with a meter and an independently acting
double check valve.
FIRE SERVICE
A water service for a customer which is used to supply a
fire protection system.
INSPECTION
Cross-connection control assessment and evaluation of all
fixtures and conduit connected to the customer's water system within
the property and structures.
ISOLATION
A method of backflow prevention in which a backflow prevention
assembly is located to correct a cross connection at an in-plant location
rather than at a water service connection.
PERMIT
A document which identifies the location of a backflow prevention
assembly, and specifies maintenance requirements for backflow prevention
assemblies.
POINT OF DELIVERY
The terminal end of service from the public potable water
system at the outlet side of the meter; this is the point at which
the public potable water system loses jurisdiction and sanitary control
over the water at its delivery to the customer.
POLLUTANT
A foreign substance that, if permitted to get in the public
water system, will degrade its quality so as to impair the usefulness
or quality of the water to a degree which does not create an actual
hazard to the public health but which does adversely and unreasonably
affect such water for domestic use.
POTABLE WATER
Water from any source which has been approved for human consumption
by the New York State Department of Health.
WATER SERVICE CONNECTION
That point in the customer's water system beyond the sanitary
control of the Village; it is the outlet end of the water meter and
always before any unprotected branch.
WATER SERVICE INSTALLATION
The establishment of a new point of delivery, reuse of an
existing point of delivery for a new or different customer, or the
modification of an existing point of delivery from the Village's potable
water system for any customer.