For the purpose of this chapter, unless it is plainly evident from
the context that a different meaning is intended, certain terms used
herein are defined as follows:
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 supply pipe,
measured vertically above the top rim of the vessel, and in no case
no less than one inch.
APPROVED CHECK VALVE
A check valve that seats readily and completely. It must
be carefully machined to have free-moving parts and assured watertightness.
The face of the closure element and valve sear must be bronze, composition
or other noncorrodible material which will seat tightly under all
prevailing conditions of field use. Pins and bushings shall be bronze
or other noncorrodible, nonsticking material, machined for easy, dependable
operation. The closure element (e.g., clapper) shall be internally
weighted or otherwise internally equipped to promote rapid and positive
closure in all sizes where this feature is obtainable.
APPROVED DOUBLE CHECK VALVE ASSEMBLY
An assembly of at least two independently acting approved
check valves, including tightly closing shutoff valves on each side
of the check valve assembly and suitable test cocks plus connections
available for testing the watertightness of each check valve.
APPROVED REDUCED PRESSURE PRINCIPAL BACK-FLOW PREVENTION DEVICE
A device incorporating two or more check valves and an automatically
operating differential relief valve located between the two checks,
two shutoff valves, and equipped with necessary appurtenances for
testing. The devices shall operate to maintain the pressure in the
zone between the two check valves, less than the pressure on the public
water supply side of the device. At cessation of normal flow the pressure
between the check valves shall be less than the supply pressure. In
case of leakage of either valve, the differential relief valve shall
operate to maintain this reduced pressure by discharging to the atmosphere.
To be approved, these devices must be readily accessible for maintenance
and testing and installed in a location where no part of the device
shall be submerged.
APPROVED WATER SUPPLY
Any supply approved by, or under the public health supervision
of, a public health agency of the State of New York, the County of
Delaware or the Village of Walton. In determining what constitutes
an approved water supply, the Department of Health of the State of
New York (herein called the "State Health Department") shall have
the final judgment as to its safety and potability.
CERTIFIED TESTER
That individual or firm approved by the State Health Department
to make inspections and operational tests of backflow prevention devices.
CONSUMER
Any person to whom water is sold and furnished from the Village
of Walton.
CONTAMINATION
An impairment of the quality of the Village water supply
by the presence of any foreign substance (organic, inorganic, radiological
or biological) to a degree which creates a hazard to the public health.
CROSS-CONNECTION
An unprotected connection between any part of the Village
water works system used or intended to supply water for drinking purposes
and any source or system containing water or substance that is not
or cannot be approved as safe, wholesome and potable for human consumption.
NONTOXIC SUBSTANCE
Any substance of a nonpoisonous nature that may create a
moderate or minor hazard to the water supply system.
PERSON
Any natural person, firm, association, organization, partnership,
trust or association or persons, joint venture, corporation, or company
and includes the United States, the State of New York, the County
of Delaware, any special purpose district, and any officer or agent
thereof.
PREMISES
Integrated land area, including improvements thereon undivided
by public thoroughfares or water distribution mains of the Village
of Walton and where all parts of the premises are operated under the
same management and for the same purpose.
PROTECTIVE DEVICE
Any of the following devices:
(2)
Approved reduced pressure principle backflow prevention device.
(3)
Approved double check valve assembly.
SERVICE CONNECTION
The terminal end of a service connection from the Village
water supply at its point of delivery to the consumer. If a meter
is installed, "service connection" means the downstream end of the
meter. No unprotected take-offs from the service line ahead of any
meter or backflow protective device located at the point of delivery
to the consumer shall be permitted.
SUPERINTENDENT
The Superintendent of Water of the Village of Walton, or
his authorized representative.
TOXIC SUBSTANCE
Any substance (liquid, solid or gaseous), including raw sewage
and lethal substances, that when introduced into the water supply
system creates or may create a danger to the health and well being.
VILLAGE WATER SUPPLY
An approved water supply sold and delivered to the consumers'
premises through the water works system of the Village of Walton.