The purpose of this article is:
A. To protect the public potable water supply of the
Village of Scotia from the possibility of contamination by isolating
within its customer's internal distribution system or its customer's
private water system such contaminations or pollutants which could
backflow into the public water supply system; and
B. To comply with the requirements of the New York State
Sanitary Code Section 5-1.31.
For the purpose of this article, 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 the supply pipe,
measured vertically above the top rim of the vessel, and in no case
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 seat 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 PRINCIPLE BACKFLOW 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 device 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 will be submerged.
APPROVED WATER SUPPLY
Any water supply approved by, or under the public health
supervision of, a public health agency of the State of New York, County
of Schenectady or the Village of Scotia. In determining what constitutes
an approved water supply, the Department of Public Health of the State
of New York (herein called "State Health Department") shall have the
final judgment as to its safety and potability.
CONSUMER
Any person to whom water is sold and furnished from the Village
of Scotia.
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
Any unprotected connection between any part of the waterworks
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 Schenectady, 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 Scotia 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:
B.
Approved reduced pressure principle backflow
prevention device.
C.
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 takeoffs from the service line ahead of any
meter or backflow protective device located at the point of delivery
to the consumer shall be permitted.
SHALL
Is mandatory; "may" is permissive.
SUPERINTENDENT
Superintendent of Public Works of the Village of Scotia,
or his or her 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
of the consumer.
VILLAGE WATER SUPPLY
Approved water supply sold and delivered to consumers' premises
through the waterworks system of the Village of Scotia.
For the purpose of making any inspections or
discharging the duties imposed by this article, the Superintendent
shall have the right to enter upon the premises of any consumer. Each
consumer, as a condition of the continued delivery to his premises
of water from the Village water supply, shall be considered as having
stated his consent to the entry upon his or her premises to the Superintendent
for the purposes stated herein.
All presently installed prevention devices which
do not meet the requirements of this article but were approved devices
for the purposes described herein at the time of installation and
which have been properly maintained shall, except for the inspection
and maintenance requirements, be excluded from the requirements of
these rules so long as the Superintendent is assured that they will
satisfactorily protect the Village's water supply. Whenever the existing
device is moved from the present location or requires more than minimum
maintenance which constitutes a hazard to health, the unit shall be
replaced by a backflow prevention device meeting the requirements
of this article.