[Adopted 9-5-1995 by L.L. No. 1-1995;
readopted at time of adoption of Code (see Ch. 1, General Provisions,
Art. I)]
The purpose of this article is:
A. To protect the public potable water supply of the
Town of Barre, Orleans County, New York from the possibility of contamination
by isolating within its customers' internal distribution system(s)
or its customers' private water system(s) such contaminations or pollutants
which could backflow into the public water system; and
B. To comply with the requirements of the New York State
Sanitary Code 5-1.31.
The Town of Barre Water Department shall be
responsible for the protection of the Town of Barre distribution system
from contamination due to the backflow of contaminated water through
the water service connection. If in the judgment of said Water Department
an acceptable backflow prevention device is required at the Town's
water service connection to any customer's premises, the designated
agent shall give notice, in writing, to said customer to install such
an acceptable backflow prevention device at each service connection
to these premises. The customer shall immediately install such approved
device or devices at his own expense, and failure, refusal or inability
on the part of the customer to install said device or devices immediately
shall constitute a ground for discontinuing water service to the premises
until such device or devices have been properly installed.
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 of 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 affect 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 Barre Water Department as meeting
an applicable specification stated or cited in this article or as
suitable for the purposed use.
AUXILIARY WATER SUPPLY
Any water supply on or available to the premises other than
the Town of Barre's approved public water supply. These auxiliary
waters may include water from another purveyor's potable water supply
or any natural source(s), such as a well, spring, river, stream, lake
or pond, etc., or use 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. Any
auxiliary water supply must be approved by the Orleans County Health
Department and NYS DEC.
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 pipe of the Town of Barre 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 supply system.
CUSTOMER'S WATER SYSTEM
The piping used to convey water supplied by the Town of Barre's
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 systems. 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 distribution system.
DEGREE OF HAZARD
Whether 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
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: laboratories,
sewage treatment plant, 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 Barre water system, including the source,
transmission mains, distribution system and storage facilities servicing
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 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.