The purpose of this article is:
A.
To protect the public potable water supply of the Village from the
possibility of contamination by isolating within its customers' internal
distribution system(s) or its customers' private water systems(s)
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
5-1.31.
The Village Superintendent shall be responsible for the protection
of the water distribution system from contamination due to the backflow
of contaminants through the water service connection. If, in the judgment
of said Superintendent, an acceptable backflow prevention device is
required at the district's water service connection to any customer's
premises, for the safety of the water system, the Superintendent or
his designated agent shall give notice in writing to said customer
to install such an acceptable backflow prevention device at each service
connection to this premises. The customer shall immediately install
such an acceptable backflow prevention device at each service connection
to this 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:
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.
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.
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.
Accepted by the Village Superintendent as meeting an applicable
specification stated or cited in this article or as suitable for the
proposed use.
Any water supply on or available to the premises other than
the Village public water supply. These auxiliary waters may include
water from another purveyor's public potable water supply or any natural
source(s), 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.
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 Village's supply system from any source
other than its intended source.
That individual or firm approved to accomplish the necessary
inspections and operational tests of backflow prevention devices.
The presence in water of a substance that tends to degrade
its quality.
A water user served by the Village supply system.
The piping used to convey water supplied by the Village water
supply system throughout a customer's facility. The system shall include
all those parts of the piping beyond the control point of the Village.
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 Village distribution system.
Whether a facility is rated as hazardous, aesthetically objectionable
or nonhazardous.
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.
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 are
laboratories, sewage treatment plants, chemical plants, hospitals
and mortuaries.
One which does not require the installation of an acceptable
backflow prevention device.
The Village 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.
A device containing a minimum of two independently acting
check valves, together with an automatically operated pressure differrential
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.
The Manager of the Village.
The customer's water system shall be open for inspection at
all reasonable times to authorized representatives of the Village.
The Superintendent shall rate a customer's water system according
to its degree of hazard to the public water supply system. Some of
the factors to be considered are the use and availability of contaminants,
the availability of an auxiliary water supply and the type of fire-fighting
system in use.
An acceptable backflow prevention device shall be installed
on each service line to a customer's water system at or near the property
line or immediately inside the building being served but, in all cases,
before the first branch line leading off the service line, as follows:
The design of the installation of an acceptable backflow prevention
device must be prepared in accordance with New York State laws and
regulations. The design must be approved by the Superintendent and
all agencies required by the applicable New York State and Suffolk
County laws and regulations.
It shall be the duty of the customer at any premises where backflow
prevention devices are installed to have certified inspections and
an operational test made at least once a year. In those instances
where the Superintendent deems the hazard to be great enough, he may
require certified inspections at more frequent intervals. Certified
inspections and operational tests must also be made when any backflow
prevention device is to be installed, repaired, overhauled or replaced,
in addition to the requirement of an annual certified inspection and
operational test. All inspections and tests shall be at the expense
of the customer and shall be performed by the device manufacturer's
representative, Village personnel or by a certified tester approved
by the Village Superintendent. The Village shall make available the
names, addresses and telephone numbers of those persons who are certified
as testers for backflow prevention devices. It shall be the duty of
the Superintendent to see that certified inspection and operational
tests of the backflow prevention devices are made. The customer shall
notify the Superintendent in advance, in writing, when the tests are
to be undertaken, so that he or his representative may witness the
tests if it is so desired. These devices shall be repaired, overhauled
or replaced at the expense of the customer whenever said devices are
found to be defective. Records of such tests, repairs and overhaul
shall be kept and made available to the Water District Superintendent.
Copies of all testing and maintenance records shall be sent to the
Superintendent immediately after the work is performed.
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 under this section and § 160-25, be excluded from the requirements of these rules so long as the Superintendent is assured that they will satisfactorily protect the utility system. Whenever the existing device is moved from the present location or requires more than minimum maintenance or constitutes a hazard to health, the unit shall be replaced by a backflow prevention device meeting the requirements of this article.
No water service connection to any customer's water system shall
be installed or maintained by the Village unless the water supply
is protected as required by state laws and regulations and this article.
Service of water to any premises shall be discontinued by the Superintendent
if a backflow prevention device required by this article is not installed,
tested and maintained or if it is found that a backflow prevention
device has been removed or bypassed. Service will not be restored
until such conditions or defects are corrected.
