This article shall be known as the "Water Cross-Connection Control
Law of the Village of Buchanan."
The intent of this article is:
A. To protect the public potable water supply served by the Village
of Buchanan Water Department and any and all water districts within
the Village, hereinafter referred to as the "districts," from the
possibility of contamination or pollution which could backflow or
back-siphon into the public water system.
B. To promote the elimination or control of existing cross-connections,
actual or potential, between its customers' in-plant potable water
system and nonpotable systems.
C. To provide for the maintenance of a continuing program of cross-connection
control which will effectively prevent the contamination or pollution
of all potable water systems by cross-connection.
Pursuant to the Federal Safe Drinking Water Act of 1974 and statutes promulgated in Article 2 of the Public Health
Law and in Part 5, Section 5-1.31, of the State Sanitary Code (10
NYCRR Part 5), the New York State Department of Health has undertaken
a program for preventing water from unapproved sources from entering
the public potable water system. Subpart 5-1 of the State Sanitary
Code, Section 5-1.32, requires that the supplier of all public water
shall protect the public water system by containing potential contamination
within the premises of each individual water user.
As used in this article, the following terms shall have the
meanings indicated:
AIR GAP
A physical separation sufficient to prevent backflow between
the free-flowing discharge end of the potable water system and any
other system; physically defined as a distance equal to twice the
diameter of the supply side pipe diameter, but never less than one
inch.
APPROVED
Accepted by the Village of Buchanan Water Department or any
water district within the Village, meeting an applicable specification
stated or cited in this regulation or as suitable for the proposed
use.
ATMOSPHERIC VACUUM BREAKER
A device which prevents back-siphonage by creating an atmospheric
vent when there is either a negative pressure or subatmospheric pressure
in a water system.
AUXILIARY WATER SUPPLY
Any water supply on or available to the premises other than
the purveyor's approved public potable water supply.
BACKFLOW
The flow of water or other liquids, mixtures or substances
and/or positive or reduced pressure in the distribution pipes of a
potable water supply from any source other than its intended source.
BACKFLOW PREVENTER
A device or means designed to prevent backflow or back-siphonage.
Most commonly categorized as air gap, reduced-pressure-principle device,
double-check valve assembly, pressure vacuum breaker, atmospheric
vacuum breaker, hose bibb vacuum breaker, residential dual check,
double check with intermediate atmospheric vent and barometric loop.
BACKPRESSURE
A condition in which the owner's system pressure is greater
than the supplier's system pressure.
BACK-SIPHON
The flow of water or other liquids, mixtures or substances
into the distribution pipes of a potable water supply system from
any source other than its intended source, caused by a sudden reduction
of pressure in the potable water supply system.
BAROMETRIC LOOP
A fabricated piping arrangement rising at least 35 feet at
its topmost point above the highest fixture it supplies. It is utilized
in water supply systems to protect against back-siphonage.
CONTAINMENT
A method of backflow prevention which requires a backflow-preventer
device at the water service entrance immediately after the water meter
or, in the event of no meter, immediately after the point of entry.
CONTAMINANT
Any physical, chemical, microbiological or radiological substance
or matter in water.
CROSS-CONNECTION
Any actual or potential connection between the public water
supply and a source of contamination or pollution.
DEPARTMENT OF HEALTH
The State of New York Health Department and its agent, the
Westchester County Department of Health.
DISTRICT
Village of Buchanan Water Department or any water district
within the Village.
DOUBLE-CHECK VALVE ASSEMBLY (DCV)
An assembly of two independently operating spring-loaded
check valves with tightly closing shutoff valves on each side of the
check valves, plus properly located test cocks for the testing of
each check valve.
FIXTURE ISOLATION
A method of backflow prevention in which a backflow preventer
is located to correct a cross-connection at an in-plant location rather
than at a water service entrance.
HOSE BIBB VACUUM BREAKER
A device which is permanently attached to a hose bibb and
which acts as an atmospheric vacuum breaker.
OWNER(S)
Any person or persons who have a legal title to or license
to operate or inhabit a property upon which a cross-connection is
present.
PERMIT
A document issued by the district which allows the use of
a backflow preventer. A permit to construct and a completed works
permit is also required from the State of New York Department of Health.
PERSON
Any individual, partnership, company, public or private corporation,
political subdivision or agency of the State Department, agency or
instrumentality of the United States or any other legal entity.
POLLUTANT
A foreign substance that, if permitted to get into the public
water system, will degrade its quality so as to constitute a moderate
hazard or 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.
PRESSURE VACUUM BREAKER
A device containing one or two independently operated spring-loaded
check valves and an independently operated spring-loaded air inlet
valve located on the discharge side of the check or checks. "Device"
includes tightly closing shutoff valves on each side of the check
valves and properly located test cocks for the testing of the check
valves.
REDUCED-PRESSURE-PRINCIPLE BACKFLOW PREVENTER (RPZ)
An assembly consisting of two independently operating approved
check valves with an automatically operating differential relief valve
located between two check valves, tightly closing shutoff valves on
each side of the check valves, plus properly located test cocks for
the testing of the check valves and the relief valve.
WATER SERVICE ENTRANCE
The point in the owner's water system beyond the sanitary
control of the district; generally considered to be the outlet end
of the water meter and always before any unprotected branch.
The Village Engineer or his delegated representative in charge
of the Buchanan Water Department is invested with the authority and
responsibility for the implementation of a cross-connection control
program and for the enforcement of the provisions of this article.
The following partial listing gives examples of the types of
facilities which will require an acceptable RPZ or air gap to be installed
in the service connection to the public water distribution system:
Type of Facility
|
Potential Hazard
|
---|
Sewage and industrial wastewater treatment plants and pumping
stations, sewer flushers, etc.
|
Sewage and industrial wastewater, contaminated water, toxic
chemicals, etc.
|
Paper manufacturing or processing, dye plants, petroleum processing,
printing plants, chemical manufacturing or processing, industrial
fluid systems, steam generation, rubber processing or tanneries
|
Toxic chemicals, water-conditioning compounds (Examples: toxic
dyes, acids, alkalies, solvents, quaternary ammonia compounds, mercury,
chromium, etc.)
|
Canneries, breweries, food processing, milk processing, ice
manufacturing, meat packers, poultry processing, rendering companies,
etc.
|
Process wastewater, steam, detergents, acids, caustics or refrigeration
lines
|
Hospitals, clinics, laboratories, veterinary hospitals, mortuaries,
embalmers, etc.
|
Bacterial cultures, laboratory solutions, blood and tissue waste,
toxic materials, etc.
|
Shipyards, marinas, etc.
|
Sea water, sewage, contaminated water, etc.
|
Metal-plating, photo-processing, laundries, commercial car washes,
commercial refrigeration systems, dry-cleaning establishments, etc.
|
Toxic chemicals, concentrated cleaning agents, solvents, etc.
(Examples: cyanides, fluorides, copper, chromium, caustic and acid
solutions, etc.)
|
Commercial greenhouses, spraying and irrigation systems using
weedicides, herbicides or exterminators
|
Toxic chemicals (Examples: ammonium salts, phosphates, 2.4D
sodium arsenite, lindane, malathion, etc.)
|
Boiler systems, cooling towers or internal fire-fighting systems
using conditioners, inhibitors, corrosion-control chemicals, etc.
|
Toxic chemicals (Examples: hydrazine, sodium compounds, antifreeze
solutions, etc.)
|
Typically: apartment buildings, cooling towers, warehouses
|
|
The following partial listings are examples of the types of
facilities which will require an acceptable DCV to be installed in
the service connection to the public water distribution system:
Type of Facility
|
Potential Hazard
|
---|
Customer fire-protection loops or fire storage tanks, with no
chemical additives
|
Stagnant water, objectionable tastes, odors
|
High-temperature potable water
|
Objectionable temperatures
|
Utilization of food-grade dyes
|
Objectionable color
|
Complex plumbing systems in commercial buildings
Typically: barbershops, beauty salons, churches, apartment buildings,
gas stations, supermarkets, nursing homes, construction sites or carnivals
|
Plumbing errors, obsolete plumbing equipment or poor plumbing
inspection/correction programs
|
The containment approach does not apply. The following partial
listing indicates the type of facility that would qualify:
Type of Facility
|
Potential Hazard
|
---|
Private homes
|
None; rely on internal plumbing control
|
Dry commercial establishments without complex plumbing systems
|
None; rely on internal plumbing control
|
Any existing backflow preventer shall be allowed by the district
to continue in service unless the degree of hazard is such as to supersede
the effectiveness of the present backflow preventer or result in an
unreasonable risk to the public health. Where the degree of hazard
has increased, as in the case of a residential installation converting
to a business establishment, any existing backflow preventer must
be upgraded to a reduced-pressure-principle device or a reduced-pressure-principle
device must be installed in the event that no backflow device was
present.
The district strongly recommends that all new retrofit installations
of reduced-pressure-principle devices and double-check valve backflow
preventers include the installation of strainers located immediately
upstream of the backflow device. The installation of strainers will
preclude the fouling of the backflow devices due to both foreseen
and unforeseen circumstances occurring to the water supply system
such as water main repairs, water main breaks, fires, periodic cleaning
and flushing of mains, etc. These occurrences may stir up debris within
the water main that will cause fouling of backflow devices installed
without the benefit of strainers.
All testers of backflow-prevention devices shall be approved
by the New York State Department of Health. Prior to performing certification
tests in the Village of Buchanan, each backflow-prevention device
tester must demonstrate to the Village Engineer and/or the foreman
of the district that he/she is currently authorized to conduct such
tests as approved by the Department of Health.
The district will publish a list of fees or charges for the
following services or permits:
A. Initial application and renewal fees.
If any clause, sentence, paragraph, section or part of this
article shall be adjudged by any court of competent jurisdiction to
be invalid, such judgment shall not affect, impair or invalidate the
remainder thereof but shall be confined in its operation to the clause,
sentence, paragraph, section or part thereof directly involved in
the controversy in which such judgment shall have been rendered.
This article shall take effect immediately upon filing with
the Secretary of State.