Village of Farmingdale, NY
Nassau County
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Table of Contents
Table of Contents
[Adopted 4-8-1974 by L.L. No. 1-1974 (Ch. 103, Art. II of the 1975 Code)]
A. 
Responsibility of Superintendent of Public Works. The Superintendent of Public Works of the Village of Farmingdale, or his designated agent, shall inspect the plumbing in every building or premises in the Village as frequently as in his judgment may be necessary to ensure that such plumbing has been installed in such a manner as to prevent the possibility of pollution of the water supply of the Village by the plumbing. The Superintendent of Public Works shall notify or cause to be notified, in writing, the owner or authorized agent of the owner of any such building or premises to correct, within a reasonable time set by the Superintendent of Public Works, any plumbing installed or existing contrary to or in violation of this article, and which in his judgment may, therefore, permit the pollution of the Village water supply or otherwise adversely affect the public health.
B. 
Inspection. The Superintendent of Public Works, or his designated agent, shall have the right of entry into any building, during reasonable hours, for the purpose of making inspection of the plumbing systems installed in such building or premises, provided that with respect to the inspection of any one-family dwelling, consent to such inspection shall first be obtained from a person of suitable age and discretion therein or in control thereof.
As used in this article, the following terms shall have the meanings indicated:
AGENCY
The department of the municipal government invested with the authority and responsibility for the enactment and enforcement of this article.
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 the receptacle.
APPROVED
Accepted by the agency as meeting an applicable specification stated or cited in this article, or as suitable for the proposed use.
AUXILIARY SUPPLY
Any water source or system other than the potable water supply that may be available in the building or premises.
BACKFLOW
The flow of water or other liquids, mixtures or substances into the distributing pipes of a potable supply of water from any source or sources other than its intended source. Backsiphonage is one type of backflow.
BACKFLOW PREVENTER
A device or means to prevent backflow.
BACKSIPHONAGE
Backflow resulting from negative pressures in the distributing pipes of a potable water supply.
BAROMETRIC LOOP
A loop of pipe rising at least 35 feet, at its topmost point, above the highest fixture it supplies.
CHECK VALVE
A self-closing device which is designed to permit the flow of fluids in one direction and to close if there is a reversal of flow.
CONTAMINATION
See "pollution."
CROSS-CONNECTION
Any physical connection between a potable water supply and any waste pipe, soil pipe, sewer, drain or any unapproved source or system. Furthermore, "cross-connection" is any potable water supply outlet which is submerged or can be submerged in wastewater and/or any other source of contamination. See "backflow" and "backsiphonage."
DRAIN
Any pipe that carries wastewater or waterborne wastes in a building drainage system.
FIXTURE, PLUMBING
Installed receptacles, devices or appliances supplied with water or that receive or discharge liquids or liquidborne wastes.
FLOOD-LEVEL RIM
The edge of the receptacle from which water overflows.
HAZARD, HEALTH
Any conditions, devices or practices in the water supply system and its operation which create or, in the judgment of the Superintendent of Public Works, may create a danger to the health and well-being of the water consumer. An example of a "health hazard" is a structural defect in the water supply system, whether of location, design or construction, that regularly or occasionally may prevent satisfactory purification of the water supply or cause it to be polluted from extraneous sources.
HAZARD, PLUMBING
Any arrangement of plumbing, including piping and fixtures, whereby a cross-connection is created.
HYDROPNEUMATIC TANK
A pressure vessel in which air pressure acts upon the surface of the water contained within the vessel, pressurizing the water distribution piping connected to the vessel.
INLET
The open end of the water supply pipe through which the water is discharged into the plumbing fixture.
PLUMBING SYSTEM
Includes the water supply and distribution pipes, plumbing fixtures, and traps; soil, waste and vent pipes; building drains and building sewers, including their respective connections, devices and appurtenances within the property lines of the premises; and water-treating or water-using equipment.
POLLUTION
The presence of any foreign substance (organic, inorganic, radiological or biological) in water that tends to degrade its quality so as to constitute a hazard or impair the usefulness of the water.
REDUCED-PRESSURE PRINCIPLE BACKFLOW PREVENTER
An assembly of differential valves and check valves, including an automatically opened spillage port to the atmosphere, designed to prevent backflow.
SURGE TANK
The receiving, nonpressure vessel forming part of the air gap separation between a potable and an auxiliary supply.
VACUUM
Any pressure less than that exerted by the atmosphere.
VACUUM BREAKER, NONPRESSURE-TYPE
A vacuum breaker designed so as not to be subjected to static line pressure.
VACUUM BREAKER, PRESSURE-TYPE
A vacuum breaker designed to operate under conditions of static line pressure.
WATER, NONPOTABLE
Water that is not safe for human consumption or that is of questionable potability.
WATER, POTABLE
Water free from impurities in amounts sufficient to cause disease or harmful physiological effects. Its bacteriological and chemical quality shall conform to the requirements of the Public Health Service drinking water standards or to the regulations of the public health authority having jurisdiction.
A. 
General. A potable water supply system shall be designed, installed and maintained in such manner as to prevent contamination from nonpotable liquids, solids or gases from being introduced into the potable water supply through cross-connections or any other piping connections to the system.
B. 
Cross-connections prohibited. Cross-connections between potable water systems and other systems or equipment containing water or other substances of unknown or questionable safety are prohibited except when and where, as approved by the authority having jurisdiction, suitable protective devices, such as the reduced-pressure-zone backflow preventer or equal, are installed, tested and maintained to ensure proper operation on a continuing basis.
C. 
Interconnections. Interconnection between two or more public water supplies shall be permitted only with the approval of the health authority having jurisdiction.
D. 
Individual water supplies. Cross-connections between an individual water supply and a potable public supply shall not be made unless specifically approved by the health authority having jurisdiction.
E. 
Connections to boilers. Potable water connections to boilers shall be made through an air gap or provided with an approved backflow preventer.
F. 
Prohibited connections to fixtures and equipment. Connection to the potable water supply system for the following is prohibited unless protected against backflow in accordance with Subsection H or as set out herein.
(1) 
Bidets.
(2) 
Operating, dissection, embalming and mortuary tables or similar equipment. In such installation the hose used for water supply shall terminate at least 12 inches away from every point of the table or attachments.
(3) 
Pumps for nonpotable water, chemicals or other substances. Priming connections may be made only through an air gap.
(4) 
Building drainage, sewer or vent systems.
(5) 
Any other fixture of similar hazard.
G. 
Refrigerating unit condensers and cooling jackets. Except where potable water provided for a refrigerator condenser or cooling jacket is entirely outside the piping or tank containing a toxic refrigerant, the inlet connection shall be provided with an approved check valve. Also adjacent to and at the outlet side of the check valve, an approved pressure relief valve set to relieve at five pounds per square inch above the maximum water pressure at the point of installation shall be provided if the refrigeration units contain more than 20 pounds of refrigerants.
H. 
Protection against backflow and backsiphonage.
(1) 
Water outlets. A potable water system shall be protected against backflow and backsiphonage by providing and maintaining at each outlet:
(a) 
Air gap. An air gap, as specified in Subsection H(2), between the potable water outlet and the flood-level rim of the fixture it supplies or between the outlet and any other source of contamination; or
(b) 
Backflow preventer. A device or means to prevent backflow.
(2) 
Minimum required air gap.
(a) 
How measured. The minimum required air gap shall be measured vertically from the lowest end of a potable water outlet to the flood rim or line of the fixture or receptacle into which it discharges.
(b) 
Size. The minimum required air gap shall be twice the effective opening of a potable water outlet unless the outlet is a distance less than three times the effective opening away from a wall or similar vertical surface, in which case the minimum required air gap shall be three times the effective opening of the outlet. In no case shall the minimum required air gap be less than shown in the following table.
Minimum Air Gaps for Generally Used Plumbing Fixtures
Minimum Air Gap
(inches)
Fixture
When Not Affected by Near Wall1
When Affected by Near Wall2
Lavatories and other fixtures with effective openings not greater than 1/2 inch diameter
1.0
1.50
Sink, laundry trays, gooseneck bath faucets and other fixtures with effective openings not greater than 3/4 inch diameter
1.5
2.25
Over-rim bath fillers and other fixtures with effective openings not greater than 1 inch diameter
2.0
3.0
Drinking water fountains, single orifice 7/16 (0.437) inch diameter, or multiple orifices having total area of 0.150 square inch (area of circle 7/16 inch diameter)
1.0
1.50
Effective openings greater than 1 inch
3
4
NOTES:
1
Side walls, ribs or similar obstructions do not affect air gaps when spaced from the inside edge of the spout opening a distance greater than three times the diameter of the effective opening for a single wall, or a distance greater than four times the diameter of the effective opening for two intersecting walls.
2
Vertical walls, ribs or similar obstructions extending from the water surface to or above the horizontal plane of the spout opening require a greater air gap when spaced closer to the nearest inside edge of the spout opening than specified in Note 1 above. The effect of three or more such vertical walls or ribs has not been determined. In such cases, the air gap shall be measured from the top of the wall.
3
Two times the diameter of the effective opening.
4
Three times the diameter of the effective opening.
(3) 
Approval of devices.
(a) 
Before any device for the prevention of backflow or backsiphonage is installed, it shall have first been certified by a recognized testing laboratory acceptable to the Superintendent of Public Works. Devices installed in a building potable water supply distribution system for protection against backflow shall be maintained in good working condition by the person or persons responsible for the maintenance of the system.
(b) 
The Superintendent of Public Works or his designee shall inspect routinely such devices and, if found to be defective or inoperative, shall require the replacement thereof. The fee for such inspection(s) shall be set from time to time by resolution of the Board of Trustees.[1]
[1]
Editor's Note: Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. I).
(4) 
Installation of devices.
(a) 
Vacuum breakers. Vacuum breakers shall be installed with the critical level at least six inches above the flood level rim of the fixtures they serve and on the discharge side of the last control valve to the fixture. No shutoff valve or faucet shall be installed beyond the vacuum breaker. For closed equipment or vessels such as pressure sterilizers, the top of the vessel shall be treated as the flood-level rim, but a check valve shall be installed on the discharge side of the vacuum breaker.
(b) 
Reduced-pressure principle backflow preventer. A reduced-pressure principle-type backflow preventer may be installed, subject to full static pressure.
(c) 
Devices of all types. Backflow and backsiphonage preventing devices shall be accessibly located, preferably in the same room with the fixture they serve. Installation in utility or service spaces, provided they are readily accessible, is also permitted.
(5) 
Tanks and vats: below-rim supply.
(a) 
Where a potable water outlet terminates below the rim of a tank or vat and the tank or vat has an overflow of diameter not less than given in the following table, the overflow pipe shall be provided with an air gap as close to the tank as possible.
Sizes of Overflow Pipes for Water Supply Tanks
Maximum Capacity of Water Supply Line to Tank
(gallons per minute)
Diameter of Overflow Pipe
(inches ID)
0 to 50
2
50 to 150
2 1/2
100 to 200
3
200 to 400
4
400 to 700
5
700 to 1,000
6
Over 1,000
8
(b) 
The potable water outlet to the tank or vat shall terminate a distance not less than 1 1/2 times the height to which water can rise in the tank above the top of the overflow. This level shall be established at the maximum flow rate of the supply to the tank or vat and with all outlets except the air-gap overflow outlet closed.
(c) 
The distance from the outlet to the high-water level shall be measured from the critical point of the potable water supply outlet.
(6) 
Protective devices required. Approved devices to protect against backflow and backsiphonage shall be installed at all fixtures and equipment where backflow and/or backsiphonage may occur and where a minimum air gap cannot be provided between the water outlet to the fixture or equipment and its flood-level rim.
(a) 
Connections not subject to backpressure. Where a water connection is not subject to backpressure, a vacuum breaker shall be installed on the discharge side of the last valve on the line serving the fixture or equipment. A list of some conditions requiring protective devices of this kind is given in the following table.
Cross-Connections Where Protective Devices Are Required, and Critical Level (C-L) Settings for Vacuum Breakers1
Fixture or Equipment
Method of Installation
Aspirators and ejectors
C-L at least 6 inches above flood level of receptacle served.
Dental units
On models without built-in vacuum breakers, C-L at least 6 inches above flood-level rim of bowl.
Dishwashing machines
C-L at least 6 inches above flood level of machine. Install on both hot and cold water supply line.
Flushometers (closet and urinal)
C-L at least 6 inches above top of fixture supplies.
Garbage-can cleaning machine
C-L at least 6 inches above flood level of machine. Install on both hot and cold water supply lines.
Hose outlets
C-L at least 6 inches above highest point on hose line.
Laundry machines
C-L at least 6 inches above flood level of machine. Install on both hot and cold water supply lines.
Lawn sprinklers
C-L at least 12 inches above highest sprinkler or discharge outlet.
Steam tables
C-L at least 6 inches above flood level.
Tanks and vats
C-L at least 6 inches above flood-level rim or line.
Trough urinals
C-L at least 30 inches above perforated flush pipe.
Flush tanks
Equip with approved ball cock. Where ball cocks touch tank water, equip with vacuum breaker at least 1 inch above overflow outlets. Where ball cock does not touch tank water, install ball cock outlet at least 1 inch above overflow outlet or provide vacuum breaker as specified above.
Hose bibbs (where aspirators or ejectors could be connected)
C-L at least 6 inches above flood level of receptacle served.
NOTES:
1 "Critical level" (C-L) is defined as the level to which the vacuum breaker may be submerged before backflow will occur. Where the C-L is not shown on the preventer, the bottom of the device shall be taken as the C-L.
(b) 
Connections subject to backpressure. Where a potable water connection is made to a line, fixture, tank, vat, pump or other equipment with a hazard of backflow or backsiphonage where the water connection is subject to backpressure and an air gap cannot be installed, the Superintendent of Public Works may require the use of an approved reduced-pressure principle backflow preventer. A partial list of such connections is shown in the following table.
Partial List of Cross-Connections Which May Be Subject to Backpressure
Chemical lines
Dock water outlets
Individual water supplies
Industrial process water lines
Pressure tanks
Pumps
Steam lines
Swimming pools
Tanks and vats: bottom inlets
Hose bibbs
(7) 
Barometric loop. Water connections where an actual or potential backsiphonage hazard exists may, in lieu of devices specified in Subsection H(6), be provided with a barometric loop. Barometric loops shall precede the point of connection.
(8) 
Double check-double gate valves. The Superintendent of Public Works may authorize installation of approved, double check-double gate valve assemblies with test cocks as protective devices against backflow in connections between a potable water system and other fluid systems which present no significant health hazard in the judgment of the Superintendent of Public Works.
(9) 
Low-pressure cutoff required on booster pumps. When a booster pump is used on a water pressure booster system and the possibility exists that a positive pressure of 10 pounds per square inch or less may occur on the suction side of the pump, there shall be installed a low-pressure cutoff on the booster pump to prevent the creation of a vacuum or negative pressure on the suction side of the pump, thus cutting off water to other outlets.
A. 
General requirements. It shall be the responsibility of building and premises owners to maintain all backflow preventers and vacuum breakers within the building or on the premises in good working order and to make no piping or other arrangements for the purpose of bypassing backflow devices.
B. 
Backflow preventers. Periodic testing and inspection schedules shall be established by the Superintendent of Public Works for all backflow preventers, and the interval between such testing and inspections and overhauls of each device shall be established in accordance with the age and condition of the device. Inspection intervals should not exceed one year, and overhaul intervals should not exceed five years. These devices should be inspected frequently after the initial installation to assure that they have been installed properly and that debris resulting from the installation has not interfered with the functioning of the device. The testing procedures shall be in accordance with the manufacturer's instructions when approved by the Superintendent of Public Works.
A. 
Notification of violation. The Superintendent of Public Works shall notify the owner, or authorized agent of the owner, of the building or premises in which there is found a violation of this article, of such violation. The Superintendent of Public Works shall set a reasonable time for the owner to have the violation removed or corrected. Upon the failure of the owner to have the defect corrected by the end of the specified time interval, the Superintendent of Public Works may, if in his judgment an imminent health hazard exists, cause the water service to the building or premises to be terminated and/or recommend such additional fines or penalties to be invoked as herein may be provided.
B. 
Fines. The owner or authorized agent of the owner responsible for the maintenance of the plumbing systems in the building who knowingly permits a violation to remain uncorrected after the expiration of time set by the Superintendent of Public Works shall, upon conviction thereof by the court, be required to pay a fine of not more than $250 or 15 days' imprisonment, or both, for each violation. Each day of failure to comply with the requirements of the local law, after the specified time provided under Subsection A above, shall constitute a separate violation.[1]
[1]
Editor's Note: Amended at time of adoption of Code (see Ch. 1, General Provisions, Art. I).