A. 
The purpose of these regulations is to protect the Water district public water supply from contamination or pollution by isolating, within the consumer's internal distribution system, such contaminants or pollutants which could backflow or backsiphon into the public water system.
B. 
The Town of New Castle's cross-connection control program will be accomplished by complete containment by having the consumer install an acceptable backflow prevention device in every water service line to a facility for which a potential hazard exists.
As used in this Part 3, 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.
ACCEPTABLE DEVICES
Those devices or assemblies found to be acceptable for containment control in New York State in accordance with the Department of Health requirements.
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 consumers but would not adversely effect human health. Typical examples of such substances include, but are not limited to, food-grade dyes, hot water and stagnant water from fire lines in which no chemical additives are used.
AIR GAP SEPARATION
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.
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 pipes of a public water supply from any source other than its intended source.
BACKPRESSURE
The resulting backflow of contaminated, polluted or otherwise unacceptable quality water from a plumbing fixture or other consumer source(s) into a public water supply system due to a greater pressure within the consumer's water system.
BACKSIPHONAGE
The backflow of contaminated or polluted water or water of questionable quality from a plumbing fixture or other consumer source(s) into a public water supply system main due to a temporary negative or subatmospheric pressure within the public water supply system.
COMMISSIONER
The Commissioner of Public Works of the Town of New Castle Public Works Department or his designee.
CONSUMER'S WATER SYSTEM
The piping used to convey water supplied by a public water supply system throughout a consumer's facility.
CONTAINMENT
Cross-connection control which isolates the consumer's entire facility from the public water system so as to provide the protection necessary to prevent contamination of the public water supply in the event of backflow from the consumer's facility.
CONTAMINATION
The presence in water of a substance that tends to degrade its quality.
CROSS-CONNECTION
A physical connection through which a water supply could be contaminated.
DEGREE OF HAZARD
Whether a facility is rated as hazardous, aesthetically objectionable or nonhazardous.
DOUBLE-CHECK VALVE (DCV) ASSEMBLY, ACCEPTABLE
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.
FACILITY
Any residential, commercial or industrial building or structure, any irrigation system or any fire-fighting piping and hydrants which are connected to the Water district system.
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 consumers, including but not limited to laboratories, sewage treatment plants, chemical plants, hospitals and mortuaries.
INTERCONNECTION
A joining of two independently operated public water supply distribution systems.
LOCAL HEALTH DEPARTMENT ENGINEER
The Westchester County Health Department Engineer having jurisdiction.
NONHAZARDOUS FACILITY
One which does not require the installation of an acceptable backflow prevention device.
OWNER, CONSUMER and/or USER
The person or persons owning the premises connected with or being connected with the water system of the Water district.
PLUMBING CONTROL
Prevention and elimination of cross-connections within the consumer's water system by enforcement of building or plumbing codes.
REDUCED PRESSURE ZONE (RPZ) DEVICE, ACCEPTABLE
A minimum of two independently acting check valves, together with an automatically operated pressure differential relief valve located between the two check valves.
TOWN BOARD
The Town Board of the Town of New Castle.
WATER DISTRICT
The New Castle - Stanwood Consolidated Water District.