Town of Ithaca, NY
Tompkins County
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Table of Contents
Table of Contents
A. 
Each service connection from a public water system for supplying water to premises having an auxiliary water supply shall be protected against backflow of water from the premises into the public water system unless the auxiliary water supply is approved as an additional source by the Water Purveyor and is satisfactory to the public health agency having jurisdiction with regard to quality and safety or the auxiliary water supply is properly abandoned.
[Amended 5-13-1991 by L.L. No. 8-1991]
B. 
Each service connection from a public water system for supplying water to premises, on which any substance other than the supplied water is handled under pressure in such fashion as to permit entry into the water system, shall be protected against backflow of the water from the premises into the public system. This shall include the handling of process waters and waters originating from the public water supply system which may have been subject to deterioration in sanitary or chemical quality.
[Amended 5-13-1991 by L.L. No. 8-1991]
C. 
Each service connection from a public water system for supplying water to premises on which any substance that is unusually toxic or a danger to human health is or may be handled in liquid form, or in solid or gaseous form if such substance is intended to be used after conversion to liquid form, even if such substance is not under pressure, shall be protected against backflow of the water from the premises into the public water system. Examples of such premises include, but are not limited to, plating factories, premises on which cyanide is handled and hospitals. This subsection is not intended to apply to normal residential installations.
[Amended 5-13-1991 by L.L. No. 8-1991]
D. 
Backflow prevention devices shall be installed on the service connection to any premises that have internal cross-connections, unless such cross-connections are abated to the satisfaction of the Water Purveyor.
E. 
It shall be the responsibility of the water user to provide and maintain these protective devices, and each one must be of a type acceptable to the State Health Department.
The protective device required shall depend on the degree of hazard as tabulated below:
A. 
At the service connection to any premises where there is an approved auxiliary water supply handled in a separate piping system with no known cross-connection, the public water supply shall be protected by an approved double check valve assembly.
[Amended 5-13-1991 by L.L. No. 8-1991]
B. 
At the service connection to any premises on which there is an auxiliary water supply where cross-connections are known to exist which cannot be presently eliminated, or where the auxiliary water supply is not approved, the public water supply system shall be protected by an air gap separation or an approved reduced pressure principle backflow prevention device.
[Amended 5-13-1991 by L.L. No. 8-1991]
C. 
At the service connection to any premise on which a substance that would be objectionable (but not necessarily hazardous to health if introduced into the public water supply) is handled so as to constitute a cross-connection, the public water supply shall be protected by an approved double check valve assembly.
D. 
At each service connection from a public water system for supplying water to premises on which any substance that is unusually toxic or a danger to human health is or may be handled in liquid form, or in solid or gaseous form if such substance is intended to be used after conversion to liquid form, even if it is not under pressure, the public water supply shall be protected by an air-gap separation or an approved reduced pressure principle backflow prevention device. This device shall be located as close as practicable to the water meter, and all piping between the water meter and receiving tanks shall be entirely visible.
[Amended 5-13-1991 by L.L. No. 8-1991]
E. 
At each service connection from a public water system for supplying water to premises on which any substance that is unusually toxic or dangerous to human health is or may be handled under pressure, the public water supply shall be protected by an air-gap separation or an approved reduced pressure principle backflow prevention device. The air gap shall be located as close as practicable to the water meter, and piping between the water meter and receiving tanks shall be entirely visible. If these conditions cannot reasonably be met, the public water supply shall be protected with an approved reduced pressure principle backflow prevention device, providing the alternative is acceptable to the Water Purveyor.
[Amended 5-13-1991 by L.L. No. 8-1991]
F. 
At the service connection to any sewage treatment plant or sewage pumping station, the public water supply shall be protected by an air gap separation. The air gap shall be located as close as practicable to the water meter and all piping between the water meter and receiving tanks shall be entirely visible. If these conditions cannot be reasonably met, the public water supply shall be protected with an approved reduced pressure principle backflow prevention device.
[Amended 5-13-1991 by L.L. No. 8-1991]
See Article VII, Supplementary Provisions to CCC Law, of Part 2, Supplementary Cross-Connection Control, of this chapter.