Potable water. Water made available at taps for private or public consumption or piped within a building shall be secured only from the public water-supply system of the City of Kingston, except where such public water supply is not reasonably available, or where supplies from other sources are to be used for industrial purposes. In cases where the public water-supply system is not reasonably available, and where another supply is proposed for domestic or industrial use, such supply cannot be made available without written permission from the Ulster County Department of Health. Such permission shall be given by the Department of Health only upon written application. This application shall stipulate in detail, with diagrams if required, the connections proposed and the use to which the water supply is put. Application for water service from the public water supply of the City of Kingston shall be made to the Kingston Water Department.
Cross-connections. The City of Kingston water supply and/or any supply to be utilized for human consumption or available for consumption shall be distributed through systems entirely independent of any industrial supply from other sources or nonpotable supply is prohibited. Any connection made between the City of Kingston water supply and any private potable systems shall be acceptable only if the Water Department agrees to accept responsibility for supervision as provided in the regulations of Chapter V of the New York State Sanitary Code.
Wherever possible, water-service and house sewer pipes should be laid in separate trenches. Where they must be laid in the same trench, the water pipe shall be laid on a bench or on solidly tamped backfill at least 12 inches above the top of the sewer pipe and at least three feet center to center between the water pipe and sewer pipe. All water service piping shall be subject to inspection and approval by the Plumbing Inspector and/or the Superintendent of the Kingston Water Department.
A. 
Every potable water outlet shall be protected from backflow, preferably by having the outlet end from which the water flows spaced a distance from the flood-level rim of the receptacle into which the water flows sufficient to provide an approved air gap. Where it is not possible to provide an air gap, then fixture shall be equipped with an accessibly located backflow preventer, complying with "American Standard Backflow Preventers in Plumbing Systems" (ASA A40.6), installed between the control valve and the fixture or outlet.
B. 
Where it is not possible to provide an air gap or backflow preventer, as may be the case in connections to cooling jackets, condensers or other industrial or special appliances, then the Plumbing Inspector shall require a separate tank supply or such other means of protection as may be practicable and desirable.
All water pumps, tanks, wells, filters, softeners and similar appliances and devices shall be protected from superficial ground or surface water and other contamination by approved covers, wants, copings or casings. Where pumps take suction from pipes directly connected to the water mains of the City of Kingston, this connection must be approved by the Department of Health after review and approval by the Superintendent of the Kingston Water Department.
All nonpressure potable-water-supply tanks shall be properly covered to prevent entrance of foreign material into the water supply. Soil or waste lines shall not be permitted to pass directly over such tanks or manholes in pressure tanks.
All water pipes, tanks, appliances and devices subject to freezing temperatures shall be effectively protected against freezing. All water-service pipes shall be laid in accordance with the permanent Rules and Regulations of the Kingston Water Department.
Water-distributing pipe, tube and fittings. Material for water-distributing pipes and tubing shall be of brass, copper, lead, cast iron, wrought iron, open-hearth iron or steel, with appropriate approved fittings. All threaded ferrous pipe and fittings shall be galvanized or cement-lined. When used underground in corrosive soil, all ferrous pipe and fittings shall be coal-tar-enamel-coated. From the Kingston public water mains to the curb, the service line shall be Type K copper tube or 3 A, lead. The curb stop and connection on the street main shall be as approved by the City of Kingston Water Department.
Water service. The water-service pipe from the street main to the water-distribution system for the building shall be of sufficient size to furnish an adequate flow of water to meet the requirements of the building at peak demand, and in no case shall be less than the tap at main and three-fourths-inch service.
A main shutoff valve on the water-service pipe shall be provided near the curb, and also an accessible shutoff valve with a drip shall be provided on the inner side of the foundation wall. Supply lines taken from pressure or gravity tanks shall be valved at or near their source. A swing check valve must be installed on the house side of the water meter.
Separate stopcocks or valves, always accessible, shall be placed at the foot of each riser line, and, in multiple dwellings or commercial buildings, for each individual fixture or group of fixtures controlled by each tenant.
All water pipes shall be so graded or pitched that the entire system or parts thereof can be drained. The formation of traps or sags shall be avoided where possible. When unavoidable, such sags or traps, or inverts, shall have provisions for complete draining.
Overflow pipes for gravity tanks shall discharge above and within six inches of a roof or catch basin, or they shall discharge over an open, water-supplied sink. Adequate overflow pipes shall be provided and in no case shall such overflows be connected directly to any drainage system.
Where recirculating pumps are used in a hot-water beating system, consideration must be given to differential pressures developing between the cold-water system and the heating system. When necessary, in the judgment of the Plumbing Inspector, check valves will be required on the cold-water make-up line.
An approved temperature-relief valve conforming to the requirements of "American Standard Listing Requirements for Relief and Automatic Gas Shut-Off Valves for use on Water Heating Systems" (ASA Z21.22) shall be installed on the hot-water storage tank to prevent the storage of hot water at a higher temperature than boiling point at atmospheric pressure.
Combination pressure-and-temperature-relief valves or separate pressure-and-temperature-relief valves, which have been tested and approved by, or meet the specifications of, the American Gas Association or the National Board of Casualty and Surety Underwriters, shall be considered acceptable.
A vacuum valve or other approved device must be installed in the cold-water-supply piping near the point where it connects into a domestic hot-water tank.
Check valves shall not be installed anywhere in the cold-water-supply pipe leading to a domestic hot-water heating system unless a suitable pressure-relief valve is also installed.
If the relief outlets of pressure, temperature or other relief valves or flushing connections are carried to the drainage system, such piping shall not be connected directly to the drainage system but shall be connected as an indirect waste.
No department, officer or employee of the city having charge or jurisdiction of the city's water mains and/or sewers, either within or without the territorial limits of the city, shall issue a permit for sewer or water connection to any person, firm, association or corporation unless such person, firm, association or corporation is a registered licensed plumber and is the holder of a certificate of competency issued by the Examining Board of Plumbers of the City of Kingston, New York.
No one other than a registered licensed Master Plumber shall install the primary city water supply to water heaters and domestic water heating. This includes automatic or nonautomatic, instantaneous or tank type water heaters regardless of the type of fuel used to operate such heaters. This also includes tank- or tankless-type water heaters or coils that are connected directly or indirectly with heating systems or any other apparatus or device that heats domestic hot water and receives its supply from the Kingston city water system. All water heaters and domestic water heating come under the provisions of the term "plumbing system" and must have the approval of the Plumbing Inspector before installation is undertaken. All automatic water heaters shall have a T.P. relief valve installed. No relief valve shall be connected directly to any house drain, sewer, soil, waste or vent pipe.