A. 
All yard, area, court, cellar and subsoil drains and leaders shall be connected to a cistern or cesspool of proper size located outside a building and approved by the Superintendent of the Engineering Department or Building Department, and no such drain or leader shall drain into the sewerage system.
B. 
All auto laundry floor drains shall discharge into an approved oil separator and connect to the public sewer.
C. 
Oil separators installed in any building where volatile fluids are used must be readily accessible. They shall not receive the discharge of any water closet, rain leader, yard, court or area drain.
A. 
Each building shall be separately and independently connected to a public or private sewer, except where a building is located on the rear of the same lot with another building, in which case the plumbing and drainage system may be connected to the house sewer of the front building behind the house trap and fresh-air inlet, which shall be used for both buildings. All sewer connections from the public sewer in the street shall be a minimum of five-inch cast-iron pipe and shall be extended to the inside of the foundation wall. All joints shall be caulked with lead. All changes in direction shall be made with one-eighth bends or Y's. All sewer and water excavations seven feet or over in depth shall be properly braced or shored and protected. Materials for all connections from the public sewer in the street shall be extra-heavy cast-iron pipe, and joints shall be rubber compression seals, caulked with lead, Polyvinyl chloride SDR 28 or SDR 35 pipe and fittings. Connections from cast-iron pipe to polyvinyl chloride SDR 28 or SDR 35 pipe shall be made with a flexible-type coupling approved for underground use in accordance with specifications set forth in American Society for Testing and Materials Booklet D3034.
[Amended 10-21-1986 by L.L. No. 7-1986]
B. 
The sewer connections of each building shall be located directly in front of the building, and the house sewer shall lead in a straight line from the building to the public or private sewer, unless written permission is otherwise granted by the Superintendent of Public Works.
C. 
The use of cesspools is prohibited. All buildings shall be connected to the public sewer and maintained in good working order in conformity with the requirements of this chapter. In the event that any cesspool is found to be operative within the Village, upon notice, the owner shall immediately cause the cesspool and privy to be emptied, cleaned, disinfected and filled with fresh earth and cause a proper sewer connection to be made. Should the owner fail to comply with the requirements of said notice, the Village may cause the same to be done, and the expense thereby incurred shall be charged against such owner, and such expense shall be a lien upon the land affected, and the amount so assessed and levied shall be collected in the same manner as other taxes on real property.
[Amended 11-8-1995 by L.L. No. 8-1995]
[Amended 10-19-1993 by L.L. No. 8-1993]
A. 
Any multiple dwellings constructed on or after March 1, 2000, and any existing multiple dwellings where there is an alteration of the existing drainage system beyond 50% of the replacement value, built to accommodate or accommodating four families or more shall have an eight-inch sewer which shall connect with the public sewer service or with a private sewer which shall in turn connect with the public sewer. At the point of connection between the house sewer and such private or public sewer, a manhole shall be constructed by a licensed plumber at the expense of the owner and without cost to the Village. Such manhole shall be constructed in accordance with specifications and requirements of the Superintendent of Public Works Department.
[Amended 4-18-2000 by L.L. No. 4-2000]
B. 
Any property other than a one- or two-family dwelling in which there is generated solid or viscous substances which may cause an obstruction to the flow in a sewer or other interference with the proper flow of waste, such waste water shall flow through an approved exterior independent grease interceptor of a minimum one-thousand-gallon-capacity tank or larger as determined by the Building Department. Such interceptor shall be constructed of a six-inch monolithic poured reinforced concrete tank with two removable twenty-four-inch cast-iron covers set in an eight-inch concrete slab and installed at grade level. Where the Building Department has determined that there is insufficient space to install an exterior grease interceptor, a one-thousand-gallon fabricated, three-sixteenths-inch gauge steel grease interceptor or a one-thousand-gallon concrete grease interceptor as described in this section shall be installed in the interior of the same building where the waste is generated.
[Amended 7-5-1994 by L.L. No. 4-1994; 9-2-1998 by L.L. No. 8-1998]
C. 
A plot plan shall accompany the application for the plumbing permit indicating the drain piping from the interceptor to the building sanitary drain and the location of the interceptor on the premises.
D. 
Interceptors shall be cleaned and pumped out as necessary. A record shall be kept on the premises showing the date when cleaned and pumped out. All effluent shall be removed from the premises by a private contractor being duly licensed by the Nassau County Department of Consumer Affairs.
E. 
If any interceptor tank is abandoned, unused, leaking or defective, and the Village of Hempstead so requires, the tank and piping shall be immediately removed from the premises and replaced by a licensed plumber at the expense of the owner and without cost to the Village.
F. 
Notwithstanding the above, the use of interceptors shall comply with the provisions of the Nassau County Sewer Ordinance and the New York State Uniform Fire Prevention and Building Code.
Every building shall be provided with proper metallic gutters and rain leaders for conducting water from all roofs in a manner that shall protect the walls and foundation from damage. In no case shall the water from any rain leader be allowed to flow upon the sidewalk or adjoining property, but the water from said leaders may be conducted by proper pipes laid below the surface of the sidewalk to the street gutter or may be conducted by cast-iron pipe to a leaching cesspool located at least 15 feet from any building. No plumbing fixtures shall discharge into a leaching cesspool. Any series or group of leaders entering into one cesspool or dry well shall be trapped. Traps for area, floor or other drains shall be at least three inches in diameter. Discharge into a sewer is prohibited. Wherever pipes are laid beneath a sidewalk pursuant to this section, such work shall be done in accordance with the requirements of the Superintendent of the Engineering Department, and the sidewalk shall be restored to the same condition as before said work was done. The Superintendent of the Engineering Department may refuse to permit pipes to be placed under the sidewalks as provided in this section when storm sewers are available.
A. 
Used cast-iron house sewers may be utilized in connection with a new building or new plumbing only when the same are found by the Plumbing Inspector to be acceptable and in good condition.
B. 
Earthenware house sewers, when found to be in defective condition, shall be replaced with standard minimum five-inch cast-iron pipe, and all joints shall be made with lead and oakum. All underground connections both commercial and residential shall be of the bell and spigot type.
[Amended 8-6-2013 by L.L. No. 7-2013]
C. 
A house sewer shall be run in direct line from the street sewer to the inside of the foundation wall, with a Y with minimum five-inch cleanout to the house pit and cover if the house line is buried under the cellar floor, so that same may be readily accessible, the pit to be no less than three feet by three feet.
D. 
An iron running trap shall be placed in the house drain near the front wall of the building and on the sewer side of all connections. If placed outside the building, same shall be made accessible in a masonry manhole, the walls of which must be eight inches thick with an iron cover. When outside the house, same must not be less than three feet below the surface of the ground.
E. 
A house trap and fresh-air inlet on the house drain is required when the plumbing system of any building is altered by the addition of new soil, waste or vent lines.
F. 
The house trap shall have two cleanouts, with brass screw cap ferrules caulked in.
G. 
The location and type of sewer ejector used shall be first approved by the Plumbing Inspector.
H. 
No curb box or similar device with grating placed on the sidewalk shall be permitted for fresh-air inlets.
A. 
Service pipes three inches and larger in diameter shall be provided with a strainer approved by the Plumbing Inspector. Service pipes from all buildings shall be connected to street mains by means of taps, the size and number of which shall be determined by the Plumbing Inspector. Pipe materials shall be Type K copper for all pipes up to and including two inches in diameter; pipes over two inches in diameter shall be cast-iron water pipe of an approved type and weight and shall be equipped with a gate valve located at the wet cut. Each copper service main shall be equipped with an inverted key curb cock of the same diameter as the pipe and a curb box with rod to be placed at the curb or as directed by the Plumbing Inspector. Depth of pipe, whether copper or cast iron, shall be a nominal four feet. All materials and construction procedures shall be as directed by the Superintendent of Public Works.
B. 
Permanent water service shall be rendered by meter only. All meters shall be of a make and type approved by the Board of Trustees and be of such size as determined by and acceptable to the Plumbing Inspector. Meters shall be readily accessible, located above the lowest floor level and protected from frost. Water meters two inches in diameter and larger shall be provided within an approved bypass and valve that may be sealed. All service lines two inches or greater must have at least an approved double check backflow device and a meter on the service line bypass. Upon approval of the Board of Trustees from recommendations of the Village water plant and/or the Superintendent of Buildings, the bypass may be waived. This recommendation will be granted if the meter types installed are the approved nonmoving internal cavity type.
[Amended 9-6-2007 by L.L. No. 3-2007; 10-1-2013 by L.L. No. 9-2013]
C. 
The diameter of any street service bore shall be a minimum of one inch and be adequate to meet the requirements of the building at peak demand as determined by the Plumbing Inspector.
D. 
A separate stop or valve shall be placed upon the service pipe inside the front wall and a second valve behind the meter and test tee.
E. 
Residential water supply piping to a residential family dwelling, one up to four residences electing to install PEX domestic water supply piping shall be in conformance with the New York State Plumbing Code Section 605 and all applicable reference standards.
[Added 8-6-2013 by L.L. No. 7-2013]