(A) Subdivision or lot divisions containing no lots less than one acre in area and located in the unincorporated areas within one and one-half miles of the corporate limits of the village may be served with individual sewage-disposal systems, except that individual sewage disposal systems shall be permitted in subdivisions annexed to the village after the effective date of this chapter only after the Village Board shall find that connection with a public or community system is not practicable, or there is an agreement between the subdivider and the village and a guarantee by the subdivider that all lots in the subdivision will be served with a public or community sewerage system within a specified period of time.
(B) Except as otherwise provided herein, no residential, commercial or industrial subdivision or development shall be approved unless it is served by sanitary sewers connected to the village’s sewer system.
(C) In the case of any structures, whether residential, commercial or industrial constructed prior to the adoption of this chapter and served by a septic system, the following shall apply:
(1) As soon as a public sanitary sewer main is contiguous to and available to service a structure or a septic system, said owner or owners must properly abandon the septic system and connect to the village’s public sanitary sewer system within one year; and
(2) All sanitary sewers which are installed in the public ways or in easements shall be deemed to be dedicated to the village upon the acceptance of the public improvements within the subdivision by the village.
(D) Sewer mains shall be of adequate size and shall serve the entire development.
(1) Sewer mains shall be designed according to the latest edition of the Standard Specifications for Water and Sewer Main Construction in Illinois or according to the State Environmental Protection Agency’s Recommended Standards for Sewage Works. The more stringent requirements of either shall apply.
(2) Before commencing the sewer layout, the developer shall confer with the village to determine the required size and grades for any trunk sewers traversing the subdivision.
(3) All sanitary sewers shall be constructed in accordance with the provisions of the latest edition of the Standard Specifications for Water and Sewer Main Construction in Illinois, as modified and/or more specifically defined in these paragraphs and sections. In case of conflict, the provisions of the following divisions shall apply.
(4) All materials shall be made in the U.S.A.
(E) Installation.
(1) Said mains shall, in general, be installed in the street right-of-way or in an easement adjacent thereto. In no case shall mains be installed within ten feet of a building.
(2) Sanitary sewers shall be extended to the edge of the development along public rights-of-way and at other points indicated by the Village Engineer.
(F) The minimum size of mains shall be eight inches, internal diameter.
(G) Sanitary sewer service laterals of a minimum of six-inch internal diameter shall be provided for each lot, parcel or tract prior to the construction of street pavements. Services shall extend to the property line.
(1) Service connection shall consist of a one-eighth sewer pipe bend set in the bell of the main wye or tee and the necessary lengths of the pipe with the terminus plugged.
(2) Service sewers shall have a minimum cover of 30 inches on private property and 48 inches in public rights-of-way. In all cases where sewer services are within ten feet of water mains or water services, the sewer service must be 18 inches lower than the water line.
(3) Two or more structures are not permitted to use a joint building service sewer.
(4) A minimum velocity of two feet per second shall be maintained.
(5) A cleanout (inspection port) shall be installed in the sewer service line, located within the property, one foot from the right-of-way line and flush with the existing or proposed grade. Materials used for the cleanout shall be approved by the Water and Sewer Department and Village Engineer before installation.
(H) Alignment shall be straight between manholes and follow the layout of the streets.
(I) Manholes shall be installed not more than 400 feet apart for sewers less than 18 inches in diameter or less and 500 feet for sewers 18 inches or more.
(1) Manhole diameter. Manhole diameter shall be four feet for sewer diameter of 21 inches and smaller, and five feet for sewer diameter of 24 inches and larger.
(2) Inspection manholes. An inspection manhole having a minimum diameter of 48 inches is required for all commercial and industrial buildings.
(a) The manhole shall be constructed on the building service sewer before it connects to the sewer main and, preferably, shall not be closer than five feet from the building.
(b) There shall be no flow into the inspection manhole except the flow from the building for which the inspection manhole is intended.
(J) If a lift station is part of the engineering design, it shall be shown in the plan elevation, and the specifications for such lift station shall be submitted with engineering plans.
(1) Lift stations shall be of the wet well type with submersible pumps and shall conform in all respect to the standards established by the State Environmental Protection Agency and the village.
(2) A trailer-mounted, engine-driven sewage pump of adequate capacity shall be given to the village for use during power outages.
(3) An alarm shall be installed to the village master panel in the event of failure at the lift station.
(4) Lift stations and force mains are not desirable nor recommended and shall be used to only after all other means have been exhausted.
(K) Sewer pipe and fittings shall be either extra-strength vitrified clay pipe (ASTM Spec. C700) with flexible compression joints (ASTM Spec. C-425) or semi-rigid composite pipe (truss pipe) (ASTM Spec. D-2680) with solvent weld or gasketed joints, or PVC sewer pipe, DR-35, meeting the requirements of ASTM Spec. D3034 and ASTM Spec. F-679. Joints shall be flexible elastomeric seals per ASTM Spec. D3212.
(L) Manholes shall be pre-cast concrete and in accordance with the appropriate provisions of Section 32 of the referenced Standard Specifications for Water and Sewer Main Construction in Illinois. Frames and closed lids in roadways shall be State Department of Transportation designation “Type 1 Frame and Closed Lid.”
(M) Where sanitary sewer mains of larger capacity than required to serve only the subdivision as delineated in the preliminary plat as required by the Village Board to serve future growth in the vicinity of the subdivision, the subdivider shall pay for only his or her portion (based on ordinance requirements for his or her subdivision) of the total cost of installation, the balance to be borne by the village. The village will pay the difference in cost between the size required for the subdivision and the larger size required by the Village Board, pursuant to an agreement entered into between the subdivider and the village.
(Ord. 1999-2, Subdivisions § 5, subs. .390, passed 2-15-1999)