A. A complete system of sanitary sewer lines, including sewer stub terminals at the outside curb lines for each lot, shall be constructed throughout the entire subdivision, with connections to the sewer system serving the village. All necessary house connections shall be installed to make future excavations in the paved portions of the street unnecessary. Such sanitary sewers shall be subject to the approval of the village engineer and the state department of public health.
B. Upon the consent of the Planning and Zoning commission and the village board of trustees, subdivisions outside the village limits where no sewer outlet is available may be provided with individual sewerage disposal facilities such as septic tanks and tile seepage fields, which shall conform to the requirements of the county after standard seepage tests and other investigations indicate that the ground and topographic conditions in the subdivision are suitable for such individual sewerage disposal facilities, depending upon the seepage of the effluent therefrom into the soil. Such seepage tests shall be conducted by a registered professional engineer of the state who shall submit to the village for approval a detailed report outlining the locations and results of all such tests he has performed. Evidence shall be submitted that such systems are designed in a manner that each lot may, in the future, be served by the village sewerage system. If, after septic tanks have been utilized in any subdivision, a sewer system is installed so that the system is available to the lots therein, it shall thereafter be unlawful to utilize septic tanks for the disposal of sewerage, and all properties utilizing septic tanks shall discontinue their use and make connection to the sanitary sewer for disposal of sewage.
C. Where lots cannot, economically or for other reasons, be connected with the public sewerage system, provisions must be made for sanitary sewerage facilities approved by the village engineer and the Planning and Zoning commission.
D. Sanitary sewers shall be constructed of PVC, truss pipe or asbestos cement pipe only and shall have a minimum inside diameter of eight inches (8") with locked in place rubber gaskets and with slopseal or equivalent joints only. All pipe used in sewer construction shall meet current ASTM and village specifications. Manholes shall be provided at each change in direction or in pipe size, and otherwise at straight line intervals of not more than four hundred feet (400'). Monolithic drop manholes shall be required where invert elevations differ more than two and one-half feet (21/2'). House sewer service stubs having an internal diameter of not less than six inches (6") shall be installed to each lot through the use of Y connections prior to the construction of street pavements. Materials and methods of construction shall conform to specifications adopted by resolution by the village president and board of trustees. There shall be a minimum gradient of one-fourth inch (1/4") per foot from the house to the Y.
E. The design of sanitary sewers shall be based on a flow of not less than one hundred (100) gallons. The sewer shall be constructed at such a grade as to ensure a minimum velocity of flow of two feet (2') per second and a maximum velocity of flow of eight feet (8') per second. Sewer and water services, if in the same trench, shall be separated by at least one foot (1') vertically, the water being higher; otherwise, separate trenches must be used.
F. Sewers shall be placed on public rights of way and shall at no time be placed beneath and paralleling paving improvements except by special permission of the village board of trustees. If it is found necessary to construct such sewers or services beneath pavements, or if such sewers or services shall cross beneath existing or proposed pavements, all trenches caused thereby shall be filled with "stone screenings" or "trench backfill" placed in twelve inch (12") lifts as defined by the state standard specifications.
G. The design of a sanitary sewer system within a subdivision shall anticipate and provide capacity for all other sanitary sewerage from adjacent lands. Such designs shall provide adequate capacity for receiving such sewerage from these areas on a basis of the ultimate development of such areas.
H. All sanitary sewer mains shall be television inspected before approval and acceptance by the village board of trustees. (1978 Code § 7-4-7; amd. Ord. 2023-56, 9-7-2023)