(1) Each mobile home lot shall be equipped with at least a four (4) inch PVC sewer connection below frost line and reaching at least four (4) inches above the surface of the ground. The sewer drainage inlet shall be positioned within four (4) feet of the mobile home and a minimum of ten (10) feet from the water riser. The connection between the mobile home drain and the sewer shall be made water tight by suitable fittings. A threaded or fitted in clamp connection shall be made at the mobile home drain and at the sewer outlet drain. The sewer outlet shall consist of a standard ferrule with a four (4) by three (3) inch screw plug. The screw plug shall be fastened by chain or other device to the concrete collar surrounding the sewer connection to prevent its removal from the site while the sewer connection is in use. The threaded hose connection may be connected to the ferrule directly or by use of pipe fittings. In the case of temporary pipe connections the two (2) inch pipe can be inserted into the ferrule and caulked to make an acceptable connection. For overnight parking of mobile homes, the plumbing fixtures within the mobile homes shall not be used unless provided with satisfactory means of disposal of all sewage wastes. These overnight mobile homes shall be parked close to the service buildings and the mobile home occupants shall be directed to use the facilities in the service building or the mobile home shall be connected to the sewage system. When a mobile home does not occupy the mobile home stand, the sewer riser pipe shall be capped with an airtight cap or plug. All sewer lines or parts thereof shall have a clean out, and shall be properly vented at each trailer site.
(2) All sewer lines shall be laid in trenches separated at least ten (10) feet horizontally from any drinking water supply line under pressure, at a grade of one-fourth (1/4) inch per foot. Sewer lines shall be at a grade sufficient to ensure a mean velocity of two (2) feet per second when flowing full. The system shall be designed for a minimum flow rate of at least two hundred (200) gallons per day per mobile home lot. The sewer line shall be permanently made root proof and water tight by means of approved glued joints or other approved method. All joints on the sewer lines shall be made water tight and every effort shall be made to minimize ground water infiltration into the sewage system. Connections in manholes shall be so constructed as to prevent surface water from entering the sanitary sewers. Manholes shall be provided at every change in direction, at every junction of two (2) or more branch sewers, and at intervals of not more than three hundred (300) feet. Cleanouts extending to grade may be used instead of manholes on four (4) and six (6) inch lines. Cleanouts should be provided wherever a manhole would otherwise be necessary and at intervals of not more than one hundred (100) feet. All cleanouts shall be capped with cleanout plugs. Each sewer main serving a row of mobile homes shall be vented at its upper end. Sewer service lines shall be a minimum of four (4) inch lines that service each mobile home. These four (4) inch lines shall be connected to a six (6) inch main which empties into the City’s sewer system. All materials used and installation shall be subject to approval of the plumbing inspector, or his designee, before installation. Mobile homes outside the limits of the City, but within the limits of the City’s jurisdiction for the enforcement of its codes, shall have a sewer system approved by the Nebraska Department of Environmental Quality and the Nebraska Department of Health and Human Services Regulation and Licensure. (Ref. 17-145, 17-149, 17-505 RS Neb.)
(3) This section shall not apply to mobile homes which have direct connections to the public sewer system. (Ord. No. 646, 11/2/04)