West Virginia Code of State Rules › Agency 64 - Health › Title 64 - LEGISLATIVE RULE WEST VIRGINIA DEPARTMENT OF HEALTH AND HUMAN RESOURCES › Series 64-41 - Design, Information And Procedural Manual For Mobile Home Parks › Section 64-41-4 - Sewage Collection And Treatment (Refer to Section 9 of the Mobile Home Regulations)

Current through Register Vol. XLI, No. 28, July 12, 2024
4.1. An
				adequate and safe sewerage system shall be provided in all mobile home
				developments for conveying and disposing of sewage from mobile homes, service
				buildings and other development facilities. The sewerage system shall be
				designed, constructed, and maintained in accordance with all applicable
				regulations and the requirements of the state department of health.
4.2. Wherever possible, the sewerage system
				of a mobile home development shall be connected to a public sewerage system. If
				public sewers are not available within a reasonable distance of the mobile home
				development, adequate treatment facilities shall be installed to dispose of the
				sewage. Proposed sewage disposal facilities must be approved by the state
				department of health prior to construction with the exception that approval of
				septic tank, soil absorption sewage disposal systems of less than 1,500 gallons
				capacity shall be obtained from the local health department. The effluent from
				such treatment facilities shall be discharged only as permitted by the state
				department of health.
4.3. Sewage
				collection and treatment systems for mobile home parks shall be designed and
				constructed in accordance with the publication, "Permit Procedures and Design
				Requirements for Small Sewage and Water Systems", regulations, specifications
				and instructions issued by the state department of health.
4.4. Riser Pipes
4.4.1. A sewer service connection shall be
				provided at each mobile home lot. The sewer riser pipe should be located so
				that it provides a nearly vertical connection between the riser pipe and the
				drainage outlet of the mobile home. The ANSI Standard for Mobile Homes,
				A119.1-1971 specifies that the drain outlet shall be 3 inches in diameter and
				shall be located in the rear half section of the mobile home. The location of
				the sewer inlet on the stand should be as close as possible to the drain outlet
				on the mobile home. In order to achieve this, it is recommended that the riser
				pipe be located under the mobile home. A good location is at the center line of
				the stand and 40 feet from edge of the stand. This location will serve most of
				the mobile homes now being built.
4.4.2. The sewer service connection utilizes
				a riser pipe that is at least 4 inches in diameter and that terminates at least
				4 inches above the ground surface. The tubing or piping connecting the drain
				outlet of the mobile home and the sewer riser pipe should be noncollapsible,
				semirigid, and 3 inches in diameter. The line connecting the drain outlet and
				sewer riser shall be sloped at not less than 1/4 inch per foot. A reducer from
				4 to 3 inches should connect the bell end tubing or piping. All materials used
				for sewer connections should be corrosion resistant, nonabsorbent and durable,
				with a smooth surface. No subsurface trap is necessary in the sewer riser pipe
				since the plumbing fixtures in mobile homes are adequately trapped and
				vented.
4.4.3. Other types of sewer
				connections, such as those that utilize a threaded type connection, are
				acceptable if they are watertight, airtight and otherwise equivalent to the
				recommended connection. When the sewer connection is not in use, the bell of
				the riser pipe shall be capped with an airtight cap or plug. This is necessary
				to exclude rodents and other objects and to prevent the escape of
				odors.