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House to Septic Tank Sewer Line, Model Specifications for Septic Systems
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House to Septic Tank Sewer Line Specifications:
Section 5 of these model septic design regulations discusses the design specifications for installation, placement, use of bends and turns, materials, and separation requirements for the installation of a house sewer line (the line between the house and the septic tank or the piping between a building and a municipal sewer system).
This document uses the New York State wastewater treatment standard for individual household septic systems (Appendix 75-A) to provide an example of state regulated design and installation of both conventional tank and leach field septic systems and alternative septic system designs, including raised septic systems, septic mound systems, intermittent sand filter septic systems, and evaportion-transpiration septic systems.
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House sewer line design specifications - Connecting the Building to the Septic Tank
Effective Date: 12/01/90
[DF NOTE: this section of NYS regulations discusses the installation of house sewer lines which conduct waste from the building interior to an outside septic system or onsite wastewater treatment system. Many state codes, including New York, focus on long-used well-established onsite septic system designs, and omit discussion of other, more recent septic and onsite wastewater handling methods such as aerobic septic systems.
Readers should therefore also be sure to see SEPTIC SYSTEM DESIGN ALTERNATIVES as well as the other septic system design and design alternative topics which have links at the end of this article.]
(a) House sewers are laid on firm foundation at a minimum grade of one-quarter inch per foot preferably without bends. At least one cleanout with a properly fitted plug is to be provided. The house sewer shall allow for venting of gases from the sewage system.
(b) House sewer construction including materials shall comply with the applicable requirements of the State Uniform Fire Prevention and Building Code contained in 9NYCRR, Parts 903 through 907, inclusive, and Part 1250.
© A minimum horizontal separation of 10 feet should exist between the house sewer and any water line. Where lines must cross, the water service line shall be at least 12 inches above the house sewer. If a water line must pass below the house sewer, the vertical separation must be at least 18 inches.
(d) Suction waterlines shall never cross under house sewers or any other component of the sewage system.
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Continue reading at DRAIN & SEWER PIPING - topic home, or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX.
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SEWER LINE REPLACEMENT if your sewage piping or drain system needs repair or replacement
SEPTIC SYSTEM DESIGN BASICS - home
DICTIONARY of SEPTIC SYSTEM & WASTEWATER TERMS for a more complete dictionary of septic system and wastewater terminology
SEPTIC & SEWAGE TREATMENT CODES & REFERENCES - home
U.S. SEPTIC AUTHORITIES & DESIGN SPECIFICATIONS - start of this series
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SEWER LINE SPECIFICATIONS at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.
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INDEX to RELATED ARTICLES: ARTICLE INDEX to SEPTIC SYSTEMS
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Citations & References
In addition to any citations in the article above, a full list is available on request.
- New York State Department of Health, APPENDIX 75-A WASTEWATER TREATMENT STANDARDS - INDIVIDUAL HOUSEHOLD SYSTEMS , [PDF] New York State Department of Health, 3 February 2010, retrieved 3/1/2010, original source: https://www.health.ny.gov/regulations/nycrr/title_10/part_75/appendix_75-a.htm
- US EPA ONSITE WASTEWATER TREATMENT SYSTEMS MANUAL [online copy, free] Top Reference: US EPA's Design Manual for Onsite Wastewater Treatment and Disposal, 1980, available from the US EPA, the US GPO Superintendent of Documents (Pueblo CO), and from the National Small Flows Clearinghouse. Original source http://www.epa.gov/ORD/NRMRL/Pubs/625R00008/625R00008.htm Onsite wastewater treatment and disposal systems, Richard J Otis, published by the US EPA. Although it's more than 20 years old, this book remains a useful reference for septic system designers. U.S. Environmental Protection Agency, Office of Water Program Operations; Office of Research and Development, Municipal Environmental Research Laboratory; (1980)
- Advanced Onsite Wastewater Systems Technologies, Anish R. Jantrania, Mark A. Gross. Anish Jantrania, Ph.D., P.E., M.B.A., is a Consulting Engineer, in Mechanicsville VA, 804-550-0389 (2006), Advanced Onsite Wastewater Systems Technologies. Outstanding technical reference especially on alternative septic system design alternatives. Written for designers and engineers, this book is not at all easy going for homeowners but is a text we recommend for professionals--DF.
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