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Signs of a Clogged Septic or Graywater Filter
- POST a QUESTION or COMMENT about how to detect clogging of a septic filter or graywater filter: diagnosis & repair
Clogged septic system filters or septic media filters:
This document discusses the diagnosis and repair of clogging of various types of septic effluent filter systems and graywater filter systems to protect the septic drainfield or drywell system from damage.
These simple septic filters, such as greywater filters, washing machine filters, and filters at the effluent outlet of a conventional septic tank are all designed to protect the septic effluent absorption field or leach field.
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Signs of a Clogged Septic Tank Filter or Graywater Filter
Septic filters are placed either in the septic tank at the outlet tee or in a separate chamber outside of and close to
the septic tank. Graywater filters may be placed at the inlet to a drywell or graywater disposal system. Washing
machine filters are often installed at the clothes washer outlet hose.
Our photo shows evidence that sewage has been passing over the top of the septic tank baffle: a sure sign of a blockage in the septic tank or at its outlet or in the drainfield.
[Click to enlarge any image]
Before digging up a septic field or drywell or ordering a costly repair or septic system treatment, if your septic tank or greywater system use a filter, check for the following signs that the septic filter is clogged and needs cleaning:
- Sluggish drainage
in the building; if there is an access port to inspect the sewer line between the building and the septic tank, open it and flush a toilet. Does the wastewater run normally (in a rush, not a trickle) through the line to the septic tank? - Gurgling noises at building sinks or tubs
particularly when the sink or tub is not in use and a nearby toilet is flushed. (Thanks to reader Will for pointing this out - January 2017)
See GURGLING DRAINS - High effluent levels in the septic tank
open the septic tank at an inspection or service port. Is the effluent level abnormally high, at the top of the tank or over the baffles?
See details at SEPTIC TANK LEVELS of SEWAGE - Dirty septic filter
open the septic tank at the outlet end where the filter is probably installed; (Some systems may install an add-on filter in a small chamber just downstream from the septic tank, or upstream from a drywell which receives graywater. Inspect the septic filter for clogging and clean it anyway before returning it to the tank. If you see a sudden out rush of effluent out of the septic tank when you pull out the septic filter, then it's pretty likely that the problem was a clogged septic filter. - Drainfield abnormally dry
if the septic filter at the septic tank is clogged, effluent is being discharged abnormally slowly through it to the drainfield - which gives the drainfield a relief but is abnormal.
If the septic filter is very clogged effluent may be leaving the septic tank underground at one of its service ports or covers - look for wet areas around the septic tank.
If the drainfield becomes saturated and appears to fail after cleaning the septic filter (because you've now suddenly released a large volume of wastewater into the drainfield), further investigation of the drainfield condition and its piping is needed. - Septic filter monitors
are available from some effluent filter manufacturers to help determine when it's necessary to clean the filter.
...
Continue reading at SEPTIC FILTER MAINTENANCE or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX.
Or see SEPTIC FILTER CLOGGING FAQs - questions & answers about clogged septic filters, posted originally at the end of this page.
Or see these
Recommended Articles
- AEROBIC SEPTIC FILTER CLOGGING
- FILTERS SEPTIC & GREYWATER
- GRAYWATER FILTERS
- PLUMBING DRAIN NOISE DIAGNOSIS
- MEDIA FILTER SEPTIC SYSTEMS
- SEPTIC FAILURE CRITERIA
- SEPTIC FILTER CLOGGING SIGNS
- SEPTIC FILTER MAINTENANCE
- SEPTIC FILTER / GRAYWATER FILTER SOURCES
Suggested citation for this web page
SEPTIC FILTER CLOGGING SIGNS at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.
Or see this
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
- SEPTIC SYSTEM DESIGN ALTERNATIVES New York State Wastewater Treatment Standards - Individual Household Systems, Appendix 75-A (1990), Public Health Law 201(1)(1).
- New York State Alternative Septic System Design Regulations, Wastewater Treatment Standards - Individual Household Systems, Appendix 75-A, of Public Health Law 201(1)(1) 1990.
- The New Create an Oasis With Greywater, Art Ludwig; Buy New: $14.25. Ludwig is one of the most thoughtful, prolific, and sometimes controversial writers on gray water systems and alternative designs. We recommend his book as clear, easy-to-understand writing aimed at property owners who want or need to consider a graywater installation to conserve water, recycle water, reduce water use, or to reduce the load on their septic system. This is the latest edition of this Art Ludwig's greywater design book classic.
- Builder's Greywater Guide, Art Ludwig; Buy New: $10.17. Installation of Greywater Systems in New Construction & Remodeling; A Supplement to the Book "Create an Oasis With Greywater" (Paperback).
Quoting a review from Amazon: I recommend that you get the 3 companion books on greywater treatment "Create an Oasis", "Branched Drain Greywater Systems" and "Builder's Greywater Guide". The information in these volumes will keep most of us far more informed than most of the regulators, the system builders, and the experts-in-theory. These volumes are real-world gems.
Art Ludwig has cut to the core of wastewater issues. He's obviously done all of his homework, mulled-over the variables, and come up with a common sense, economically reasonable, environmentally responsible approach to wastewater. I expect to save money that I would have spent on a post-septic tank, aerobic unit that would seemingly have been ecologically responsible; but because of the technological overkill, ultimately that system would have defeated my altruistic environmental concerns.
... These books talk the talk and walk the walk better than anything else that I've seen. Buy a set for yourself, a set for your neighbors, and a set for the regulators. - Branched Drain Greywater Systems [superseded by "The New Create an Oasis with Greywater"], Art Ludwig. If you already have this book but are in the process of installing new gray water systems you should take a look at the newer edition listed first above in this section of our Greywater book recommendations. You may prefer the newest edition, but there is great information in this older version, perhaps all you need, and these copies are sold at very low prices - an aid to people of limited means.
- Create an Oasis With Greywater: Your Complete Guide to Choosing, Building and Using Greywater Systems, Art Ludwig, [superseded by new edition] (Paperback) You may prefer the newest edition, but as I said above, there is great information in this older version, perhaps all you need, and these copies are sold at very low prices - an aid to people of limited means.
- Rainwater Catchment Systems for Domestic Supply: Design, Construction and Implementation,
Erik Nissen-Petersen, John Gould. (Mr. Ludwig, while much appreciated, is not the only author providing really useful design guides for graywater systems--DF)
Quoting from an Amazon review: This book reviews the art of roof and ground catchment systems for rainwater. The water collected can be used for household or other purposes. The designs are aimed for individuals with limited access to electricity and/or civic water utilities. The text includes drawings, photographs and step-by-step instructions.
One might say the book is really written for the 'aid worker' since it also considers ethnic and gender issues that would be 'obvious' to the future owners of the the systems. - Guidelines on rainwater catchment systems for Hawaii, (CTAHR resource management publication) Patricia S. H Macomber. This more technical document may be especially helpful for rainwater collection and recycling systems for climates where there is heavy rainfall such as demonstrated for Hawaii.
- Design for Water: Rainwater Harvesting, Stormwater Catchment, and Alternate Water Reuse, Heather Kinkade-Levario. Quoting from Amazon's review: Design for Water is an accessible and clearly written guide to alternate water collection, with a focus on rainwater harvesting in the urban environment. The book:
Outlines the process of water collection from multiple sources-landscape, residential, commercial, industrial, school, park, and municipal systems Provides numerous case studies, Details the assembly and actual application of equipment, Includes specific details, schematics, and references.
All aspects of rainwater harvesting are outlined, including passive and active system setup, storage, storm water reuse, distribution, purification, analysis, and filtration. There is even a section on rainwater harvesting for wildlife.
In addition to rainwater, there are several affordable and accessible alternate sources, including cooling tower bleed-off water, air conditioning condensate, gray water, and fog collection. Design for Water is geared to providing those making development decisions and guidelines with the information they need to set up passive harvesting techniques. The book will especially appeal to engineers, landscape architects, municipal decision-makers, developers, and landowners.
Heather Kinkade-Levario is a land-use planner in Arizona and the author of the award-winning Forgotten Rain. She is president of Forgotten Rain L.L.C., a rainwater harvesting and stormwater reuse company. - The Toilet Papers: Designs to Recycle Human Waste and Water : Dry Toilets, Greywater Systems and Urban Sewage (Paperback) Sim Van Der Ryn, Wendell Berry; Quoting from an Amazon review: With a title like "Toilet Papers" and from a distinguished eco-architect like Sim Van der Ryn, I needed no intro or review to buy a copy of this little, but well researched historical over-view of effluent mitigation and current eco-friendly toilet design.
This book is filled with good line drawings and photographs to depict everything from the historical perspective to the current dry toilets and their construction.. - Rainwater Reservoirs Above Ground Structures for Roof Catchment: Most Common Rainwater Tanks in Comparison and Construction Manua, (Paperback) Rolf Hasse. [I have not reviewed this book --DF, but it may be helpful to people constructing rainwater collection and reservoir systems for use in arid climates such as Mexico and the U.S. Southwest.
- Quality issues in harvested rainwater in arid and semi-arid Loess Plateau of northern China, K. Zhu, L. Zhang, W. Hart, M. Liu, H. Chen (out of print, find by search and deferred order). Amazon's description may be helpful: Loess soils cover vast areas in the arid and semi-arid regions of northern China. Due to the lack of reliable surface water and ground-water, rainwater harvesting has played a prominent role in farmers' domestic usage and agricultural irrigation. An economical and valid type of water storage cistern with optimum design of components has been introduced to rural areas in the Loess Plateau. Different collection alternatives showed apparent variations in rainwater quality. By using different catchments, such as mortar roofs and cement-paved courtyards, compacted land or road surfaces, rainwater can be effectively collected for storage in cisterns. This study focused mainly on the quality of rainwater harvested from the different catchment systems and stored for different periods of time. By analysis of the water samples stored in these cisterns, it was evident that rainwater quality could be improved significantly by self-purification during the storage. With emphasis on rainwater quality affected by the different catchment systems, it was found that the measured inorganic compounds in the rainwater harvested from roof-yard catchment systems generally matched the WHO standards for drinking water, while the concentrations of some inorganic compounds in the rainwater collected from land and road surfaces appeared to be higher than the guideline values for drinking water, but generally not beyond the maximum permissible concentrations. However, Fecal Coliform, which is an important bacteriological parameter for the three catchment systems, exceeded the limits of drinking water to a greater extend. Trace amounts of 55 organic pollutants were identified, including aliphatic hydrocarbons, aromatic compounds and phthalate esters, etc. The analytical results indicated that roof-yard catchments that included the ''first flush'' usually provided safe drinking water with low organic contents, even for rainwater collected immediately after rainfall. In contrast, rainwater harvested from road surfaces had poor quality with respect to the organic constituents, regardless of stored time.
- City eying home water-recycling technology; uses bath and washer water for irrigation., (ReWater Systems' equipment for greywater irrigation): This is an article from: San Diego Business Journal [HTML] (Digital) available online in digital format. I have not (yet) reviewed it -- DF
- 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)
- "International Private Sewage Disposal Code," 1995, BOCA-708-799-2300, ICBO-310-699-0541, SBCCI 205-591-1853, available from those code associations.
- "Manual of Policy, Procedures, and Guidelines for Onsite Sewage Systems," Ontario Reg. 374/81, Part VII of the Environmental Protection Act (Canada), ISBN 0-7743-7303-2, Ministry of the Environment,135 St. Clair Ave. West, Toronto Ontario M4V 1P5 Canada $24. CDN.
- Manual of Septic Tank Practice, US Public Health Service's 1959.
- US EPA ONSITE WASTEWATER TREATMENT SYSTEMS MANUAL 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
- 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). 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 I recommend for professionals--DF.
- Onsite Wastewater Disposal, R. J. Perkins; Quoting from Amazon: This practical book, co-published with the National Environmental Health Association, describes the step-by-step procedures needed to avoid common pitfalls in septic system technology. Valuable in matching the septic system to the site-specific conditions, this useful book will help you install a reliable system in both suitable and difficult environments. Septic tank installers, planners, state and local regulators, civil and sanitary engineers, consulting engineers, architects, homeowners, academics, and land developers will find this publication valuable.
- Onsite Wastewater Treatment Systems, Bennette D. Burks, Mary Margaret Minnis, Hogarth House 1994 - one of the best septic system books around, suffering a bit from small fonts and a weak index. While it contains some material more technical than needed by homeowners, Burks/Minnis book on onsite wastewater treatment systems a very useful reference for both property owners and septic system designers.
- Septic Tank/Soil-Absorption Systems: How to Operate & Maintain, Equipment Tips, U.S. Department of Agriculture, 8271 1302, 7100 Engineering, 2300 Recreation, September 1982, web search 08/28/2010, original source: http://www.fs.fed.us/t-d/pubs/pdfimage/82711302.pdf
- Septic System Owner's Manual, Lloyd Kahn, Blair Allen, Julie Jones, Shelter Publications, 2000 $14.95 U.S. - easy to understand, well illustrated, one of the best practical references around on septic design basics including some advanced systems; a little short on safety and maintenance. Both new and used (low priced copies are available, and we think the authors are working on an updated edition--DF. Quoting from one of several Amazon reviews: The basics of septic systems, from underground systems and failures to what the owner can do to promote and maintain a healthy system, is revealed in an excellent guide essential for any who reside on a septic system. Rural residents receive a primer on not only the basics; but how to conduct period inspections and what to do when things go wrong. History also figures into the fine coverage.
- Water Wells and Septic Systems Handbook, R. Dodge Woodson. This book is in the upper price range, but is worth the cost for serious septic installers and designers.
Quoting Amazon: Each year, thousands upon thousands of Americans install water wells and septic systems on their properties. But with a maze of codes governing their use along with a host of design requirements that ensure their functionality where can someone turn for comprehensive, one-stop guidance? Enter the Water Wells and Septic Systems Handbook from McGraw-Hill.
Written in language any property owner can understand yet detailed enough for professionals and technical students this easy-to-use volume delivers the latest techniques and code requirements for designing, building, rehabilitating, and maintaining private water wells and septic systems. Bolstered by a wealth of informative charts, tables, and illustrations, this book delivers:
* Current construction, maintenance, and repair methods
* New International Private Sewage Disposal Code
* Up-to-date standards from the American Water Works Association
- Wells and Septic System, Alth, Max and Charlet, Rev. by S. Blackwell Duncan, $ 18.95; Tab Books 1992. We have found this text very useful for conventional well and septic systems design and maintenance --DF. Quoting an Amazon description:Here's all the information you need to build a well or septic system yourself - and save a lot of time, money, and frustration. S. Blackwell Duncan has thoroughly revised and updated this second edition of Wells and Septic Systems to conform to current codes and requirements. He also has expanded this national bestseller to include new material on well and septic installation, water storage and distribution, water treatment, ecological considerations, and septic systems for problem building sites.
- In addition to citations & references found in this article, see the research citations given at the end of the related articles found at our suggested
CONTINUE READING or RECOMMENDED ARTICLES.
- Carson, Dunlop & Associates Ltd., 120 Carlton Street Suite 407, Toronto ON M5A 4K2. Tel: (416) 964-9415 1-800-268-7070 Email: info@carsondunlop.com. Alan Carson is a past president of ASHI, the American Society of Home Inspectors.
Thanks to Alan Carson and Bob Dunlop, for permission for InspectAPedia to use text excerpts from The HOME REFERENCE BOOK - the Encyclopedia of Homes and to use illustrations from The ILLUSTRATED HOME .
Carson Dunlop Associates provides extensive home inspection education and report writing material. In gratitude we provide links to tsome Carson Dunlop Associates products and services.
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