InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.
Water test failure causes:
A first thing to check if a well fails a drinking water potability or other test is to be sure that the test was properly conducted. This article describes common mistakes people make when testing water and what to do about them.
This series of water testing articles explains many common water contamination tests for bacteria and other contaminants in water samples. We describe what to do about contaminated water, listing common corrective measures when water test results are
We include water testing and water correction measures warnings for home owners and especially for home buyers when certain conditions are encountered, with advice about what to do when these circumstances are encountered. Various water treatment methods for contaminated water are reviewed and the pros and cons of each are discussed.
Water Test Procedure Errors: Assure Proper Water Sample Testing Procedures Were Followed, Detecting Water Test Cheating
If a result is not satisfactory the following questions must be addressed:
Was the water test sample properly taken?
Water Sample Collection Procedure: (We remove the faucet, aerator which can harbor bacteria, run at least 20
minutes of water, 24 hours if house is unoccupied, and fill the container
without touching its interior.)
Water sample bottle: was a sterile water sample bottle used, a bottle provided by the water test lab?
Water sample location errors: was the water sample collected from an indoor plumbing fixture faucet, one that would normally be used to draw water for human consumption such as at a kitchen sink? If a water test person collected water from an outside hose faucet that fixture may itself have been unsanitary; if a water test person collected a water sample from plumbing components that have not been in recent use there may have been bacteria or contaminants in the piping or fixture.
Water sample delivery errors: was the water sample delivered to the water test lab at the proper time? Was the water sample refrigerated during transit? Depending on the type of water test (for bacteria for example) and the lab process used (the process must be one approved by the state health department), the water sample needs to arrive at the test lab within a specified time, such as four hours up to perhaps 12 hours. In some conditions such as hot weather it may be also necessary to refrigerate the sample, particularly if it is not being delivered to the water test lab immediately.
Did someone tamper with the water supply?
See CHEATING ON WATER TESTS: Testing Water for Real Estate Transactions - make sure your water test is valid
Has recent repair work been done on the building plumbing or water system that was not followed by an adequate disinfection when the work was completed? (New piping, water tank, controls in the building)
Was work recently done on the well itself? Installing a new submersible (in-well) pump and well line or foot valve means pulling the piping out of the well, lying it on the (unsanitary) ground surface, and then replacing in the well. The well should have been disinfected after such work. On occasion I've found a similar problem occurring with indoor plumbing work.
Is it a new well that has not been in daily use
Was the well improperly disinfected? with inadequate concentration, contact time, or time between treatment and follow-up testing? Additional details are at
WELL CHLORINATION SHOCKING PROCEDURE
Has the building been vacant and the water system not in use for an extended period of time
Is the well properly sealed against surface and subsurface water contamination?
If the well casing top is at or below the surface of the ground it's easy for unsanitary surface runoff to enter the well and contaminate drinking water
Even if the well casing is well above ground surface level, as is usually the case with modern drilled steel-casing wells, there may be leaks into the well casing that let unsanitary surface water enter the well. Examples of leaks into the well include
Leaks at the pitless adapter where the vertical-rising well pipe inside the well exits out of the side of the steel well casing. The pitless adapter is a special plumbing fitting that handles the passage of round well piping through the vertical sidewall of the steel well casing. On some wells we have found that the installer did not have a pitless adapter at hand so s/he simply applied putty or caulk around the opening in the well casing where the well pipe exited.
Leaks in the well casing itself from cracks or splits
Water filters as a source of contamination: Are there cartridge type or R.O. (reverse osmosis) filters in use on the water system? (These can be a source of bacterial contamination.)
When is Well Disinfection Required?
If the source of the contamination is not due to an ongoing situation, for example bad ground water source, then a disinfection of the water system will solve the problem.
What was the level of contamination detected? This question is explored next at BACTERIA LEVEL INTERPRETATION (live link given just below).
Continue reading at BACTERIA LEVEL INTERPRETATION or select a topic from closely-related articles below, or see our complete INDEX to RELATED ARTICLES below.
Try the search box below or CONTACT US by email if you cannot find the answer you need at InspectApedia.
Ask a Question or Search InspectApedia
Questions & answers about how procedural errors can cause a well water potability test to fail. So can cheating. .
Use the "Click to Show or Hide FAQs" link just above to see recently-posted questions, comments, replies, try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly.
Access Water Energy, PO Box 2061, Moorabbin, VIC 3189, Australia, Tel: 1300 797 758, email: email@example.com Moorabbin Office: Kingston Trade Centre, 100 Cochranes Rd, Moorabbin, VIC 3189
Australian supplier of: Greywater systems, Solar power to grid packages, Edwards solar systems, Vulcan compact solar systems, water & solar system pumps & controls, and a wide rage of above ground & under ground water storage tanks: concrete, steel, plastic, modular, and bladder storage tanks.
Smart Tank, Installation Instructions [ copy on file as /water/Smart_Tank_Flexcon.pdf ] - , Flexcon Industries, 300 Pond St., Randolph MA 02368, www.flexconind.com, Tel: 800-527-0030 - web search 07/24/2010, original source: http://www.flexconind.com/pdf/st_install.pdf
Typical Shallow Well One Line Jet Pump Installation [ copy on file as /water/Jet_Pump_Grove_Elect_Jet_Pumps.pdf ] - , Grove Electric, G&G Electric & Plumbing, 1900 NE 78th St., Suite 101, Vancouver WA 98665 www.grovelectric.com - web search -7/15/2010 original source: http://www.groverelectric.com/howto/38_Typical%20Jet%20Pump%20Installation.pdf
Typical Deep Well Two Line Jet Pump Installation [ copy on file as /water/Jet_Pump_Grove_Elect.pdf ] - , Grove Electric, G&G Electric & Plumbing, 1900 NE 78th St., Suite 101, Vancouver WA 98665 www.grovelectric.com - web search -7/15/2010 original source: http://www.groverelectric.com/howto/38_Typical%20Jet%20Pump%20Installation.pdf
Water Fact Sheet #3, Using Low-Yielding Wells [ copy on file as /water/Low_Yield_Wells_Penn_State.pdf ] - , Penn State College of Agricultural Sciences, Cooperative Extension, School of Forest Resources, web search 07/24/2010, original source: http://pubs.cas.psu.edu/FreePubs/pdfs/XH0002.pdf
Water pressure tanks - how to diagnose the need for air, how to add air, stop water pump short cycling to avoid damage - water storage water pressure tank safety.
WATER PUMP REPAIR GUIDE an specific case offers an example of diagnosis of loss of water pressure, loss of water, and analyzes the actual repair cost
Carson, Dunlop & Associates Ltd., 120 Carlton Street Suite 407, Toronto ON M5A 4K2. Tel: (416) 964-9415 1-800-268-7070 Email: firstname.lastname@example.org. The firm provides professional home inspection services & home inspection education & publications. 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 & illustrations from The Illustrated Home. Carson Dunlop Associates' provides extensive home inspection education and report writing material.
The Illustrated Home illustrates construction details and building components, a reference for owners & inspectors. Special Offer: For a 5% discount on any number of copies of the Illustrated Home purchased as a single order Enter INSPECTAILL in the order payment page "Promo/Redemption" space.
TECHNICAL REFERENCE GUIDE to manufacturer's model and serial number information for heating and cooling equipment, useful for determining the age of heating boilers, furnaces, water heaters is provided by Carson Dunlop, Associates, Toronto - Carson Dunlop Weldon & Associates Special Offer: Carson Dunlop Associates offers InspectAPedia readers in the U.S.A. a 5% discount on any number of copies of the Technical Reference Guide purchased as a single order. Just enter INSPECTATRG in the order payment page "Promo/Redemption" space.
The Home Reference Book - the Encyclopedia of Homes, Carson Dunlop & Associates, Toronto, Ontario, 25th Ed., 2012, is a bound volume of more than 450 illustrated pages that assist home inspectors and home owners in the inspection and detection of problems on buildings. The text is intended as a reference guide to help building owners operate and maintain their home effectively. Field inspection worksheets are included at the back of the volume.
Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order. Enter INSPECTAHRB in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
Special Offer: Carson Dunlop Associates offers InspectAPedia readers in the U.S.A. a 5% discount on these courses: Enter INSPECTAHITP in the order payment page "Promo/Redemption" space. InspectAPedia.com editor Daniel Friedman is a contributing author.
The Horizon Software System manages business operations,scheduling, & inspection report writing using Carson Dunlop's knowledge base & color images. The Horizon system runs on always-available cloud-based software for office computers, laptops, tablets, iPad, Android, & other smartphones