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WATER PUMPS, TANKS, TESTS, WELLS, REPAIRS
CHEMICAL CONTAMINANTS in WATER
DRINKING WATER TESTING
DRINKING WATER - EMERGENCY PURIFICATION
PLUMBING SYSTEM INSPECT DIAGNOSE REPAIR
WATER CONSERVATION MEASURES
WATER CONTAMINANT LEVELS
WATER FILTERS, HOME USE
WATER HAMMER NOISE DIAGNOSE & CURE
WATER ODORS, CAUSE CURE
WATER PUMP REPAIR GUIDE
WATER PRESSURE LOSS DIAGNOSIS & REPAIR
WATER SOFTENERS & CONDITIONERS
WATER TANK: USES, TROUBLESHOOTING
WATER TESTS, CONTAMINANTS, TREATMENT
WATER TREATMENT EQUIPMENT CHOICES
WELLS CISTERNS & SPRINGS
WELL CHLORINATION & DISINFECTION
WELL FLOW RATE
WELL WATER PRESSURE DIAGNOSIS
WELL YIELD IMPROVEMENT
WINTERIZE A BUILDING
Limitations of colloidal silver disinfection's raise serious questions about the ability colloidal silver solutions to produce safe, potable drinking water: this article describes the limitations of relying on colloidal silver disinfection to make drinking water safe and potable. The article cites research on the use of colloidal silver and it cites health authority warnings about colloidal silver in various applicaitons including in water solution, in water disinfection, in drinking water, and in water filters.
We explain that some biological or pathogenic drinking water contaminants are either resistant to standard disinfection approaches such as chlorination while other water contaminants such as hazardous chemicals or particulates are simply not addressed by disinfection.
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Colloidal silver water filters for water disinfection & purification
Silver ceramic water filters are ceramic water filters which have been treated with colloidal silver - a step which might increase water filter effectiveness by killing bacteria in water passing through the system. Silver ceramic water filters are discussed separately in detail at CERAMIC FILTERS for WATER DISINFECTION.
But even a casual review of colloidal silver research indicates that while this substance may be safe for humans and other animals in topically applied uses (burns for example) (Maneewattanapinyo 2011), colloidal silver, including in newer nanoparticle forms (Panyala 2008) presents serious health risks when ingested such as by drinking water containing colloidal silver. And Ruparelia (2008) adds the interesting observation that bacterial susceptability to colloidal silver varies by species/strain.
Watch out: while there is research supporting the use of colloidal-silver-impregnated water filters (Oyanedel-Craver 2007, Bielefeldt 2009) not all colloidal silver impregnated filters are effective.
A ceramic water filtration system coated with silver particles was created by Ron Rivera of Potters for Peace and used in developing countries for water disinfection. - Wikipedia. An investigation [PDF] into the effectiveness of this silver-coated ceramic water filter was completed in 2001.
That study showed that the silver-treated ceramic filter removed 98-100% of the indicator bacteria present in the source water. The filter does not remove arsenic (and probably not other similar chemicals), and the filter is unreliable for removal of pesticides or VOCs. -
See "Investigation of the Potters for Peace Colloidal Silver Impregnated Ceramic Filter, Report 1: Intrinsic Ineffectiveness" [PDF]
Effectiveness of colloidal silver as a water disinfectant
Electrolytically dissolved silver has been used as a water disinfecting agent including in drinking water supplies of the Russian Mir orbital space station and the International Space Station.
Watch out: Ceramic water filters [which can be effective if properly used - (Tien 2008, Petros 2011)] should not be confused with attempts to "purify" water by simply adding unreliably formulated colloidal silver products to drinking water. The use of colloidal silver as a bacteriocide is well established (citations below) but its safety and effectiveness as an add-in water disinfectant does not appear supported by research we could find through 2014.
Watch out: a review of more than 400 articles of scholarly research conducted (Google Scholar August 2014) by the editor could not find a single research claim supporting the effectiveness of the direct use of home-made home-mixed colloidal silver in water solutions as a disinfectant - an approach we have observed taken by some homeowners in Mexico.
Water disinfectant effectiveness, particularly using bleach, is also limited by water pH
We explain in this separate but important article that WELL DISINFECTANT pH ADJUSTMENT may also be necessary for effective water disinfection.
Research on the Effectiveness & Safety of Colloidal Silver in Various Applications
Continue reading at WATER DISINFECTION LIMITATIONS or select a topic from the More Reading links shown below.
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