Hi all…while there is some information on the effects of backwashing drinking water biofilters with chlorinated water, there are very few papers on backwashing such biofilters with chloraminated water. In a just published paper in WST: Water Supply researchers trying to determine the cause of rapid monochloramine decay observed in treated water concluded that “backwashing of media filters with [...]
Hi all…The USEPA released a report in Feb 2017 entitled “Sampling Guidance for Unknown Contaminants in Drinking Water.” If you’re like me, it’s one of those reports that probably won’t make it to the top of your reading list until you really need it. You can save some time during a contamination event by downloading it [...]
The USEPA’s Contaminant Candidate List 4 (CCL 4) was finalized November 17, 2016. The CCL is a list of contaminants that are currently not subject to any proposed or promulgated national primary drinking water regulations, but are known...
Hi all…the Water Research Foundation has just released a report entitled “A Methodology for Locating and Managing Dynamic Potential Source Water Contaminant Data – Project 4581.” “The purpose of the project was to develop and demonstrate a methodology for identifying potential sources of contamination upstream of drinking water intakes, particularly from above ground storage tanks [...]
HI all…with comments due to Health Canada on ‘Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonate (PFOS) in Drinking Water’ guidelines on Sept 2, a new article reveals that two reported potential health effects of these compounds (early menopause and reduced kidney function) are actually a result of having those conditions rather than being the cause. This isn’t [...]
Hi all…lead continues to be the drinking water issue of 2016 as evidenced by the attention it is receiving in the media and will be at the upcoming 17th National Conference on Drinking Water and CWWA’s 2nd National Water and Wastewater Conference. Another interesting article by Graham Gagnon’s research group at DalTech has just appeared in Environmental [...]
Hi all…the authors of this just published ‘Journal of Water Supply: Research and Technology – Aqua’ paper conducted a demonstration project to evaluate a range of sampling methods and supporting techniques for tackling lead in drinking water in Alberta, with the cities of Calgary and Edmonton as case studies. The sampling protocols specified by Health [...]
Hi all…tucked away on page 11 in this ‘Pediatrics’ journal Policy Statement is a recommendation by the American Pediatric Society that: “State and local governments should take steps to ensure that water fountains in schools do not exceed water lead concentrations of 1 ppb (1 µg/L).” It seems this is attracting media attention south of [...]
Hi all…a two part paper on the presence and fate of 220 emerging contaminants in two Windsor Ontario wastewater treatment plants (WWTPs) and one drinking water treatment plant (WTP) has just been published. Part I provides drinking water professionals with additional information on what compounds may be present in source waters as well as some performance [...]
Hi all…The Water research Foundation (WRF) has announced that an updated 6 min video to help Canadian water utilities communicate about emerging contaminants is now available at no cost. The video, Protecting Our Drinking Water, is geared toward Canadian audiences and is available for Canadian utilities to link to or to post on their own [...]
