Bill’s Water News

Bill’s Water News2020-09-10T15:49:15-04:00

Stay in the know on all things drinking water

Dr. William B. Anderson is a Research Associate Professor and the Associate Director of the Water Science, Technology & Policy Group at the University of Waterloo. He has been active in drinking water quality and treatment research for more than 40 years, recently focusing on pathogen identification/removal/inactivation, assessment of adsorbed and desorption of contaminants on microplastics, better understanding of the role of colloidal nutrients on cyanobacterial growth in drinking water reservoirs, perfluorinated compounds, and biological filtration.

The past 15 years, Bill has maintained an email service drawing attention to items of interest to drinking water professionals including, for example, the latest research articles, regulatory updates, outbreak reports, topical issues, and media stories. Bill’s email service has expanded over time to include all interested individuals. These emails are now also archived here in a blog format as they are released, which can be explored by category or simply by scrolling through the posts below.

If you would like to join Bill’s email list for updates straight to your inbox, you can send an email to Bill to be added to the list.

411, 2021

Removal of phytotoxins in filter sand used for drinking water treatment

November 4th, 2021|Categories: Drinking Water, Emerging Contaminants, Papers & Articles, Pathogens, Water Treatment|0 Comments

researchers from Denmark are studying phytotoxins – those produced by plants – from the potential of them being contaminants with the potential to impair drinking water quality. Of several different phytotoxins spiked into groundwater and ultimately treated by 5 different filter types, two of them, jacobine N-oxide and senecionine N-oxide, were found to be non-biodegradable. They were also able to identify some degradation products.

110, 2021

Drinking Water DBPs & Congenital Malformations

October 1st, 2021|Categories: Drinking Water, Emerging Contaminants, Papers & Articles, Pathogens, Water Treatment|0 Comments

The study examined 623,468 births and concluded that “TTHM exposure was associated with the increased risk of malformations of the nervous system, urinary system, genitals, and limbs in areas exclusively using chloramine. An association between chloramine-related chlorination by-products and congenital malformations has not previously been highlighted and needs further attention.”

2709, 2021

Quantifying Nanoparticle Associated Ti, Ce, Au, and Pd Occurrence in 35 U.S. Surface Waters

September 27th, 2021|Categories: Drinking Water, Emerging Contaminants, Papers & Articles, Pathogens, Water Treatment|0 Comments

It provides baseline concentrations and sizes for typical occurrence of natural and anthropogenic (manufactured) nanoparticles (NPs) including gold, cerium, titanium, and palladium (Au, Ce, Ti, and Pd) in US drinking water sources.

309, 2021

Sensitivity of Bacteria, Protozoa, Viruses, and Other Microorganisms to Ultraviolet Radiation

September 3rd, 2021|Categories: Drinking Water, Emerging Contaminants, Papers & Articles, Pathogens, Water Treatment|0 Comments

An article published in the Journal of Research of the National Institute of Standards and Technology provides five tables of recommended fluences (dosages) for 1 to 5 log reduction of spores, bacteria, protozoa, viruses, and algae and other large microorganisms.

2408, 2021

Decay of infectious SARS-CoV-2 and surrogates in aquatic environments

August 24th, 2021|Categories: Drinking Water, Emerging Contaminants, Papers & Articles, Pathogens, Water Treatment|0 Comments

A recently published study found that persistence of viable SARS-CoV-2 was temperature dependent, remaining infectious for significantly longer periods of time in freshwater at 4°C than at 20°C. This is consistent with other viruses. The T90 for infectious SARS-CoV-2 in river water was 2.3 days and 3.8 days at 20°C and 4°C, respectively, but the viral RNA was much more stable (remained detectable for the 20 day duration of the experiment).

1907, 2021

The Prevalence and Levels of Enteric Viruses in Groundwater of Private wells in Rural Alberta, Canada

July 19th, 2021|Categories: Drinking Water, Emerging Contaminants, Papers & Articles, Pathogens, Water Treatment|0 Comments

a survey of the prevalence and levels of enteric viruses in untreated groundwater of 62 private wells used for drinking and/or agricultural practices in rural Alberta using the qPCR panel assay, integrated cell culture with qPCR, and cell culture, has been published in the journal Water Research.