Water Treatment

Toxic Cyanobacteria in Water: A Guide to Their Public Health Consequences, Monitoring and Management

Briefly, it presents the current state of knowledge on cyanobacteria and cyanotoxins, and from a drinking water treatment perspective it provides guidance for monitoring and controlling risks in source water and at intakes.

Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Aluminum

There are changes from the 1998 guideline, which it replaces, and from the August 30 2019 proposed values when it was posted for comment. The new “maximum acceptable concentration (MAC) for total aluminum in drinking water is 2.9 mg/L (2,900 µg/L) based on a locational running annual average of a minimum of quarterly samples taken in the distribution system.

Potable water volumes and population served from Canadian drinking water plants, by treatment category

It is a Statistics Canada searchable database that lists drinking water plants by treatment category, characteristics of water treatment plants, population served, operation and maintenance costs (split into categories), and total potable water volume (split into surface water and groundwater) for the years 2011, 2013, 2015, and 2017.

By |2021-03-25T11:47:00-04:00February 23rd, 2021|Drinking Water, Papers & Articles, Water Treatment|0 Comments

CDC Releases First National Summary of Harmful Algal Bloom and Illness Surveillance

A new CDC report shows that from 2016–2018, 18 states reported 421 harmful algal blooms, 389 human illnesses, and at least 413 animal illnesses linked to harmful algal blooms.

By |2021-03-25T13:13:12-04:00February 19th, 2021|Drinking Water, Papers & Articles, Water Treatment|0 Comments

Challenges of Detecting Lead in Drinking Water Using at-Home Test

Lead in drinking water remains a significant human health risk. At-home lead in water test kits could provide consumers with a convenient and affordable option to evaluate this risk, but their accuracy and reliability is uncertain. This study examined the ability of at-home lead test kits to detect varying concentrations of dissolved and particulate lead in drinking water.

By |2021-03-25T13:31:25-04:00January 17th, 2021|Drinking Water, Papers & Articles, Water Treatment|0 Comments

Estimate of burden and direct healthcare cost of infectious waterborne disease in the United States

There is a huge amount of occurrence, hospital visit, and cost data in this report. It is the most comprehensive paper I have seen on this topic and worth a detailed read. It is available free of charge.

By |2020-12-17T09:52:33-05:00December 17th, 2020|Drinking Water, Papers & Articles, Water Treatment|0 Comments

Probable Evidence of Fecal Aerosol Transmission of SARS-CoV-2 in a High-Rise Building

A recently published peer reviewed paper in the journal ‘Annals of Internal Medicine’ reports that “on the basis of circumstantial evidence, fecal aerosol transmission may have caused the community outbreak of COVID-19 in this high-rise building.” Fecal aerosolization and droplet production are nothing new when it comes to our understanding of pathogen risks, with some early papers having been published nearly 50 years ago.

By |2020-12-17T11:40:18-05:00November 26th, 2020|Drinking Water, Papers & Articles, Water Treatment|0 Comments

Oral Microcystin‑LR Does Not Cause Hepatotoxicity in Pigs: Is the Risk of Microcystin‑LR Overestimated?

A key and somewhat unexpected outcome was that “no evidence of hepatotoxicity was found. These results shed more light onto the effects (or lack of effects) of low-dose oral microcystin-LR exposure. The data suggest that the risk of oral microcystin-LR exposure may be overestimated.” Hepatotoxicity is an important consideration for regulation.

By |2020-12-17T15:04:15-05:00November 16th, 2020|Drinking Water, Papers & Articles, Water Treatment|0 Comments

Dissolved Microcystin Release Coincident with Lysis of a Bloom Dominated by Microcystis caused by a Novel Cyanophage (virus)

The study reports that “viral attack on cHABs may contribute to changes in community composition during blooms, as well as bloom decline, yet loss of bloom biomass does not eliminate the threat of cHAB toxicity. Rather, it may increase risks to the public by delivering a pool of dissolved toxin directly into water treatment utilities when the dominating Microcystis spp. are capable of producing microcystins.

By |2020-10-30T10:32:08-04:00October 29th, 2020|Drinking Water, Papers & Articles, Water Treatment|0 Comments

Population-Wide Exposure to Per- and Polyfluoroalkyl Substances from Drinking Water

an interesting ‘perspective’ on lead in drinking water appeared in today’s Proceedings of the National Academy of Sciences (PNAS). It appears to be freely accessible. It starts with “How Flint Happened, How it Happens Today, and How to Stop it Tomorrow” and ends with a “Call for Renewed Commitment to Lead Corrosion Science and Engineering.

By |2020-10-27T16:13:24-04:00October 20th, 2020|Drinking Water, Papers & Articles, Water Treatment|0 Comments