15
Nov
2019
Treatment

How to Disinfect Water Storage Tanks Using Chlorine Bleach


11
Oct
2019
Treatment
by Bruce K. Bernard, PhD

Water Quality Testing and Treatment Systems for Pharmaceuticals

Nearly half of all Americans take one or more prescription drugs, with the percentage soaring to 85 percent for persons aged 60 and above (myself included). Water is the most widely used substance in the production, formulation, and packing of myriad pharmaceuticals, which are compounds manufactured for use as medicinal drugs. Given the public health importance and global footprint of pharmaceuticals, including antibiotics, there are extensive testing and safety requirements to control the quality of water used throughout the manufacturing processes. This article explains how water impacts the medicines you take, and what lengths are taken to keep them safe.... Read More »

04
Oct
2019
Treatment
by Chris Wiant, MPH, PhD

Addressing Water Scarcity: Future Plans for U.S. Water Reuse

Although snow-capped mountains are visible from much of Denver where I live, Colorado is one of 40 states that anticipate water scarcity challenges in the next decade. The Water Quality & Health Council has written dozens of articles on drinking water quality and the public health imperatives of safe treatment, disinfection, storage, and distribution. Yet water quality goes hand in hand with water availability, use, conservation, and increasingly—water reuse. A newly launched report and national effort led by the U.S. Environmental Protection Agency (EPA), the Draft National Water Reuse Action Plan, is making the news. The plan succinctly puts these needs and connections into perspective: “Safe and reliable water supplies for human consumption, agriculture, business, industry, recreation, and healthy ecosystems are critical to our nation’s communities and economy.” Water scarcity challenges are also global; two of the United Nations’ Sustainable Development Goals emphasize water reuse.... Read More »

17
May
2019
Treatment
by Chris Wiant, MPH, PhD

Drinking Water Safety in the United States: Coast to Coast and Source to Tap

Over the years, the Water Quality & Health Council has written extensively about how most Americans enjoy virtually unlimited, year-round access to safe, treated, and inexpensive drinking water for pennies per gallon. This article highlights how this cornerstone of U.S. public health protection is made possible across our large nation with widely varying climates, landscapes,... Read More »

08
Mar
2019
Treatment
by Chris Wiant, MPH, PhD

The Future of U.S. Desalination for Safe Drinking Water

Safe drinking water is an essential human need. But the vast majority of the world’s water (e.g., seawater) is high in salinity (briny) and dissolved solids, and is unsuitable for drinking and most domestic uses. (Making it potable cannot be accomplished without extensive and costly treatment compared to conventional treatment of traditional freshwater supplies.) According to the United Nations, water scarcity already affects every continent, especially in (semi)arid and rapidly growing coastal areas. And it’s not just California: Freshwater scarcity is already or expected to be a statewide or regional problem in many inland states like Nevada, Montana, and my home state of Colorado.... Read More »

14
Dec
2018
Treatment
by Stephen A. Hubbs, PE

Community Drinking Water Treatment Using Calcium Hypochlorite

Conventional water treatment transforms raw water into finished drinking water that is biologically and chemically safe. We recently celebrated the 110th anniversary of U.S. drinking water chlorination, a disinfection technology that debuted in Jersey City in 1908 using a dry compound called “chloride of lime.” Today we more properly call it calcium hypochlorite. Calcium hypochlorite... Read More »

26
Oct
2018
Treatment
by Bob G. Vincent

After the Hurricanes: Managing and Disinfecting a Flooded Well

In early September, Hurricane Florence became the first major hurricane of the Atlantic hurricane season and wettest tropical cyclone recorded in the Carolinas. Just over a month later, Hurricane Michael hit the Florida Panhandle, dumping significant rainfall before doing the same in southern Georgia and in many of the Carolina counties already reeling from Florence.... Read More »

12
Oct
2018
Treatment
by Chris Wiant, MPH, PhD, and Bruce K. Bernard, PhD

The State of Lead Testing in School Drinking Water

Although lead has been banned in U.S. drinking water infrastructure since 1986, it is still present in older lead-soldered copper and cast iron lines serving schools and other buildings. Lead can also be present in some indoor plumbing, solder, and fixtures at older schools, including high-lead brass faucets and in some drinking water fountains. Since... Read More »