17
May
2019
Treatment

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


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 »

26
Sep
2018
Treatment
by Water Quality & Health Council

Celebrating Dr. John L. Leal and 110 Years of U.S. Drinking Water Chlorination

Most Americans are just a twist of the tap away from safe, cheap (pennies per treated gallon), and abundant drinking water. But this remarkable public health and engineering triumph—made possible by drinking water treatment—did not appear overnight! It can, however, be traced to a pivotal day in U.S. public health history in Jersey City, New... Read More »

31
Aug
2018
Treatment
by Joan B. Rose, PhD

World Water Week 2018: Water, Ecosystems, and Human Development

Established in 1991 and administered each year by the Stockholm International Water Institute (SIWI), World Water Week provides a unique forum for confronting water-related challenges and their global impact on public health and the environment. It focuses on innovative thinking and positive action from scientists, decision-makers, business innovators, and especially young professionals from diverse sectors... Read More »

10
Aug
2018
Treatment
by Water Quality & Health Council

Harmful Algal Blooms: Cyanobacteria and Safe Drinking Water

This summer, you may have read about the growing problem of harmful algal blooms (HABs1) due to cyanobacteria in lakes, rivers, and other freshwater bodies across the United States and worldwide. In 2014, we wrote about the 500,000 residents in and around Toledo, Ohio, who were alerted that their tap water had been declared undrinkable.... Read More »