Monday, January 6th, 2020

Is E. coli losing its reliability as a Fecal Indicator Bacteria?

By Saumya Garg The past 50 years have seen vast changes in the way water has been recycled into our streams, creeks, rivers, estuaries, oceans and lakes. Wastewater treatment has been an essential requirement to maintain the safety and health of not only the environment, but also of the human population. As a result, every 


Monday, December 16th, 2019

Legionella in building water systems (Part 2: Prevention and Control)

By Saumya Garg (Part 1 of this blog discussed Legionella outbreaks and the regulatory environment around the bacteria. In Part 2, we will look at some of the control and prevention tactics utilized by building water management personnel.) To avoid Legionella contamination, the four primary objectives of any building water management personnel are to: Maintain 


Tuesday, December 3rd, 2019

Legionella in building water systems (Part 1: Overview and Regulation)

By Saumya Garg The past few weeks have seen a sudden surge in cases reporting the presence of Legionella bacteria in a variety of water sources, from hot tubs to cooling towers, spread across the country. The cooling towers at the McGuire Veterans Affairs Medical Center in South Richmond, VA tested positive for Legionella bacteria. 


Tuesday, October 29th, 2019

Chloramines: The hidden cost associated with owning a chlorinated pool

By Saumya Garg All of us are familiar with the “chlorine” smell of a swimming pool. In reality, it is not the chlorine but the chloramine that we smell in the pool air. When free chlorine from the pool water combines with ammonia present in the sweat and other bodily fluids of swimmers, chloramines are 


Wednesday, June 19th, 2019

Operating temperature effects on UV treatment of sucrose (and other sugar syrups)

By Brian Grochowski One of the most common but misunderstood applications for UV disinfection is for treating sugar syrups such as liquid sucrose. Sucrose is quite common in the beverage industry for use in flavored waters, carbonated beverages, teas, etc. While beverages made with sucrose syrups have some perceived consumer benefits compared to HFCS syrups, 


Monday, February 18th, 2019

Can automation in an aquatic facility be counterproductive?

By: Dr. John Psaroudis Within an aquatic facility, a UV disinfection system is traditionally installed as a stand-alone device. Its presence usually goes unnoticed as it treats countless gallons of water every day, ensuring chloramines are destroyed and water borne pathogens are inactivated. It also pays little attention to the other equipment surrounding it, that 


Tuesday, February 5th, 2019

Déjà vu all over again – Romaine lettuce contaminated with E. coli from irrigation water

By: Brian Grochowski Back in June 2018, 210 people were infected with E. coli O157:H7 and 96 people were hospitalized, and five people died having consumed contaminated romaine lettuce. The source of contamination was found to be the canal water used to irrigate the lettuce. Fewer than six months after that outbreak, a similar event 


Tuesday, February 5th, 2019

Aquionics UV solution reduces energy and maintenance costs at City of Silverton wastewater treatment plant

UV disinfection technology treats one million gallons of wastewater per day for reuse in award-winning botanical garden irrigation project Ultraviolet (UV) disinfection systems from Aquionics are producing significant energy and maintenance savings for a wastewater treatment plant in the City of Silverton, Oregon. The facility collects all the residential, commercial and industrial wastewater produced by 


Tuesday, February 5th, 2019

Valcour Process Technologies to provide Aquionics UV technology to Cheese Producers

Aquionics has entered into a partnership agreement with Valcour Process Technologies for the distribution of its ultraviolet (UV) disinfection systems to cheese producers in the upper Midwest. The agreement enables Valcour to offer Aquionics UVEO and UVEO H products for pasteurized equivalent water applications across Minnesota, Iowa, South Dakota and Wisconsin, where there is a 


Wednesday, December 5th, 2018

Summer is over. What now for my UV system?

By: John Psaroudis Many operators of aquatics facilities are asking that question. With the summer over, what must I do to prepare my outdoor UV system for the winter months or indeed, what is required should my UV system be shut down for an extended period of time? There are several basic steps that should