The Pool Pros News

11th Egypt Pool & Water Technology Exhibition

Euro Pool News - Sun, 10/18/2015 - 17:00
aquatherm Egypt Pool exhibition will take place from 24 till 26 March 2016 at...
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RENOLIT ALKORPLAN wins the "2015 Pool" award

Euro Pool News - Tue, 10/13/2015 - 17:00
One of RENOLIT ALKORPLAN's public swimming pool renovation projects has...
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The Flussbad Plan in Berlin Reimagines a Canal for the People

Swimming Pools - Sun, 10/11/2015 - 23:00
A proposal to clean a canal around Museum Island and turn it into a swimming attraction is at the heart of a discussion in Berlin.
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Responding to Dengue Fever

healthy pools - Fri, 10/09/2015 - 09:08

The female Aedes aegypti mosquito is the “vector” that transmits dengue fever from person to person.Image reprinted from the US Centers for Disease Control and Prevention website.

In the wake of recent monsoons and flooding, mosquito-borne dengue fever is once again on the rise in the Asia Pacific Region.  According to the US Centers for Disease Control and Prevention (CDC), worldwide, dengue fever cases number over 50 million annually.  The World Health Organization (WHO) estimates1 that globally 2.5 billion people, over one-third of the world’s population, live in areas that put them at risk for the viral disease, and about 70 percent of them (1.8 billion) live in the Asia Pacific Region.

Dengue is rare in the continental US, but endemic in Puerto Rico, where the CDC maintains a center of expertise and a diagnostic laboratory in its San Juan Dengue Branch.  It is also endemic to the Caribbean, Mexico and Central America.  According to the Gates Foundation website, dengue fever incidence has increased 30-fold worldwide since the 1960s.  Increasing urbanization and global travel contribute to ongoing outbreaks globally.

Dengue Fever Symptoms

Dengue fever symptoms range from mild fever to incapacitating high fever, with severe headache, pain behind the eyes, muscle and joint pain and rash, according to the World Health Organization.  Symptoms appear 3 -14 days after the infective bite.   The CDC advises patients to go immediately to an emergency room or closest health care provider if any of the following warning symptoms appear:

  • Severe abdominal pain or persistent vomiting
  • Red spots or patches on the skin
  • Bleeding from nose or gums
  • Vomiting blood
  • Black, tarry stools (feces, excrement)
  • Drowsiness or irritability
  • Pale, cold, or clammy skin
  • Difficulty breathing

Dengue hemorrhagic fever is a severe, potentially lethal form of the disease that generally requires hospitalization.  Children usually have a much milder form of dengue fever than adults, but those who survive the disease have a much greater chance of dengue hemorrhagic fever if they are subsequently infected as adults with a different serotype of the virus.

Avoiding Mosquitoes to Avoid Dengue Fever

Dengue fever is spread by the bite of infected Aedes aegypti mosquitoes, which are endemic to the southeast sector of the US among other world regions.  Humans are the reservoir of the disease, and there are at least four dengue viruses.  A person bitten by an infected mosquito may or may not develop symptoms.  That person cannot transmit the illness directly to others, but if a mosquito bites that person after he/she becomes infected, that mosquito can spread dengue fever to others through ongoing biting. According to the CDC, the Aedes aegypti bites primarily during the day. This species is most active for approximately two hours after sunrise and several hours before sunset, but it can bite at night in well-lit areas.

There is neither a vaccine for dengue fever nor specific antiviral medicines to treat the illness.  Preventing dengue is a matter of avoiding mosquitoes and their bites. Strategies include:

  • Eliminate standing water in flower pots, buckets, barrels, old tires, untreated kiddie pools and other containers that can serve as breeding grounds for mosquitoes.
  • Ensure good drainage of water around homes.
  • Maintain a chlorine residual of about 1 mg/l in stored treated drinking water; drinking water storage is common in developing countries that lack central water distribution.
  • Make sure backyard pools are appropriately chlorinated as mosquitoes will not breed in chlorinated water.
  • Inspect and repair window and door screens.
  • Apply an insect repellent to exposed skin and/or clothing when spending time outdoors. Products containing DEET, picaridin, IR3535, and some products containing oil of lemon eucalyptus and para-menthane-diol may provide long-lasting protectionfollow label directions for use.2
  • Apply insect repellent to skin after applying sunscreen, if sunscreen is to be used.
  • When you are outdoors, air movement around your body (from fans or natural breezes) disrupts mosquito flight and reduces your risk of being bitten.

The Indian Government is Activated

The Indian Express reports the current Dengue Fever outbreak is the worst one in five years, and notes other diseases with similar symptoms are also on the rise, including typhoid and B. coli.  The newspaper reports government inspectors go house-to-house in New Delhi in search of standing water, for even a few milliliters of clear water can become the breeding grounds of mosquitoes. Steep fines are imposed on residents who harbor standing water.  Fumigation is practiced in some areas.  Children are advised to wear full-sleeved shirts.

Government doctors have been told they will be on the job with no leave until the outbreak subsides and the number of hospital beds has been increased.

A High-opportunity Target

As flooding in the Asia Pacific region subsides, dengue cases are expected to decline.  Nevertheless, the disease remains one of the “most widespread vector-borne viral infections in the world,” according to the WHO.3  The Gates Foundation calls dengue fever a “high-opportunity target” because several potential vaccines are in development. The foundation supports efforts to develop a dengue vaccine, which it estimates could prevent more than 500,000 hospitalizations and 3,000 deaths annually, most of these among children (see press release).

An effective vaccine against dengue fever is the response we would most like to see to this global scourge.

Click here to download this article.

For more information on dengue fever and the Aedes aegypti mosquito, please see this CDC resource.

Ralph Morris, MD, MPH, is a Physician and Preventive Medicine and Public Health official living in Bemidji, MN.

1See: World Health Organization, Regional Office for South-East Asia, Asia-Pacific Dengue Strategic Plan (2008-2015)

2For more information on insect repellents and their effectiveness, please see http://cfpub.epa.gov/oppref/insect/.

3WHO.  Dengue hemorrhagic fever:   Diagnosis, treatment, prevention and control. Geneva. World Health Organization, (1997): 12-23

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The Wrong Way to Talk About Guns

Swimming Pools - Wed, 10/07/2015 - 12:10
Ben Carson and Jeb Bush have had cold-hearted and distinctly unhelpful responses to the shooting at Umpqua Community College.
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HEXAGONE increases its team to over 60 in Europe!

Euro Pool News - Sun, 10/04/2015 - 17:00
YOANN CHOURAQUI has headed HEXAGONE MANUFACTURE since 2006.  The company...
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World first by Peraqua & Loxone Austria

Euro Pool News - Thu, 10/01/2015 - 17:00
PERAQUA and LOXONE AUSTRIA integrate the fully automated “Loxone Aquastar...
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Piscina & Wellness Barcelona show: Register free online

Euro Pool News - Thu, 10/01/2015 - 17:00
There is a few days to go before the show opens and the Pool and Wellness...
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Pentair training Tour Academy for 2015-2016

Euro Pool News - Wed, 09/30/2015 - 17:00
Pentair offers pool professionals to benefit from training workshops to learn...
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Aquanale and FSB 2015: Swimming pool areas continue to grow closer together

Euro Pool News - Wed, 09/30/2015 - 17:00
From 27 to 30 October 2015, the next edition of the trade fair duo aquanale...
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Interview with Eloi Planes, President of the Organizing Committee of Piscina & Wellness Barcelona 2015

Euro Pool News - Thu, 09/24/2015 - 17:00
Eloi Planes, President of the Organizing Committee of Piscina & Wellness...
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Wow Company & Polin Waterparks announce official strategic alliance

Euro Pool News - Mon, 09/21/2015 - 17:00
Developer and manufacturer of the Wave Ball, WOW Company and global market...
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How to Drain a Residential Swimming Pool

healthy pools - Fri, 09/18/2015 - 11:23

Summer’s nearly over and many backyard swimming pool owners will soon undertake their annual “pool draining ritual.” Draining the water helps prevent damage to pools in geographic areas subject to freeze-thaw cycles. This article provides information to help you drain your pool responsibly.


What’s the Big Deal?

It’s easy enough to fill your pool with water, so why is draining it a big deal? First, all summer your swimming pool water has been treated with chemicals to help keep it safe for you and your family. Chlorine-based sanitizers, for example, probably were used to help destroy waterborne pathogens that can cause diarrhea, swimmer’s ear and skin infections. These germs can enter the pool on the bodies of swimmers and in animal feces. Chlorinated pools also prevent your backyard pool from becoming a mosquito breeding ground; mosquitoes potentially spread diseases like West Nile virus. But the same low levels of chlorine-based sanitizer that help keep pool water safe for your swimmers can be harmful to fish and wildlife.
The second reason to stop and think before you pull the plug is to consider the sheer volume of water and where it will flow to or pond outside the pool. Will it flow onto your neighbor’s property? Will it pond in a depression? Are you planning to drain your pool directly into a sewer? Better find out what type of sewers are nearby. A storm sewer will channel your pool water directly into a natural stream or other body of water with no treatment. Only sanitary sewers channel wastewater flow to treatment facilities.



This storm sewer in Montgomery County, Maryland bears a sign that indicates water flowing into it drains into Rock Creek, a tributary of the Potomac River, and warns residents not to pollute.

Tips to the Drainers

  • Consult your local municipal Department of Environment Quality for specific guidelines or codes. The US Environmental Protect Agency (EPA) website highlights, for example, Montgomery County, Maryland’s Department of Environmental Protection guidelines.
  • According to an Oregon Department of Environmental Quality Fact Sheet, if possible, swimming pool water should be sent to a treatment plant via a sanitary sewer. This is most important for large (especially community) pools, and happens automatically when in-ground pools are built with a drain that goes to a sanitary sewer.
  • If drainage to a sanitary sewer is not possible, water may be allowed to evaporate to a lower level for the winter, if desired, or disposed of on the ground or used to irrigate your property. Water should be released, however, only after the pool owner stops adding chlorine or other treatment chemicals, or shuts off the chlorination system and holds the water in the pool for at least one week while chlorine levels drop.
  • When disposing of pool water on the property or using it to irrigate your property, do so in a manner that water will not flow off your property or into a stream or storm sewer.
  • When disposing of pool water on your property, do so in a manner that water will not pond for a prolonged period, resulting in nuisances such as odors and insect breeding conditions.
  • If discharge to the ground will result in flow to a stream ditch or storm sewer, increase the holding time of water in the pool with no added chlorination to at least two weeks to allow chlorine to dissipate.
  • Use a pool test kit to measure the chlorine level of the pool water prior to draining to ensure there is no detectable chlorine level (for example, the Washington, DC Department of Energy and Environment website indicates less than 0.1 mg/l free chlorine is acceptable). A longer holding period may be necessary if free chlorine levels are above 0.1 mg/l.


Happy Swimming Pool Winterizing!
Chris Wiant, M.P.H., Ph.D., is president and CEO of the Caring for Colorado Foundation. He is also chair of the Water Quality & Health Council.

Click here to download this article.

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Ricoh Arena facelift for 2016 Spatex

Euro Pool News - Thu, 09/17/2015 - 17:00
The Ricoh Arena in Coventry – home to the Spatex pool and spa trade show –...
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Barcelona and Cologne 2015 Special: the journals not to be missed... last days to communicate

Euro Pool News - Thu, 09/17/2015 - 17:00
EuroSpaPoolNews is launching the new editions of autumn : Le JUSTE LIEN ...
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AIS captures Australian innovation award

Euro Pool News - Thu, 09/17/2015 - 17:00
Queensland-based chlorine generator and water-disinfection specialist...
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Leisure Concepts launches new UK distribution centre

Euro Pool News - Thu, 09/17/2015 - 17:00
Leading US spa accessories company Leisure Concepts has opened a new...
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For New York’s Pools, It’s Not the Heat, It’s the Politics

Swimming Pools - Sat, 09/12/2015 - 23:00
Extending the public pool season — along with the already longer beach season — could be an imperative of democracy, given how few children come from wealthy families with weekend houses.
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Removing Stains in the Pool

royal swimming pools - Mon, 09/07/2015 - 14:00
It can be frustrating for pool owners to see unsightly stains in their swimming pool. After all, no one wants to jump into a dirty pool. Nonetheless, dealing with stains is just another part of pool maintenance. With the proper knowledge, tools, and chemicals, pool owners can remove just about any stain. Diagnose the Stain […]
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Fluidra acquires WaterLinx, South Africa's leading pool company

Euro Pool News - Wed, 09/02/2015 - 17:00
Fluidra, the top multinational group in pools and water treatment, will...
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