10 Steps to Maintaining a Clean Pool

from Guardian Pool Fence

If you're lucky enough to have a swimming pool and also lucky enough to have the sun to use it then keeping it clean is all important. You want a pool to be fresh and inviting for everyday use and so you can get the most from this refreshing pastime.

By taking a constant but thorough routine with pool maintenance you can cut down on the work in the long term and also save on a lot of money. It also means there's no need for last ditch attempts to sort something out when something goes wrong. So, here are ten tips to keep your pool sparkling clean and healthy.

• Maintain the pool by keeping an eye on the pool chemistry a few times a week in summer and around once a week in winter.
• Keep a close eye on the skimmer basket and clean it out weekly or even more-so if it needs such care.
• Keep an eye on the hair and lint filter. This will need to be emptied every few weeks and you should ensure that a build-up doesn't occur.
• Water levels are also something that need inspection and should be adjusted if needed. Ideally they should be at the center of the tile.
• The in-line chlorinator needs a weekly check-up and if it needs adjustment then you should do so. Check the chlorine readings and ensure they are in the unit to ensure adequate levels of chlorine.
• Clean the filters. These should be cleaned after a storm or every couple of months. The best way to remember this is to base it around something you do a couple of times a year. If you've extra elements this can be a lot easier to do, if not you will need to use chemicals to clean the filters. Make sure to use eye and glove protection when doing so and make sure the filters are rinsed well.
• The tile area on the outside of the pool should be cleaned on a weekly basis when the pool is in use or less so when it's not. This can be done by using pressure washing services and will help keep your pool spic and span from build-up.
• Always keep the chemicals you use stored in the dark and away from direct sunlight as this can cause issues with them.
• If you do not have an ozone system your pool won't need to be shocked. However, if you do need to shock it does it at night. People swimming soon afterwards should use a non-chlorine shock to clean the pool. Alternatively, it's possible to do so by running your pump for a full day and night with your ozone system. Just ensure you're on 24 hour circulation.
• Cracks can turn into bigger problems. These should be dealt with through silicone and as we all know prevention is better than cure.
• Keep vegetation and animals, as well as fertilizers away from the area as they will feed algae in the pool.

These tips should help you keep your pool clean and perfectly usable.

***

Jacob Ryan is a lover of swimming and the great outdoors and also enjoys fishing.

Xenobiotic Danger in Recreational Water

By Robert Lowry, Aqua Magazine 

What in the world is a "xenobiotic," and why should I be worried about it?

No, it isn't some new kind of disease, bacteria, parasite or organism. It is a term that is used as a catch-all for a number of things. Xeno is Greek for "foreign" and "biotic" is from "bios," which means "life," but also means "biologically active."

Common xenobiotics we encounter daily include household products such as window, countertop and floor cleaners; dishwashing and laundry compounds; and heavy-duty potent chemicals such as degreasers, drain cleaners and oven cleaners. They also include pharmaceutically-active compounds and endocrine-disrupting chemicals. Drugs, both legal and illegal, are also considered to be xenobiotics also.

There are many concerns when it comes to providing high-quality drinking water: scarce water sources, droughts, expanding population and well closings. You can add xenobiotics to the list as well. As xenobiotics go down the drain and through the sewer system, septic tanks do not destroy these chemical wastes, resulting in local pollution.

While drinking water quality has gotten better over the past few decades, the lack of fresh, uncontaminated source water has caused municipalities to consider and implement water-recycling practices. It may be easier to remove the contaminants from household wastewater and recycle it rather than removing contaminants from industrial or agricultural polluted source or ground water. However, recycling water poses another question in terms of the xenobiotics present in water and how they may build over time, an idea which plays a large role in the world of recreational water.

Take perchlorate, for example. An example of both a xenobiotic and an endocrine disruptor, perchlorate is the primary ingredient of solid rocket propellant and in munitions beginning since the 1950s. Perchlorate is also used in the production of explosives and fireworks — it adds the blue color to firework displays.

For disposal, perchlorate is often dissolved in water and poured on the ground. It breaks down very slowly in the environment, but it moves quickly through underground and surface water. Wastes from the manufacture and improper disposal of chemicals that contain perchlorate are increasingly discovered in soil and water. Traces of perchlorate have been found in groundwater in virtually every state in the U.S. It has been detected in many rivers and low levels have been found in some lettuce samples and milk.

How does it affect the body? First, perchlorate interferes with iodide uptake into the thyroid gland. Because iodide is an essential component of thyroid hormones, perchlorate disrupts the function of the thyroid. The thyroid helps to regulate metabolism. In children, the thyroid also plays a major role in proper development. Impairment of thyroid function in expectant mothers may impact the fetus and newborn and result in effects including changes in behavior, delayed development and decreased learning capability. Changes in thyroid hormone levels may also result in thyroid gland tumors.

Although the range of health effects for these xenobiotics is broad, all of these compounds are foreign to the living organism in which the health effect is observed, making them xenobiotic.

Prescription medications are formulated to be highly soluble and not readily degradable in the human digestive system. These properties make them persistent in water and not readily degraded by sunlight. Pharmaceutical residuals appear in urine and sweat as a product of their use and subsequent excretion. Other prescription preparations such as topical ointments and lotions for dermal conditions are easily shed into the water upon immersion.

More importantly, these medications appear in sewage in water. When scientists recently tested sewage in Australia for the top 50 different prescription medications, all 50 drugs were present. And after testing streams in 30 states, a study published by the U.S. Geological Survey in March 2002 found trace amounts of everyday products such as soap and prescription drugs in 80 percent of the water sources sampled. Streams showed 95 different chemicals from antibiotics to fragrances.

The bottom line: If municipalities are going to recycle sewage and mix it with source water to meet demands, they have to consider the monitoring and treatment of xenobiotics as well.

The ultimate recycling of water is a commercial recreational water facility (a public swimming pool, spa or hot tub). The water is sometimes used for years before draining or significant dilution.

A study done by J. Alan Beech in 1981 found the amount of pollution per person who enters a pool is 200 mL (milliliters) of sweat and 50 mL of urine. No reliable studies have been done on which to base the amount of urine voided in the water by swimmers. Warren and Ridgeway from Water Research Laboratory, Marlow, England estimated it to be 25-50 mL per swimmer in 1978. Beech estimated it to be much higher for children under 10 years of age. He adopted a value of 50 mL per swimmer.

Kuno from C. C. Thomas in Springfield, IL, reported that an active swimmer in water at 24° C (75°F), when the air temperature was 38° C (100° F) lost approximately 1 liter (1.06 quart) of sweat per hour. For his calculation he assumed 10 percent of the volume or 100 mL/hr. The average time spent in the pool is two hours. The EPA estimates that child swimmers aged 5-9 years spend three hours in pools at a time, teenagers spend six hours and adults one hour. Beech used an average of two hours which produced 200 mL of sweat.

We know drugs appear in sewage. Therefore, it is not a quantum leap to understand that drugs, household cleaners and personal care preparations are present in recreational water.

Of primary concern is the potential for adverse health effects. Drug residual concentrations reported in sewage to date are an order of magnitude (two or more times) below those at which an effective therapeutic dose would result from ingesting the water. [That is in sewage, not in recycled, recreational water that may be years old. The concentrations will be much higher in old recreational water.]

Multiple drugs in the water raises the possibility of drug interactions that may cause health effects not otherwise observed.

Then there is the idea of continuous, multiple or repeated exposure to low levels of these drugs — swimming every day in a drug soup may have untold consequences. It could take one or many exposures over months or years for any symptoms or adverse health effects to appear. This could make finding xenobiotics in recreational water as the culprit nearly impossible. Doctors may not even be able to diagnose the problem, much less the cause.

Imagine if you will, what might be in swimming pool, spa, hot tub, whirlpool, waterslide, waterpark, lazy river or other recreational water. How much and what might be in the water of a recreational facility that has a daily bather load of 9,000 people and has used the same water for 100 days? What about the spa that has 25 people in it all day long and the water is a month old?

If you swallow some pool water, are you ingesting some or all of the commonly prescribed drugs? It is estimated that 25 to 30 percent of all people over the age of 18 years have tried illegal drugs; you may be ingesting some pot, cocaine, heroin, methadone, crack or other drugs. You could be getting extra hormones, amino acids, vitamins or minerals. You could even be getting some extra caffeine or nicotine.

Xenobiotic material has been in the water since the very first pool was ever built. We have just recently been able to analyze it, and we are just now talking about it. And unfortunately, there are no easy tests for xenobiotics or drugs, as they are insignificant on a total dissolved solids test.

We also do not know what any common water sanitizers will do to xenobiotics. They may destroy them. They may do nothing to them. They may chlorinate them, brominate them or oxidize them to unknown byproducts that may be harmful or harmless.

At present for recreational water, the only defense we have against xenobiotics is draining. One draining method used in England and Europe is to drain 30 liters (about 8 gallons) of water per bather per day. This may also reduce the need to superchlorinate.

One recommendation is to use water from an approved potable municipal water treatment facility. This water must meet the requirements of the Safe Drinking Water Act. Some 100+ known contaminants are below the level determined safe and it has been tested. Do not use ground water, well water or surface water in a recreational water facility unless the water has been tested by the local health authority and approved for drinking. There is no way of knowing what is in that water without extensive and expensive testing.

As I mentioned earlier, xenobiotics is a hot topic in drinking water right now, meaning it'll naturally trickle down to the pool industry. It won't be long before recreational water comes under scrutiny — will you be ready when your customers start asking about it?

Understanding Water Balance

from Poolgear.com

H2Oh! - Understanding the chemical composition of a healthy swimming pool

Just imagine – your drinking water may not be good enough to swim in. After all, tap water often has high levels of minerals and low pH – two factors that can harm your pool and prevent chemical treatments from doing their job. The two most important things to remember about the health of your pool are that it must be sanitized and it must be balanced. The best way to sanitize your pool is with chlorine. Keeping your pool balanced, means keeping the five basic pool water components (pH, total alkalinity, calcium hardness, total dissolved solids and stabilizer) within their proper ranges, helps your sanitizer work more effectively. That's why we say to achieve a healthy pool, sanitizing and balancing are equally important.

Total Alkalinity

In simple terms, total alkalinity refers to how much alkaline is in the water. But you can't fully know the importance of total alkalinity without referring to pH, because the two go hand-in-hand. High alkaline water leads to high pH. Low alkaline water leads to low pH. For now, just remember that the average swimming pool should have an alkalinity reading of 100 ppm.

Swimming Pool Water pH Levels

Keeping your pH levels within the proper range is not only important for swimmer comfort, it's also important for keeping your equipment and pool finish in good condition. pH refers to the acidity or baseness of your pool water. All you need to remember is that a proper pH level is around 7.4 to 7.6 on a pH test kit's numeric scale. 0 to 7 reflects a low or acidic pH. 8 to 14 means the pool has a base pH level. Low pH readings mean your chlorine will dissipate a lot quicker. High pH levels make chlorine inactive. And that means the money you're spending on chlorine is a waste.

Calcium Hardness

Anyone who's ever washed their hair in hard water knows that hard water doesn't do much for getting up a good lather. But in your pool, just the right amount of calcium is essential. Too little and your plaster can erode. Too much and your water could become cloudy, scale could form and stains might start. 200 to 400 ppm is the general range for calcium hardness, while 300 ppm is ideal for the average pool.

Stabilizer

Stabilizer is to chlorine like your home's insulation is to keeping in hot or cold air – it helps retain your chlorine longer just as insulation helps retain heat or air conditioning. Stabilizer is even added to some chlorine compounds to protect them from the breakdown effects of sunlight. When your stabilizer level is low, you'll use a lot more chlorine. When it's high, you may need to dilute your pool water to bring it back into the 40 to 100 ppm ideal range.

Total Dissolved Solids (TDS)

Like calcium, there are many other dissolved elements in pool water. Unless it's distilled, all water contains dissolved minerals. As pool water evaporates, minerals remain behind and become concentrated. The more concentrated these minerals become, the harder it is for chemical additives to work and stains can form. If you have 3000 ppm or more of total dissolved solids or TDS, you may need to drain some water and add fresh water.

View the full size Understanding Water Balance portion of our "Pool Care Tips" manual.

Check out this great article about Ozone and Ozonators by Kaisa Williams, Swimuniversity.com:

Ozone is a strong natural oxidizer which breaks down chemicals and bodily fluids, including:

soap

deodorant

hair spray

cologne

makeup

perfume

body lotion

hand cream

sun tan lotion

saliva and urine

When used in conjunction with your regular sanitizer, ozone helps kill pathogenic bacteria, germs, and viruses, as well as oxidizing organic contaminants. This leads to dramatically better water quality than you would have with just chlorine or bromine alone.

The Chlorine Myth / What creates that chlorine smell

To some people chlorine is the devil, its the worst. Maybe they saw an episode of 20/20 that said "Chlorine, The Silent Cleanser." Well it's not as bad as you may think, in fact its the best thing for you and we are here to clear all charges against chlorine.

Myth: Chlorine Burns Your Eyes When You Open them Underwater

Fact: Low pH burns your eyes when you open them underwater. A pool that has low pH means that the water is acidic. When water is acidic, its like putting your tongue on a battery (though not as harsh) but if you expose your eyes to it then yes, it's gonna burn. You could have a chlorine reading of 10 ppm (Parts Per Million) and as long as your pH is ok, then your eyes will be ok.

Myth: Chlorine can do long term damage on my filter system

Fact: No it can't, but low pH can corrode metal and high pH can leave a hard deposit. We can simply say that most problems that are associated with chlorine are really the fault of chlorine. The only thing bad about chlorine is that you can't eat it, or can you?

Pool Treatment 101: Introduction To Chlorine Sanitizing

Mastering the knack of maintaining a healthy pool is not difficult with the right information and a little diligence. The proper use of chlorine is a key step to keep your pool healthy.

For general pool treatment, chlorine has three essential characteristics:

1. It acts as a rapid and persistent sanitizer,

2. It is an effective algaecide, and

3. It is a strong oxidizer of undesired contaminants.

click here for swimming pools 101

New Code Proposes CYA Restriction

According to the latest working draft of the Model Aquatic Health Code, there's no reason for indoor pools to use cyanuric acid, even in products such as dichlor and trichlor.

Though the code is currently a work in progress and thus open to comments and revisions, some in the industry are concerned about the implications of such a restriction.

click here to read more about CYA

Feed Needs

Liquid chemical feeders can simplify pool maintenance — but an awareness of their workings is crucial for effective use.

For much of the pool industry's history, chemicals have been added to the water in two basic ways: By pouring solutions into the pool, or by placing tablets in a feeder of some sort. These techniques are both simple and time-tested, but they're not always ideal — especially for pools with high bather loads, or those that require rapid chemical adjustments.

click here to read more about liquid feeders

Preventing Saltwater Problems

Many salt-related issues can be avoided through proper knowledge of the causes and an effective maintenance regimen.

Scale, stains and cloudy water are the most common challenges with saltwater pools — but only if they are not maintained correctly.

Proper maintenance goes a long way toward avoiding common problems in these pools. Watching for early signs can also help you prevent potential issues from escalating into obvious problems.

click here to read more about salt

Pool Treatment 101: Introduction To Chlorine Sanitizing

Mastering the knack of maintaining a healthy pool is not difficult with the right information and a little diligence. The proper use of chlorine is a key step to keep your pool healthy.

click here for Healthy Pools primer