What Makes Pool Water Green And Cloudy? [Expert Review!]

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A pool is a great addition to any home, providing both relaxation and fresh air. It is also a wonderful way to spend time with your family and friends. However, not all pool water is created equal; there are different qualities and types of pool water. Knowing the difference can help you properly maintain your pool so it provides the best possible experience for you and your family.

Clear Water

Clear water is perhaps the most common type of pool water and is what you would typically find in a swimming pool. Clear water pools are usually constructed with either concrete or fiberglass and have no added chemicals. They also tend to be a little warmer than other types of water due to the lack of dissolved solids and plant debris in the water. Because there is nothing clouding the water, it is extremely easy to see how clear water pools can look so fresh and clean. This makes them an excellent choice for families with children who like to spend time outdoors, especially in the summertime.

On the opposite end of the spectrum, we have murky water. Murky water is basically just the opposite of clear water; instead of being clean, the pool water looks and feels impossibly dirty. Its lack of clarity is caused by sediment, algae, and other impurities which cloud the water. These types of pools are usually found in larger cities and are a testament to the often poor water quality there. The color of the water can vary, but it will always be a murky brown or reddish-brown hue. The best way to tell the difference is by sight; if you can’t tell what is in the water without getting close to it, then it is probably a better option to drain and refill the pool than to simply clean it.

Chlorinated Water

Another important factor to consider when choosing a pool is the type of chemicals used to clean it. Chlorinated swimming pools are relatively easy to maintain due to the low solubility of chlorine in water. This means the chemical will stay in the pool for longer and be more effective at keeping the water clean. They are also less expensive to buy and install than unfiltered pools. The trade-off is that chlorinated pools can cause corrosion to metal equipment and pipes, as well as potentially damage your health by leaching into the water supply. The final decision should come down to what you prefer; cost or safety; in most cases, safety should win out.


A pool with good, clean water is a joy to use and a testament to the quality of the equipment and material used to build it. However, that doesn’t mean it is impossible for the water to become cloudy or dirty again once you introduce it to some dirt or debris. This is where filtering comes in; by installing a pool filter, you can ensure that even the tiniest particles are removed from the water as it passes through. Because of this, many pool filters are made of durable materials like plastic which can be easily cleaned and maintained.

If you have kids or animals around the vicinity of the pool, then it’s important to keep them safe from getting too close to the water too quickly. This is why many pools have any number of warnings and cautions about how unsafe they can be for infants and young children. The problem is that they often don’t heed these warnings and simply assume they know how to swim safely. While it’s great that they are being careful, this can also mean they are exposed to the water in question more often than necessary. This is why it’s important to monitor how often they are around the pool and whether or not they are supervised when near or in the water.

Salt Water

Wherever there is water, there is usually salt dissolved in it. In the sea, this is often hidden, particularly below the surface. However, when dragged ashore by the waves, the salt is more easily noticed. The same is true for swimming pools. Saltwater pools are typically found in salty regions where rainwater is stored underground and then slowly released into the pool. As the rain washes down, it dissolves the salt which has been deposited on the ground, causing it to become evermore prevalent in the pool. Like other types of water, saltwater pools are better than the beach because there is more oxygen in the water. The trade-off is that saltwater pools require more attention than regular pools. This is because they need to be monitored and cared for more closely due to the high concentration of dissolved salt in the water. If you want a pool that requires little to no attention, then opt for a freshwater pool instead.

Dissolved Gas

Another thing which can cause the water in your pool to become cloudy or foul-smelling is gas which is dissolved in the water. For this reason, all pools should be constructed at least a couple of feet above the ground. The reason behind this is that gas which is dissolved in the water will collect at the surface and then be released when the pool is disturbed or moved. Since gas is neither good nor bad, it’s color will vary depending on the specific substances which are dissolved in it. For instance, chlorine tends to make the water greenish while sulfurous compounds can give it a rotten-egg odor. Testing for these types of compounds is usually simple because they have a distinctive smell which should be readily apparent to the naked eye.

The bottom line is that every type of pool water has its pluses and minuses. You need to decide what is more important to you; cost, quality, or safety. If you have a preference for one over the others, then look for a pool which more closely matches your criteria.

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