You may be surprised to learn that most of your water filters actually use sand to purify your water.
It’s a special type of sand known as silica sand. Due to its excellent filtration abilities, it has grown in popularity amongst many industries and modern filtration systems.
But choosing the right type of silica sand is very important to ensure you get the best results from your purification process.
Confused about how you can make the right choice? Don’t worry! Just follow the guide below as I help you understand which type best suits your needs.
We will also discuss the common types of Silica Sands and their typical uses.
Ready to begin? Let’s start exploring!
Why Use Silica Sand For Water Filtration?
It might seem strange to use sand for filtering water. But in reality, silica sand is one of the best tools to clean your water. With the right type, it can act as a super-fine net and help you remove impurities from any liquid.
This works because silica sand has tiny spaces between its grains that can easily stop impurities from flowing through. It is so effective in its filtration that most modern systems already use silica sand as a filtration layer.
Just make sure that you use the right type for your needs.
What Makes Silica Sand Special?
Theoretically, most sands do share similar properties to Silica Sand. So why not just use some other type of sand?
It’s because not all sand types are as strong and durable as Silica. This is mainly due to silica sand being made up of quartz as its primary ingredient.
Quartz is one of the hardest minerals on Earth, making silica sand extremely durable and effective. It is also non-reactive, protecting it against pool chemicals or other treatments.
Silica sand is thus a strong filtration device that is consistent and effortlessly reliable.
Most Common Types of Silica Sand
Silica sand comes in different sizes or “grades”. These determine the size of its sand grains, which in turn determines the types of impurities it can filter out. The smaller the grain, the stronger the filtration.
If you want to compare filtration grades with other industrial varieties, this overview of the types of silica sand is a useful reference point.
Here is a table showing the most common types of Silica Sand:
| Sand Type | Grain Size (appx.) | Best For | What It Does |
| #20 Grade Sand | 0.45 – 0.85 mm | Swimming Pools | Clears out fine dirt and oils. |
| #16 Grade Sand | 0.8 – 1.2 mm | City Water Plants | Used in big, fast filters for public water. |
| Filter Sand | 0.25 – 1.8 mm | Ponds & Drainage | A general-use sand for less precise jobs. |
| Fine Sand | < 0.45 mm | Drinking Water Filters | Used in slow filters to remove bacteria. |
Within these different types of silica sand, #20 Grade Sand is the most popular choice. It is used to filter most home swimming pools you see today.
In comparison, #16 Grade Sand is mainly used for larger filtration systems. With larger grains, more water can flow through the filter.
How To Pick the Right Silica Sand for Water Filtration?
Choosing the right sand type largely depends on what you are planning to filter. The most common use cases include:
- Swimming Pools: Use #20 Grade to get a consistent filtration of your pool water that can also withstand your pool chemicals.
- Large-Scale Filtration: In cities and factories, multiple layers of different filtration materials are typically used. This includes the #16 Grade Sand to clean massive amounts of water easily.
- For Water Filtration: Your water purifiers mostly use Filter Sand for slow but effective filtration.
Make sure that you check the label before buying your silica sand. Good quality silica sand manufacturers usually wash and sort their product to the right grade.
Why Buying from the Right Silica Sand Supplier Matters?
It is very important to choose the right silica sand supplier with verified experience in the industry. Failing to make an informed decision can lead to problems like:
- Inconsistent sizes that block your water flow.
- Impure silica sand that clouds your water.
- Weak sand that turns into mud and makes your water impure.
To prevent these issues, you need a silica sand manufacturer that you can trust with your requirements for silica sand uses in the industry. I recommend partnering up with The Sharad Group.
For over 60 Years, The Sharad Group has established itself as a global leader in providing high-quality minerals. They are a reputed silica sand manufacturer, known for supplying unadulterated sand with strict quality standards.
Each bag of sand is washed and properly graded to perform efficiently in any filter. Moreover, they also supply other similar minerals like Bentonite, Kaolin, and Ball Clay. This proves their robust hold over the market and their impeccable logistics.
Ready to get the highest filtration purity for your water? Contact The Sharad Group today and find the exact silica sand that fits your unique requirements!
FAQs
1. What is the main function of silica sand in a water filter?
The primary function of sand in water filtration is to act as a physical filter. As water passes through the sand bed, the tiny spaces between the grains trap particles like dirt, sediment, algae, and other debris, resulting in cleaner, clearer water.
2. What type of silica sand is used in swimming pool filters?
Most residential and commercial swimming pool filters require #20-grade silica sand. This sand has a grain size range of 0.45 – 0.85 mm, which is the optimal size for trapping fine contaminants like body oils and dirt while maintaining good water flow. It is important to purchase this specific grade from reputable silica sand manufacturers or suppliers.
3. Where can I buy silica sand for my pool filter?
You can buy the correct silica sand for a pool filter from pool supply stores, hardware stores with pool sections, landscape suppliers, or directly from industrial silica sand suppliers. Always ensure the product is clearly labeled as “Pool Filter Sand” or “#20 Grade Silica Sand” for guaranteed performance.
4. What is the difference between pool filter sand and other silica sand?
The key difference is the precise grading. Silica sand used in water filtration for pools is washed, dried, and sieved to a very specific, uniform size (like the 0.45–0.85 mm of #20 grade). This consistency prevents clogging and channeling. In contrast, general-purpose or construction sand has irregular, ungraded sizes and may contain impurities that cloud water.
5. Why should I buy from a specialized silica sand manufacturer or supplier?
Purchasing from established silica sand manufacturers and suppliers ensures you receive a product that meets strict industry standards for grain size, purity (high silica content), and cleanliness. This guarantees your silica sand water filter operates at peak efficiency, providing clear water and protecting your filter system from damage caused by low-quality, inconsistent sand.
