Since 1917, Red Flint Sand and Gravel, LLC has produced the highest quality water filtration media and specialty aggregates available worldwide. Red Flint takes pride in our ability to manufacture products with precise effective size ranges and the lowest uniformity coefficients in the industry. Our sand and gravel meets or exceeds the AWWA B100 Standard, ASTM C33/33M and is NSF/ANSI Standard 61 & 372 certified for quality and purity. Red Flint Silica Sand is graded specifically for use in water and waste water filtration processes. Our sand can be used in municipal, industrial, or residential applications. The low acid solubility and high silica content of our filter sand ensures durable and long lasting filter media performance.


Red Flint Filter Sand and Gravel
Typical Sieve Analysis
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