When it comes to brewing craft beer, ingredients like malt, hops, and yeast often steal the spotlight. But there’s another essential component that plays a crucial role in the taste and quality of every pint—water. At Lithology Brewing Co., we know that great beer starts with great water, and here on Long Island, we’re fortunate to have a unique and high-quality water source that sets our brews apart.
The Aquifers Beneath Our Feet
Long Island’s water supply comes from a system of underground aquifers—vast, naturally filtered reservoirs of water held beneath layers of sand and gravel. These aquifers have been shaping the region’s water for thousands of years, naturally purifying it as it flows through sediment layers. The three primary aquifers supplying Long Island are:
The Upper Glacial Aquifer – A shallow water source that provides fresh groundwater but is more susceptible to contamination due to its proximity to the surface.
The Magothy Aquifer – The largest and most widely used aquifer, supplying much of Long Island’s drinking water.
The Lloyd Aquifer – The deepest and oldest aquifer, containing some of the purest water on Long Island, though it’s less frequently accessed.
These aquifers contribute to Long Island’s reputation for clean, mineral-rich water—an essential foundation for brewing exceptional beer.
Why Long Island Water Matters for Brewing
Water makes up about 90% of beer, meaning its mineral content can significantly impact the final product. The natural composition of Long Island’s water provides a balanced profile, making it highly adaptable for brewing a wide range of beer styles. The key factors influencing brewing include:
Mineral Content: Calcium, magnesium, and bicarbonate levels affect the mouthfeel, yeast activity, and overall flavor of beer. Long Island’s water has a neutral-to-slightly-hard composition, making it versatile for different styles.
pH Levels: The pH of brewing water impacts the mash process, influencing the extraction of sugars and flavors from grains.
Purity: Thanks to natural filtration through sand and gravel, Long Island’s water is relatively pure, requiring minimal treatment before brewing.
How We Use Long Island’s Water to Craft Great Beer
At Lithology Brewing Co., we embrace the unique water profile of Long Island and tailor it to enhance each beer style. Whether we’re crafting a crisp pilsner, a hoppy IPA, or a rich stout, we carefully adjust mineral levels when needed to bring out the best flavors in every batch.
Our connection to Long Island’s geology goes beyond just water—it’s in our name, our philosophy, and our dedication to creating locally inspired craft beer. By utilizing the natural resources beneath us, we’re able to produce high-quality, flavorful brews that reflect the land we call home.
Raise a Glass to Long Island’s Water
Next time you sip a pint at Lithology Brewing Co., take a moment to appreciate the geology beneath your feet. The aquifers of Long Island are not just providing drinking water—they’re the backbone of every beer we brew. Cheers to great water, great beer, and the science that makes it all possible!
Stay tuned for more deep dives into craft beer, brewing techniques, and the natural world that influences every sip. Want to learn more? Stop by the tasting room and chat with our brewers—we love sharing the science behind the suds!