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Common Questions

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Common Drinking Water Contaminants

While certain water contaminants, like iron, sulfur, and total dissolved solids, are easy to spot by residue, odor, and discolored water, other potentially harmful contaminants, like arsenic and lead, can go undetected by the senses.

Learn about common water contaminants

Culligan Water Delivery

Your Culligan Water Delivery Service Questions, Answered

Learn more about Culligan Water’s convenient delivery service and enjoy cleaner, better-tasting water whenever you need it most.

Learn about Culligan’s Water Delivery Service

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What are PFAS, PFOA, and PFOS?

Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are a group of man-made chemicals that include Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoic Acid (PFOA). These elements have a negative effect on the health of those exposed to them.

Learn more about Chemical Water Contamination

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What is Reverse Osmosis?

Quickly find answers to some of our most-asked questions about Reverse Osmosis.

Learn about Reverse Osmosis

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What is a Water Softener?

Quickly find answers to some of our most-asked questions about Water Softeners.

Learn about Water Softeners

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Culligan Water Lab Test Kits

The Essential and Comprehensive Water Lab Test Kits provide a fun, interactive way to immediately understand the quality of the water through graphs and charts.

Learn more about Culligan Water Lab Test Kits