Phosphates have been used for over sixty years to improve drinking water quality. Originally, they were added to well water to sequester iron, manganese and other naturally occurring minerals. In the early 90s, the Lead and Copper Rule provided a new avenue for phosphate use: the reduction of lead and copper through corrosion inhibition.

There are two types of phosphates: Orthophosphates and Polyphosphates. Orthophosphates are single phosphates, which combine with calcium in water, creating a calcium orthophosphate barrier film. The barrier film forms between the distribution system’s pipes and the drinking water. This protects the metal from corroding, delivering clean, iron-free water to the customer. Polyphosphates, in contrast, consist of many phosphates linked together in a long chain of sodium or potassium ions.

Polyphosphates sequester naturally occurring minerals in the water, such as iron, manganese and calcium. The polyphosphate ties up, or sequesters the mineral. In this way, the mineral remains in a clear, soluble state, instead of reacting with chlorine through oxidation and causing red or black water.

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The AquaPure product line offers liquid blended phosphates for use in
drinking water distribution systems.

Certified to NSF Standard 60 quality parameters, Brenntag manufactures at multiple production locations throughout the US. Our emphasis on product performance, responsive service, and competitive pricing provides the water utility a complete package of product and services to meet its needs.

AquaPure® Blends

Brenntag manufactures the AquaPure Product Line by blending (reacting) polyphosphates and orthophosphates together. Based on the customer’s water quality, a specific blend and dosage rate is selected to achieve the desired product performance.

AquaPure Ortho-Poly Phosphate and Zinc Orthophosphate Product Line
Offered by Brenntag North America