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Carus

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Phosphates

Carus is the leading manufacturer and supplier of phosphate-based corrosion control and sequestration technologies in North America. With over 100 custom blend ratios—including orthophosphates, zinc-orthophosphates, poly-orthophosphates, and polyphosphates—our phosphates are designed to meet a wide range of water quality needs. All products are NSF certified and rigorously tested to meet our QA/QC standards. Our highly experienced support and sales teams work closely with customers to deliver timely, customized solutions that ensure optimal product performance.

Carus phosphates are designed to tackle critical water quality concerns, including corrosion control, lead and copper mitigation, and scale prevention. Our phosphates protect infrastructure, improve water clarity, and ensure compliance with EPA Lead and Copper regulations. By forming a protective film on metal surfaces, Carus phosphates extend the life of water distribution systems, reduce chlorine demand, and enhance flow (C-factors), making them a preferred choice for municipalities.

Applications:

  • Corrosion Control: Protects pipes, valves, and household plumbing, preventing red/brown water and maintaining system integrity.
  • Lead and Copper Reduction: Mitigates lead and copper release, ensuring safer drinking water.
  • Scale Prevention: Reduces scale buildup and cloudy water, improving system efficiency and reducing operational costs.

Carus’ phosphate solutions deliver proven results in safeguarding water infrastructure and ensuring high-quality water for communities.

Our Solutions

Blended Phosphates for Total Water Treatment

Our AQUA MAG®, CALCIQUEST®, CARUS™ 8000, and AQUADENE® phosphates provide effective corrosion control and sequestering across various water qualities, managing iron, manganese, and total hardness.

Orthophosphates for Corrosion Control

CARUS™ 4000 series products form an anodic film on metals to prevent corrosion, ensuring compliance with EPA Lead and Copper rules. Ideal for unlined cast iron, copper, and lead pipes.

Zinc Orthophosphates for Dual Protection

The CARUS™ 3000 series provides both anodic and cathodic protection, forming a robust barrier on metal surfaces to control corrosion in water systems and meet EPA standards.

Polyphosphates for Metal Sequestration

CARUS™ 1000 series polyphosphates effectively sequester iron, manganese, and hardness minerals, preventing discoloration, scaling, and hard water issues.

Why Carus?

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Laboratory Support

Carus offers expert technical support to answer questions, assess treatment options, and conduct lab testing. Our services include consulting, treatability and feasibility studies, and comprehensive analytical testing.

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Innovation & Technology

Carus is committed to ongoing innovation to help our customers solve complex environmental challenges. Our team continuously develops new technologies and refines existing solutions to ensure effective, sustainable outcomes for water, air, and soil treatment.

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Field Services

Carus provides comprehensive on-site treatment assistance as part of our technical support. Our services include technical expertise, supervision, testing, and custom feed equipment design and installation to ensure successful applications.

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Customer Support

For over 100 years, Carus has been dedicated to delivering exceptional customer service and support. Our personalized technical expertise and responsive service helps our clients solve their challenges and achieve their goals. We combine responsible chemistry with a customer-first approach.

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Ready to Get Started?

With over 40 years of expertise in corrosion control and sequestration, Carus’ phosphate solutions are trusted across North America for their quality and effectiveness. Whether for municipal or industrial water treatment, our dedicated team is ready to help you find the right phosphate blend to address your unique water challenges. Contact us today to learn how Carus phosphates can enhance your water quality and extend infrastructure life.

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