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A woman with a ponytail drinks water from a clear glass, sitting in a relaxed indoor setting. The background is softly blurred, emphasizing the importance of hydration.

Taste and Odor Control

Improving Consumer Confidence with Better Taste and Odor Control

Unpleasant tastes and odors in drinking water are a frequent source of consumer complaints and can lead to diminished confidence in water quality, even when the water is safe to drink:

  • Algae and Organic Material: Natural organic matter, including algae blooms in surface water sources, often imparts earthy, musty, or fishy tastes and odors. These compounds can be highly noticeable even at extremely low concentrations.
  • Seasonal Variations: Warm weather often exacerbates taste and odor issues due to increased algal growth and decomposition in reservoirs and rivers.
  • Chlorination Byproducts: While chlorination is essential for disinfection, it can react with natural organic matter to produce unpleasant tastes and odors, such as a medicinal or bleach-like aftertaste.

Operational and Maintenance Challenges

Addressing taste and odor issues involves significant challenges for water treatment operators:

  • Detection at Low Levels: Human senses are highly sensitive to taste and odor compounds, detecting them at parts-per-trillion levels. This makes addressing complaints particularly challenging.
  • Complex Mixtures: Taste and odor issues often arise from a combination of compounds, making it difficult to pinpoint and treat the specific source.
  • Impact on Distribution Systems: Odor-causing compounds can accumulate in biofilms or react with other chemicals in distribution pipes, leading to intermittent or recurring issues.

Regulatory and Customer Relations Implications

Even though taste and odor are not directly tied to health risks, they significantly influence public perception and regulatory compliance:

  • Customer Trust: Unpleasant tastes and odors can cause consumers to question water safety, potentially driving them to bottled water or other alternatives.
  • Compliance and Aesthetics: Water utilities must meet aesthetic water quality goals, often enforced at the state level, to maintain customer satisfaction and avoid reputational damage.
  • Increased Operating Costs: Utilities facing taste and odor complaints often invest heavily in short-term fixes like flushing systems, additional chemical treatments, or emergency supplies, increasing costs.

How Carus Can Help


Carus provides powerful permanganate solutions to eliminate taste and odor compounds in water treatment processes:

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Permanganate Oxidation:

CAIROX® and AQUOX® potassium permanganates and CARUSOL® liquid permanganate effectively oxidize odor-causing compounds.

Visual Application Confirmation:

Permanganate’s distinct purple color helps operators verify effective treatment.

Managing Effects of Algae Blooms:

Address taste and odor issues associated with algae. Our permanganate-based solutions can also oxidize several cyanotoxins, enhancing the safety and quality of treated water.

Solutions in Action

  • Enhanced customer satisfaction with better-tasting water.
  • Cost-effective, targeted treatment for various water sources.

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Deliver Better-Tasting Water Today

Contact our experts today to learn more about how Carus can help with taste and odor challenges in drinking water.

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