AO Smith High-Efficiency Reverse Osmosis

Common questions

Is AO Smith High-Efficiency Reverse Osmosis healthy?

AO Smith High-Efficiency Reverse Osmosis scores 94/100 on Scout's independent analysis of ingredients, additives, and lab results — one of the stronger scores in Scout's catalog. AO Smith High-Efficiency Reverse Osmosis scores 94/100 for water filtration performance.

How does AO Smith High-Efficiency Reverse Osmosis compare to other sink filters?

AO Smith High-Efficiency Reverse Osmosis ranks #2 of 15 sink filters in Scout's independent rankings. The current top score in the category is Aquasana SmartFlow Reverse Osmosis at 94/100.

Which ingredients drive AO Smith High-Efficiency Reverse Osmosis's score?

In Scout's ingredient-by-ingredient analysis, Lead, Fluoride, Chlorine count in its favor. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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AO Smith High-Efficiency Reverse Osmosis

Scout Pick
94 Excellent
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At a glance

Beneficial ingredients 12
Harmful ingredients 0
Category Sink Filters
Summary

AO Smith High-Efficiency Reverse Osmosis scores 94/100 for water filtration performance. 12 contaminants effectively filtered.

Key ingredients 14

Lead
Good

Reduction of up to 99%. Lead is a heavy metal that can cause serious health issues, especially in children.

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Fluoride
Good

Reduction of up to 99%. Fluoride can contribute to dental and skeletal issues when consumed in excess.

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Chlorine
Good

Reduction of up to 99%. Chlorine is commonly used in water treatment but can produce harmful byproducts.

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Chloramine
Good

Estimated reduction of over 60%. Chloramine can cause skin irritation and is less effective than chlorine in disinfection.

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Mercury
Good

Reduction of up to 99%. Mercury is toxic and can lead to neurological damage.

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Pesticides
Good

Estimated reduction of over 60%. Pesticides can contaminate drinking water and pose health risks.

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Pharmaceuticals
Good

Estimated reduction of over 60%. Pharmaceuticals in water can disrupt ecosystems and human health.

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VOCs
Good

Estimated reduction of over 60%. Volatile organic compounds can cause health issues and affect air quality.

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Microbiologicals
Good

Reduction of up to 99%. Microbiological contaminants can cause serious infections and illnesses.

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Asbestos
Good

Reduction of up to 99%. Asbestos fibers can lead to lung disease and cancer.

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Microplastics
Good

Estimated reduction of over 60%. Microplastics can accumulate in the food chain and pose health risks.

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Trihalomethanes
Good

Estimated reduction of over 60%. These byproducts can cause cancer and other health issues.

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Nitrates
Neutral

Estimated reduction of 20-60%. Nitrates can cause health issues, especially in infants.

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Nanoplastics
Neutral

No tests. The presence of nanoplastics in water is a growing concern, but specific reduction data is not available.

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