NSF Consumer Information: Contaminant Guide

> About the NSF Mark
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> Residential Appliances
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> Scrub Club®
> Search for NSF-Certified Products
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> Wastewater Treatment
- » Alternative Residential Systems
- » Compost Toilets
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- » Septic Tank Filters
- » Chlorine Disinfection
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> Water Treatment
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- » Well Water
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Look for the mark and you'll find a safer product.

Chlorine
Maximum Recommended Usage Level	4 mg/L
Potential Health Effects (from ingestion of water)	Chlorination by-products (Trihalomethanes)
Purpose of Additive	Disinfection
Applicable NSF/ANSI Standard(s)	Standard 42
Water Treatment Technologies Certified by NSF for Reduction of this Chemical Additive	Filtration (i.e. carbon/charcoal)
Special Notes	Systems certified for reduction of chlorine will not automatically be effective for chloramines as well. Contact your local water utility to determine which disinfecting agent is used in your community.