Water Treatment - 8 Common Water Problems—and Their Cures - Bob Vila
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Bad Taste and Odor
Problem: Organic matter in surface water supplies can cause musty, moldy or fishy tastes or odors. Sulfates in the water—or leaking into the water supply from a sewer or septic system—can also lead to this problem.
Management: Except for the “rotten-egg” odor caused by hydrogen sulfide, activated carbon filters can solve most taste and odor issues. In extreme cases, alleviating taste and odor problems may require oxidizing filters. Call in a professional for a much more serious problem: a septic or sewer leak.