Fecal coliform bacteria are mostly found in drinking water that comes from private wells and small water systems. This is partly because private water supplies, small rural public water supplies and private wells are not required, by law, to be tested. Every time you drink water from one of these sources, you may be exposed to harmful levels of bacteria, which can pose immediate threat to your health. Families drinking non-chlorinated water(such as from an underground well) and apartment dwellers roof-top wood storage tanks are especially susceptible to water contamination. Home water treatment devices utilizing GAC (Granular Activated Charcoal) as a singular filtering device may also become a breeding ground for bacteria.
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