<P> Many portable dehumidifiers can also be adapted to connect the condensate drip output directly to a drain via a hose . Some dehumidifier models can tie into plumbing drains or use a built - in water pump to empty themselves as they collect moisture . Alternatively, a separate condensate pump may be used to move collected water to a disposal location when gravity drainage is not possible . </P> <P> Central air conditioning units typically need to be connected to a drain, because the quantity of condensate water generated by such systems can be quite large over time . If the condensate water is directed into the sewer system, it should be suitably trapped . Otherwise, back pressure can allow smells or sewer gases to enter the building . The condensate should not be directed into a septic system of a house, because large central air conditioning systems discharge water that does not need to be treated by septic systems . If the height of the air handler (containing the evaporator) is above the ground level or in the attic of a house, condensate lines can also often be routed into rain gutters . Air handlers located in the basement of a house require condensate pumps to pump the water up to ground level . </P> <P> Generally, dehumidifier water is considered a rather clean kind of greywater: not suitable for drinking, but acceptable for watering plants, though not garden vegetables . The health concerns are: </P> <Ul> <Li> The water may contain trace metals from solder and other metallic parts, most significantly lead (which is quite dangerous), but also copper, aluminum, or zinc . The trace metals may pose a danger if used on edible plants, as they can bioaccumulate . However, the water is usable for irrigation of non-edible plants . </Li> <Li> Various pathogens, including fungal spores, may accumulate in the water, particularly due to its stagnancy . Unlike in distilled water production, the water is not boiled, which would kill pathogens (including bacteria). </Li> <Li> As with distilled water, beneficial minerals are largely absent . </Li> </Ul>

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