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Cracks and deterioration
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Roofing (especially wood or
composition shingles) usually deteriorates first on southern
exposures. Check southern slopes for cracking or deterioration.
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Holes
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Missing shingles or holes in the roofing may be causing wet
spots. To find holes, check for a drip trail or spot of light coming
through in the attic. Stick a nail, straw or wire through the hole to
mark the spot on the outside.
Private sewage systems
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Flooding of a private sewage system can be a hazardous situation for
homeowners. It may lead to a back-up of sewage in the home,
contaminated drinking water and lack of sanitation until the system is
fixed. When flooding or saturated soil conditions persist, a private sewage
system cannot function properly. Soil treatment systems for wastewater
rely on aerobic (with oxygen) regions to reduce the amounts of chemicals
and living organisms (viruses, bacteria and protozoa). When the soil is
saturated or flooded, those hazardous materials can enter the
groundwater and your drinking water supply.