|
|
| Contaminants
in septic |
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| systems: Pathogens |
|
|
|
|
|
|
|
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| z | Parasites (protozoa)
such as |
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| Cryptosporidium
and Giardia usually |
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| filtered by soil
in less than 10 feet |
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| z | Bacteria still
used as indicator, but may be |
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| replaced in the
future |
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