Septic tanks can be dangerous to your health.
Koplin
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D005431:Florida; D006801:Humans; D011635:Public Health Administration; D012037:Refuse Disposal / Q000592:standards*; D012499:Sanitation / Q000592:standards; D012722:Sewage / Q000009:adverse effects*; D014481:United States; D014871:Water Microbiology
D012722:Sewage