EESA10H3 Lecture Notes - Lecture 3: Clay Minerals, Aquifer, Water Scarcity
5 Feb 2018
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Some may be returned to the source for reuse but not all. Fecal coliform and e. coli bacteria -- means it was in contact with the sewer; contamination with human and animals wastes, diarrhea, cramps, nausea, headaches, renal failure, coagulation disorders, death. Salmonella typhi -- typhoid fever (high fever, abdominal pain, constipation). Park, bc (photo in slides from early 1900s). Fluoride concentration greater than 1. 5 mg per liter can become potentially harmful. Small amounts added to drinking water to promote dental health: exposure to high concentrations of fluoride can cause dental fluorosis and skeletal fluorosis (bone disease). Lead pipes are banned: anemia, brain, kidneys and nervous system damage, appetite loss, abdominal pain, constipation. Irritability: headache, miscarriages and stillbirths, most serious for young children (intellectual development, behaviour, size and hearing of infants, example: children in the south bronx, new york city are exposed to lots of lead.
