Heavy Metals Although
heavy metals exist in nature, when concentrations of
such metals as mercury, cadmium and lead build to
higher-than-normal levels, they become potentially
hazardous. Major sources of heavy metals pollution
include mineral and metal processing, manufacturing of
inorganic products and use of coal in power production.
Cadmium, used in metal plating and in batteries,
vaporizes when it is smelted; heavy concentrations can
cause kidney and bone-arrow diseases. Residues from
lead-based paints can cause lead poisoning in children.
"Zero waste management and 0% of sanitation. Lack of
orientation and education. This kills the river."
Dioxin
The DIOXIN group of chemical
compounds are unwanted by-products occurring in the
making herbicides, wood preservatives and many other
products.
Aromatic Hydrocarbons
Polycylic
aromatic hydrocarbons are formed by industrial processes
and during the burning of gasoline, waste materials and
many other substances.
"The river now... after its great and big service to
the kagay-anons."
Organic Solvents
Organic solvents,
vital to many industrial processes, are often toxic. It
may center waterways in factory effluent. Benzene has
been casually linked with leukemia and central nervous
system disorders.
