3. Water pollution
dueto heavy
metal
Contents
▪ Water pollution
▪ Heavy metal
▪ Introduction heavy metals in water pollution
▪ Heavy metal with example
▪ Effects
▪ Sourse of heavy metals
▪ Lead
▪ Cadmium
▪ Copper
▪ Arsanic
4. Water pollution
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metal
▪ What Is Water Pollution?
▪ Water pollution occurs when harmful substances
often chemicals or microorganisms contaminate a
stream, river, lake, ocean, aquifer, or other body of
water, degrading water quality and rendering it toxic
to humans or the environment.
5. Water pollution
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metal
▪Heavy metals:
▪ Introduction. The term heavy metal refers to any metallic
chemical element that has a relatively high density and
is toxic or poisonous at low concentrations. Examples of
heavy metals include mercury (Hg), cadmium (Cd),
arsenic (As), chromium (Cr), thallium (Tl), and lead (Pb).
6. Water pollution
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metal
INTRODUCTION OF HEAVY METAL IN WATER POLLUTION
▪ Industrialdevelopmentnear the rivers have led to more stress
on the river, and with increased stress, the water becomes
polluted,and worsening environmentalhealthis observed.
HEAVY METALS WITH EXAMPLES :
▪ Elements that have high density and are less noxiousare
known as heavy metals. Examples of heavy metals are lead,
iron, mercury, cadmium, zinc, arsenic, copper, and chromium.
EFFECTS OF HEAVY METALS ON LIVING ORGANISMS :
▪ The toxicity of these heavy metalsin the human body reduces
energy levels; disrupts brain functioning;disturbsthe
functioning of variousother organs such as the brain,lungs,
liver, and kidney;and also hindersblood composition.If the
contact with heavy metalscontinues, then it can hinder the
physical,neurological,and muscularfunctioning.
7. Water pollution
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EFFECTS OF HEAVY METALS ON FISH:
▪ These heavy metals are neurotoxinsfor the fish living in the
aquaticenvironment.
▪ When these heavy metalsenter the fish body, they interact
with them to generate biochemicalreaction inside the fish,
which makes it difficult for fish to communicatewith their
surroundings .
8. Waterpollution
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▪ SOURCES OF HEAVY METALS :
▪ Lead
▪ Lead is a fairly soft, highly malleable naturally occurring
metal that is considered harmful at any dose.
▪ The most common way it gets into your drinking water is
through the corrosion of pipes or plumbing fixtures. Older
homes (built in the 1930s or before) are often equipped with
copper plumbing systems that are prone to corrosion, so this
is most likely to occur in older homes
▪ . New rules created for developers and homeowners in 1966
restricted the threat of lead in drinking water, though it was
still used in plumbing materials until the 1980s.
▪ Lead can also get into your water source when natural
deposits erode into it or when industrial activity leaks it
directly into your water.
10. Water pollution
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metal
▪ Copper
▪ Copper is the most common heavy metal to
appear in tap water.
▪ This is because copper can leach into tap water if
pipes, faucets, and other plumbing fixtures begin to
corrode. It can also get into your water supply if the
groundwater has not been sufficiently treated.
▪ Copper is another element that is essential to your
health, but too much of it can cause vomiting,
diarrhea, stomach cramps, and even kidney and
liver disease.
12. Water pollution
dueto heavy
metal
▪ Arsenic
▪ Arsenic is a common heavy metal in the Earth’s crust,
sometimes resulting from volcanic activity or other natural
processes.
▪ However, human activities such as pesticide production and
mining have led to increased concentrations of arsenic in
groundwater.
▪ Arsenic is one of the most toxic heavy metals that can make
its way into your water through natural erosion from rocks
and soils, agricultural runoff from orchards, or waste streams
from metals and electronics industries.
▪ In small doses, arsenic exposure can cause skin
discoloration, stomach pain, nausea, and diarrhea. However,
chronic arsenic poisoning can cause neurological problems,
cardiovascular disease, immune system disorders, cancer of
the bladder, lungs, skin, kidney, liver, or prostate, and even
endocrine issues such as diabetes.
14. Water pollution
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metal
▪ Cadmium
▪ Cadmium is a common heavy metal used in metal
plating, machinery, and batteries.
▪ Cadmium poisoning can occur when consuming
plants and animals that were exposed to
contaminated water or soil; however, the World
Health Organization explains that cadmium usually
makes its way into our water through “impurities in
the zinc of galvanized pipes and solders in fittings,
water heaters, water coolers, and taps.” Short-term
exposure to this heavy metal can cause nausea
and vomiting, but more serious overexposure can
lead to cancer as well as kidney, liver, and
musculoskeletal damage.
