Quality Testing of Drinking Water

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Quality Testing of Drinking Water
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Why Test Your Water?

• Nearly all water in the world contains
  contaminants
• Many dissolved minerals, carbon compounds, and
  microbes find their way into drinking water
• Pollutants in drinking water may affect household
  routines and human health
• The only way to ensure safety of your water
  supply is to have a periodic laboratory water
  analysis done

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Water Testing Parameters

• Color
• Color in water may be due to the inorganic ions,
  such as iron and manganese, humus and peat
  materials, plankton, weeds and industrial wastes.
  
• Odor
• Odor is recognized as a quality factor affecting
  acceptability of drinking water. Most organic and
  some inorganic chemicals contribute odor.
• Turbidity
• The Turbidity in water is the reduction of
  transparency due to the presence of particulate
  matter such as clay or silt, finely divided
  organic matter, plankton or other microscopic
  organisms.

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Water Testing Parameters

• Manganese
• The intake of manganese can be high as 20 mg/day
  without apparent ill effects. It should be noted
  that manganese may be objectionable to consumers
  if it is deposited in water mains and causes
  water discoloration
• Iron
• Anaerobic ground waters may contain iron up to
  several milligrams per liter without causing
  discoloration or turbidity in the water.
• Calcium
• Calcium is a major constituent of various types
  of rock. It is one of the most common
  constituents present in natural waters ranging
  from zero to several hundred milligrams per
  liter.

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Water Testing Parameters

• pH value
• pH value is the logarithm of reciprocal of
  hydrogen ion activity in moles per liter. In
  water solution, variations in pH value are mainly
  due to hydrolysis of salts of strong bases and
  weak acids.
• Alkalinity
• Alkalinity of water is its quantitative capacity
  to react with a strong acid to a designated pH.
  Excess alkalinity in water is harmful for
  irrigation which leads to soil damage and reduce
  crop yields.
• Conductivity
• Specific conductance yields a measure of waters
  capacity to convey an electric current.

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Important Water Analysis Equipment

• Total Organic Carbon Analyzer (TOC)
• A total organic carbon analyzer determines the
  amount of carbon in a water sample. There are two
  types of analyzers. One uses combustion and the
  other chemical oxidation.
• pH Analyzer
• Water pH testers and analyzers help analyze pH
  levels and detect faults in systems with
  electronic pH meters.

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Important Water Analysis Equipment

• Water Desalination Equipment
• The parameters measured in Desalination
  instruments include Alkalinity, (COD),
  Conductivity, Dissolved Oxygen, Water Hardness,
  Iron, Manganese, Turbidity in water etc.

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Important Water Analysis Equipment

• ORP Meters
• ORP meters measure the very small voltages
  generated when the measuring probe is placed in
  water in the presence of an oxidizing agent.

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Thank You