What are the 2 most common groundwater contaminants?

What are the 2 most common groundwater contaminants?

Excess iron and manganese are the most common natural contaminants. Another form of contamination results from the radioactive decay of uranium in bedrock, which creates the radioactive gas radon.

What is the most common source of groundwater contamination?

The significant sources of contamination in groundwater are farming chemicals, septic waste, landfills, uncontrolled hazardous waste, storage tanks, and atmospheric pollutants.

  • Agricultural Chemicals.
  • Septic Waste.
  • Landfills.
  • Hazardous Waste Sites.
  • Storage Tanks.
  • Atmospheric Pollutants.
  • Underground Pipes.
  • Road Salts.

Which of the following is a common groundwater contaminant?

Groundwater contamination occurs when man-made products such as gasoline, oil, road salts and chemicals get into the groundwater and cause it to become unsafe and unfit for human use. Materials from the land’s surface can move through the soil and end up in the groundwater.

What are the 3 types of groundwater contamination?

Human activities which may contaminate groundwater include over-fertilization, misuse of pesticides, oil spills, leaky landfills, leaky septic systems, and leaky underground storage tanks. The three most common contaminants of groundwater are sediment, chemicals, and fecal coliform.

What contaminants might be found in groundwater?

Arsenic, hydrogen sulfide and radon are all leached out of the soils by percolating groundwater and can be found in California’s aquifers. Arsenic is a semi-metallic element used in wood preservatives, agricultural chemicals, herbicides and pesticides.

What pollutes underground water?

Groundwater pollution can be caused by chemical spills from commercial or industrial operations, chemical spills occurring during transport (e.g. spillage of diesel fuels), illegal waste dumping, infiltration from urban runoff or mining operations, road salts, de-icing chemicals from airports and even atmospheric …

What are the main sources of ground water pollution?

Causes of Groundwater Pollution

  • Natural Sources. Naturally occurring substances found in the soils and rocks can be dissolved in water causing contamination.
  • Septic Systems.
  • Hazardous Waste Disposal.
  • Petroleum Products.
  • Solid Waste.
  • Surface impoundments.
  • Agricultural Chemicals.
  • Injection wells.

What are the possible causes of groundwater contamination?

Sources of Groundwater Contamination

  • Waste. Any type of used water is called wastewater.
  • Landfills.
  • Air Pollution.
  • Fuels.
  • Septic Systems.
  • Chemicals.
  • Pesticides.
  • Animal Waste.

What can contaminate groundwater?

Contaminants Found in Groundwater Industrial discharges, urban activities, agriculture, groundwater pumpage, and disposal of waste all can affect groundwater quality. Contaminants can be human-induced, as from leaking fuel tanks or toxic chemical spills.

Which of the following are sources of groundwater contaminants quizlet?

What are some sources of groundwater contamination? Spills, leaks, seepage or application. Liquid hazardous substances are spilled and soak down through the soil or rock into the groundwater.

What are the contaminants found in groundwater?

High concentrations of parameters like salinity, iron, manganese, uranium, radon and chromium, in groundwater, may also be of geogenic origin. This contaminants can be important locally but they are not as widespread as arsenic and fluoride.

What are 5 ways groundwater can be polluted?

There are five major ways groundwater can be contaminated by chemicals, bacteria or saltwater.

  • Surface Contamination.
  • Subsurface Contamination.
  • Landfills and Waste Disposal.
  • Atmospheric Contamination.
  • Saltwater Contamination.

What you should know about common well water contaminants?

What Common Contaminants In Your Water Should You Watch Out For? Aluminium. Aluminium can leach from rock or soil into the water supply and may be found in groundwater. Arsenic. The EPA has set a maximum contaminant goal level (MCLG) of zero for arsenic, but the maximum contaminant level (MCL) allowed is 0.010 mg/L. Barium. Cadmium. Lead. Nitrates. Radium. Silver. Uranium. Zinc.

What we can all do to reduce groundwater pollution?

Go Native Use native plants in your landscape.

  • Reduce Chemical Use Use fewer chemicals around your home and yard,and make sure to dispose of them properly – don’t dump them on the ground!
  • Manage Waste Properly dispose of potentially toxic substances like unused chemicals,pharmaceuticals,paint,motor oil,and other substances.
  • What contaminants may be present in our water?


  • Ammonia
  • Arsenic
  • Barium
  • Cadmium
  • Chloramine
  • Chromium
  • Copper
  • Fluoride
  • Bacteria&Viruses
  • What are some examples of groundwater pollution?

    Water pollution in Pali (Rajasthan) is an excellent example of groundwater pollution. For nearly one lakh population of the city, underground water is the only source of drinking water.