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Chemical: a substance that has specific characteristics based on its molecular structure.
Contaminant: a material that doesn't belong in a product.
Fertilizer: a material added to soil to help plants grow.
Germs: include bacteria, viruses, and anything that isn't supposed to be in our bodies.

Water Quality Issues

If you’ve ever walked past a clear running stream while you were thirsty, you may have thought the water looked good enough to drink. Humans usually aren’t tempted by water that is cloudy or muddy looking, but even clear water may carry some hidden risks. For some people, getting clean drinking water is as easy as turning on the faucet. But globally, two million people lack access to safe drinking water.

It can be dangerous to drink contaminated water. The health impacts are caused by two main types of contaminants: germs and chemicals. 

Gross Germs

Most germs that contaminate water come from poop. That’s right… Poop-related bacteria and viruses are often in our water. These germs include E. coli, norovirus, and salmonella. But if you think about it, it makes sense. Many animals don’t have a specific spot to go to the bathroom, like we do. So a variety of animals end up pooping in natural streams. 

In human water systems, these contaminants can get into the water supply from the sewer system, storms, or agriculture. Drinking water contaminated with these germs can make you sick.

Crummy Chemicals

Chemicals also have a huge influence on our water quality. Pollution from industry can (and does) put chemicals into the water supply. High nitrate levels can be found in farming areas like the Midwestern United States, due to the use of fertilizers on crops. Certain pipes can also add harmful substances to water, like copper and lead. Arsenic and radon can also be found naturally in certain water supplies. Radon is a leading cause of lung cancer. 

Terrific Treatment

The good news is that water can usually be treated to remove contaminants. In some cases, simply boiling or filtering water is enough. This is very important to do when you drink water from natural streams in the outdoors. In other cases, more complicated treatments are required. 

One major thing you can do is to make sure you drink filtered water when you can. Clean, safe drinking water is important to your health. It’s also important to keep this in mind, and to report any people or issues that might be polluting bodies of water near where you live.

Read more about: What to Know About Water

You may need to edit author's name to meet the style formats, which are in most cases "Last name, First name."
https://askabiologist.asu.edu/water-quality

Bibliographic details:

  • Article: Water Quality
  • Author(s): Dr. Biology
  • Publisher: Arizona State University School of Life Sciences Ask A Biologist
  • Site name: ASU - Ask A Biologist
  • Date published: 28 Nov, 2023
  • Date accessed:
  • Link: https://askabiologist.asu.edu/water-quality

APA Style

Dr. Biology. (Tue, 11/28/2023 - 16:29). Water Quality. ASU - Ask A Biologist. Retrieved from https://askabiologist.asu.edu/water-quality

American Psychological Association. For more info, see http://owl.english.purdue.edu/owl/resource/560/10/

Chicago Manual of Style

Dr. Biology. "Water Quality". ASU - Ask A Biologist. 28 Nov 2023. https://askabiologist.asu.edu/water-quality

MLA 2017 Style

Dr. Biology. "Water Quality". ASU - Ask A Biologist. 28 Nov 2023. ASU - Ask A Biologist, Web. https://askabiologist.asu.edu/water-quality

Modern Language Association, 7th Ed. For more info, see http://owl.english.purdue.edu/owl/resource/747/08/
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