Water Testing

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When should I get my water tested?

• If your well does not meet construction codes.
• The area around the wellhead has been flooded or submerged.
• Back-siphoning has occurred.
• You have mixed or used pesticides near the well, or have spilled pesticides or fuel near the well.
• You have a heating oil tank or underground fuel tank near the well that you know has leaked.
• You are pregnant, are planning a pregnancy, or have an infant less than 6 months old.
• Your septic system absorption field, or your neighbor's, is close to the well (within 100 feet). 

What should I test for?

Testing for fecal coliform and/or total bacteria is a good place to start.  Depending on the results of that test, you may be advised to test for other contaminants such as metals, sediment, or organic pollutants.  A presence of live coliforms in your water is an indication that there is surface water entering your drinking water. There will likely be other pollutants in your water as well.

 Another common starting test for drinking water is nitrates. A value higher than 10 ppm (mg/L) can threaten your health especially if you are pregnant or nursing, and can threaten the health of infants.  A presence of nitrates in your water indicates surface water contamination of your drinking water.                                                                

How do I collect a sample?

  • First, call a lab near you that is certified for the test you need for sample containers and procedures. For a list of certified labs, click here.
  • Use the appropriate container for the type of sample.
  • Store the sample carefully according to the instructions before taking it to the lab.
  • If you receive a container from the lab for a bacterial test, do not rinse it out. It has been sterilized and contains a preservative.
  • Some samples must be kept cool and delivered to the lab within a short period of time (often less than 24 hours) or they will not be analyzed.

    A poorly collected sample wastes your money and is worse than no sample at all. 

Where do I get the water analyzed?

  • Get your well water tested for FREE at the Utah State Department of Agriculture and Food.
  • Check the list of certified labs for a lab near you. These labs will all accept water samples from you.
  • Check with the lab before you do the test to make sure you have all the necessary information and the proper collection methods. Send in your sample according to the lab's directions.  

How do I interprete the results?  What do they mean?

  • Find out what the results mean using USU's online interpretation tool.
  • Compare your results to the Utah drinking water standards.
  • Look at the EPA's ground water and drinking water web page for more information.
  • If any values exceed the standards, DO NOT DRINK THE WATER!
  • Re-test if bacteria, nitrate or organic parameters exceed the standards.
  • If concentrations are increasing between sampling, try to determine and mitigate the sources of pollutants. 

 Additional information on specific drinking water pollutants: