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Water Monitoring Testing

What Does Temperature Have to do with Water Quality?

Temperature is very important to water quality. Temperature affects the amount of dissolved oxygen in the water, the rate of photosynthesis by aquatic plants and the sensitivity of organisms to toxic wastes, parasites and disease. Thermal pollution (e.g., the discharge of heated water from industrial operations) can cause temperature changes that threaten the balance of aquatic systems.

Good temperatures are dependent on the type of stream you are monitoring. Lowland streams, known as "warm-water" streams, are different from mountain or spring fed streams that are normally cool. In a warm-water stream temperatures should not exceed 89° Fahrenheit (about 31.7° Celsius). Cold water streams should not exceed 68° Fahrenheit (about 20° Celsius).

Water Temperature Test

What You'll Need:

  • Sample container with your collected water sample.
  • Protective gloves.
  • Thermometer from your test kit.
Use of the thermometer: The temperature is indicated by a liquid crystal number on the Low Range thermometer and a green display on the High Range thermometer, as shown in the diagram below.
Thermometer from test kit

Temperature Test Procedure:

  1. Take the adhesive back off the thermometer and stick them to something that will make them easier for you to grasp.
  2. Wear protective gloves. Then, place the thermometer four inches below the water surface of your sample for one minute.
  3. Remove the thermometer from your sample, read the temperature and record it on your field data sheet as degrees Celsius.

Next Test - Dissolved Oxygen »


This full-featured set of instructions took an extremely technical and difficult-to-understand set of instructions and broke them down into layman terms that school teachers were able to understand. As a result two foreign schools in Uzbekistan and Warsaw, Poland were able to participate in the World Water Monitoring Day event. These instructions also served as the replacement for the on-site training that some of the local teachers missed.

If you need help writing or editing instruction content, contact me today. I'm also really good at testing the accuracy of procedures. I will actually go through the process of whatever the instructions cover and ask questions if I come across something unclear or inaccurate. Then, I rewrite what's unclear or inaccurate. I also include applicable computer screen shots for software instructions and other illustrations to help the user better understand the task they are performing.