Maryland Streams – Teaching Resources
(2) Chemical Water Quality Testing
Analyzing water chemistry provides information on water quality at the time of sampling. Repeated testing of the same site at different times of year and over many years can reveal trends in the stream’s health. Trends noted over time can be useful in monitoring the stream, understanding its pollution sources and how to repair them.
- Chesapeake Bay FieldScope – National Geographic Society’s web-based mapping, analysis, and collaboration tool. This is where you will upload stream data collected by students, and where you can find additional data to use in the classroom. See the specific lessons and data sheet provided under Biological Assessment – these include chemical testing as well.
- Investigating Water Quality - Chemical Water Sampling Tests from The Global Water Sampling Project – background information, testing procedures, and expected test result ranges for temperature, pH, dissolved oxygen, nitrates, phosphates, biological oxygen demand, carbon dioxide, turbidity, coliform bacteria, and macroinvertebrates.
- World Water Monitoring Challenge – Includes guides, lesson plans and data sheets from Project WET on water quality testing and monitoring. See the links provided under Biological Assessment – these include chemical testing as well.
- Montgomery County Public Schools Stream / Pond Study: Students investigate the local watershed and work in groups to assess the health of a nearby stream or pond using various indicators. Stream study lesson plan, data collection sheet (includes chemical and physical parameters), and macroinvertebrate identification key from Save Our Streams.
- Healthy Water, Healthy People: an innovative water quality education program from Projoect WET offering hands-on activities, an Educator’s Guide, testing kits, a field water monitoring guide, training, and more. MD Department of Natural Resources offers teacher workshops, and has aligned these materials to Maryland State Curriculum requirements.