Students and their teachers monitor water quality in their local streams or river twice annually, once in October and once in February. They use kits to test for dissolved oxygen, pH, nitrates and turbidity. Students measure both the air and water temperature and many classes collect sterile samples for bacterial analysis. Students at local high school filter these samples, incubate them and count the fecal coliform colonies after 24 hours. These water quality parameters are important for aquatic organisms and/or have implications for human health.
New to GREEN? Want to see what it’s all about? Check out this video by local filmmaker Kathy Strauss!
Resources for chemical water quality monitoring are listed below. Click here for more information on biological water quality monitoring using benthic macroinvertebrates (stream bugs).
NEW! Our Water Quality Manual has been updated and streamlined for the 2019-2020 school year. Inside you will find a bit of history for each water quality testing program, some background information about each of the tests, updated instruction and data sheets, and additional activities to assist you on monitoring day!
NEW! WQ Presentation- SS GREEN Watersheds: This slide show highlights South Sound GREEN’s watersheds, how water is affected by point and non-point source pollution, and some details about the specific parameters we use to measure water quality.
Water Quality Monitoring Videos
Click on any of the links below for video instructions for each of the following tests:
Optimal Water Quality Standards
Click here to download a document about the Optimal Water Quality Standards students keep in mind when collecting data at their adopted sites.
Water Quality Data
Students in the South Sound GREEN program have collected data on South Sound streams since the mid-1990’s. Please see below for current and past data: