For more about the TRWA’s water quality monitoring program see the water quality monitoring program page. Click on the links below to view PDFs with the actual data.
- 2021 Data
- 2020 Sampling Program Suspended Due to Pandemic
- 2019 Data
- 2018 Data
- Average 2016, 2017 and 2018 Monitoring Results for Nitrate and Phosphorus
- 2017 Data
- 2016 Data
- 2003 – 2019 Nitrate Results
- Data from past years is available upon request.