Water science

Nutrients, pesticides, metals and other toxic substances, substances of emerging concern.

Services and information

Levels and trends over time of nutrients in selection ecosystems.

Levels and trends over time of pesticides in selection ecosystems.

Assessing the presence of various toxic substances and their levels in selected ecosystems.

Assessing the presence of emerging toxic substances and their levels in selected ecosystems.

Proficiency testing and reference material programs to help laboratories improve their performance.

Research and modeling to assess and predict the effects of stressors, including nutrients, on watershed hydrology, river and lake ecosystems.