UPDATE: Ecology's new website will be live on Monday morning! Our official web address will be https://ecology.wa.gov

Marine Water photo

Marine Water Quality Monitoring

Monitoring Strategy and Activities

Our data are used:
  1. Major source of data for the 303(d) assessment that leads to TMDLs.
  2. Data used for TMDL model calibration that supports resulting implementation plans/permits.
  3. Site-specific data used to model and establish permit mixing zone limits.
  4. Long term status and trends data used to determine if water quality conditions are changing and determine the impact of natural influencing factors (climate, ocean) on water quality year to year variability.

Read our strategy, see what we measure and learn about our involvement with other monitoring partners. For detailed information go here. Can't see the embedded pdf file? Download here.