Water

Monitoring Water Quality

DEQ monitors chemical, physical, and biological properties of our state’s rivers, streams, lakes, and wetlands. High quality data is necessary to support decision-making. DEQ monitors water quality to:

  • Educate people about water quality;
  • Inform watershed restoration and protection plans;
  • Track trends in water quality;
  • Investigate water quality problems, threats, and improvements;
  • Assess whether waters meet water quality standards and support beneficial uses;
  • Evaluate sources of pollution;
  • Support studies that determine total maximum daily load (TMDL) development;
  • Establish baseline conditions;
  • Develop water quality standards.