Water Quality Program

Image of water taken under the water with a close-up of air bubbles rasing to the surface

Surface Water Monitoring and Assessments

Surface Water Monitoring and Assessments program fulfills Clean Water Act requirements for water quality monitoring and assessments. Specific activities include providing critical information on water quality conditions and establishing water quality standards. ADEQ staff collects water quality data on streams, lakes and groundwater throughout the state. The data collected are used to support the state’s biennial water quality assessment report. 

Arizonas Integrated 305(b) Assessment and 303(d) Listing Report describes the status of surface water in Arizona in relation to state water quality standards. The report contains a 303(d) list of Arizonas impaired surface waters requiring the development of a Total Maximum Daily Load (TMDL) and fulfills requirements of the federal Clean Water Act sections 305(b) (assessments), 303(d) (impaired water identification) and 314 (status of lake water quality).

2012/14 Status of Water Quality in Arizona 305(b) Assessment Report | View Report > 

Draft for 2016 Status of  Water Quality in Arizona 305(b) Assessment Report | View Draft Report >