Water Quality
Ground-water and surface-water quality is one of the most critical concerns in the State of Oklahoma. The major water-quality issue in Oklahoma is preserving the quality of public drinking-water supply. Water-resource planning and water-quality assessment require a nationwide database with standardized information for planning and assessment of water resources. Thus, the chemical and physical quality of rivers, streams, and ground water need to be monitored and defined to effectively manage the resource to meet needs of the people of Oklahoma and our present and future customers.
Oklahoma Water-Quality Data
Current Conditions | Historical Data | Site Inventory
Oklahoma Water-Quality Statistics
Daily | Monthly | Annual
Information Resources
USGS Office of Water-Quality
National Water Quality Assessment Program (NAWQA)
Toxic Substances Hydrology Program (Toxics)
NAWQA Summary Reports
Selected USGS Water-Quality Publications