Water Monitoring
- Drinking Water Watch Characteristics of each Illinois water supply facility, including the source (e.g., ground water or surface water) used. You can browse all facilities by county or search for specific facilities. The Glossary link on the left side of the database screen defines codes used in database records. Maintained by the Illinois Environmental Protection Agency.
- Drinking Water Branch - interactive map Access the Drinking Water Watch data via a clickable map of the Illinois counties, from the Illinois Environmental Protection Agency
- Source Water Assessment Program (SWAP) Fact Sheets Source Water Assessment Program Factsheets describe water sources for community and non-community water supplies, including susceptibility to contamination, and documentation/recommendation of source water protection efforts. Browse by county or search by keyword in the facility name.
- Water Quality Portal Data Sites in Illinois
Interactive map of sites in the state; use the map to find links to monitoring data for each station, or browse the list of sites by name. - Illinois' Statewide Monitoring Well Network for Pesticides in Shallow Groundwater: Network Development and Initial Sampling ResultsIllinois State Water Survey and Illinois State Geological Survey Cooperative Resources Report no. 20 published in 2005. Describes a network for monitoring pesticides in groundwater.
- University of Illinois Water Quality ReportsCampus Facilities and Services reports on the quality of campus drinking water supplies are issued annually by University of Illinois at Urbana-Champaign Facilities and Services.
Water Testing
- Well Sampling for Coliform and Nitrate Fact SheetIllinois Department of Public Health
- Illinois Public Health Departments (map)Contact your regional or local department for assistance with well testing, including test kits and lists of accredited laboratories.
- Understanding Your Water Quality AnalysisA guide for private well owners published in 2014 by the Illinois State Water Survey. ISWS Circular no. 185.